#2 Re: 全志 SOC » linux5.2内核，配置SPI屏幕（ili9341）步骤 » 2021-04-30 07:29:36
zzm24 说：
记得spi FIFO只有64字节,楼主可以在刷屏时cat /proc/interrupts看看spi的中断次数不?
看看刷屏中断会不会太频繁了
你看下
# cat /proc/interrupts
CPU0
19: 7542 GIC-0 27 Level arch_timer
21: 0 GIC-0 50 Level timer@1c20c00
22: 0 GIC-0 82 Level 1c02000.dma-controller
23: 27439 GIC-0 92 Level sunxi-mmc
24: 0 GIC-0 103 Level musb-hdrc.1.auto
25: 0 GIC-0 104 Level ehci_hcd:usb1
26: 2 GIC-0 105 Level ohci_hcd:usb2
27: 0 GIC-0 72 Level 1c20400.rtc
29: 1021 GIC-0 116 Level sun6i-csi
34: 392 GIC-0 32 Level ttyS0
35: 1724 GIC-0 39 Level mv64xxx_i2c
36: 4082175 GIC-0 97 Level sun6i-spi
IPI0: 0 CPU wakeup interrupts
IPI1: 0 Timer broadcast interrupts
IPI2: 0 Rescheduling interrupts
IPI3: 0 Function call interrupts
IPI4: 0 CPU stop interrupts
IPI5: 0 IRQ work interrupts
IPI6: 0 completion interrupts
Err: 0#3 Re: NXP i.MX6UL/6ULL » [正点原子i.MX6UL] v4l2+framebuffer预览USB摄像头(三)：实时预览 » 2021-04-30 07:22:23
无痕 说：
大佬，根据你的代码（没有动过）在荔枝派上运行，运行报下面的错误
https://whycan.com/files/members/5938/Image.png另外一个很奇怪的是，我用ffmpeg命令录制视频时并不会报VIDIOC_STREAMON错误。只要用ffmpeg的API和V4L2的API编写程序就会报这样的错误。
请问大佬知道啥原因吗？
摄像头不支持V4L2_PIX_FMT_YUYV格式，换成其它格式支持的格式就可以了
#4 Re: 全志 SOC » linux5.2内核，配置SPI屏幕（ili9341）步骤 » 2021-04-29 17:21:44
zzm24 说：
记得spi FIFO只有64字节,楼主可以在刷屏时cat /proc/interrupts看看spi的中断次数不?
看看刷屏中断会不会太频繁了
可以呀，但是我现在只是把屏幕配置好。我是打算把摄像头获取到的图像显示在屏幕上的，但是使用的时候遇到了问题。问题发在下面的帖子上。
https://whycan.com/t_3909.html
或者你告诉怎么刷屏
#6 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-28 23:35:49
我也是个小菜鸡#8 全志 SOC » linux5.2内核，配置SPI屏幕（ili9341）步骤 » 2021-04-28 21:47:32
- 无痕
- 回复： 18
内核版本：linux5.2
参考文章：
https://whycan.com/t_576.html#p1579
https://blog.csdn.net/qulang000/article/details/114686525
我在配置此屏幕时遇到问题发的帖子
https://whycan.com/t_6393.html
感谢大佬们的热心指导！
-----------------------------------------------------------------------------------------------------------------------------
1、配置内核驱动
Device Drivers --->
[ * ] Staging drivers --->
<*> Support for small TFT LCD display modules --->
<*> FB driver for the ILI9341 LCD Controller
<*> Generic FB driver for TFT LCD displays
2、在sun8i-v3s-licheepi-zero.dts添加设备树节点。注意，reset、dc引脚可以自由选择，只要不跟其它驱动冲突即可。
&i2c0 {
112 status = "disable";
113
114 ns2009: ns2009@48 {
115 compatible = "nsiway,ns2009";
116 reg = <0x48>;
117 };
118 };
183 &spi0 {
184 status = "okay";
185 spi_lcd@0 {
186 #address-cells = <1>;
187 #size-cells = <1>;
188 rotate = <90>;
189 fps = <30>;
190 buswidth = <8>;
191 bgr;
192 dc-gpios = <&pio 1 5 GPIO_ACTIVE_HIGH>;
193 reset-gpios = <&pio 1 7 GPIO_ACTIVE_LOW>;
194 debug = <0x0>;
195 compatible = "ilitek,ili9341";
196 reg = <0>;
197 spi-max-frequency = <48000000>;
198 };
199 };3、修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_request_one_gpio函数
注意需要在该文件上引入下面头文件，否则编译报错。
#include <linux/of_gpio.h>
static int fbtft_request_one_gpio(struct fbtft_par *par,
76 const char *name, int index,
77 struct gpio_desc **gpiop)
78 {
79 /*
80 struct device *dev = par->info->device;
81 struct device_node *node = dev->of_node;
82 int ret = 0;
83
84 if (of_find_property(node, name, NULL)) {
85 *gpiop = devm_gpiod_get_index(dev, dev->driver->name, index,
86 GPIOD_OUT_HIGH);
87 if (IS_ERR(*gpiop)) {
88 ret = PTR_ERR(*gpiop);
89 dev_err(dev,
90 "Failed to request %s GPIO:%d\n", name, ret);
91 return ret;
92 }
93 fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' GPIO\n",
94 __func__, name);
95 }
96
97 return ret;
98 */
100 struct device *dev = par->info->device;
101 struct device_node *node = dev->of_node;
102 int gpio, flags, ret = 0;
103 enum of_gpio_flags of_flags;
104 char gpio_names[32];
105
106 //sprintf(gpio_names, "%s-gpios", name);
107 sprintf(gpio_names, "%s", name);
108 printk("@ gpio_names = %s\n", gpio_names);
109 if (of_find_property(node, gpio_names, NULL)) {
110 gpio = of_get_named_gpio_flags(node, gpio_names, index, &of_flags);
111 printk ("@ gpio = %d | ENOENT = %d | EPROBE_DEFER = %d \n", gpio, ENOENT, EPROBE_DEFER);
112 if (gpio == -ENOENT)
113 return 0;
114 if (gpio == -EPROBE_DEFER)
115 return gpio;
116 if (gpio < 0) {
117 dev_err(dev,
118 "failed to get '%s' from DT\n", gpio_names);
119 return gpio;
120 }
121
122 //active low translates to initially low
123 flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
124 GPIOF_OUT_INIT_HIGH;
125 ret = devm_gpio_request_one(dev, gpio, flags,
126 dev->driver->name);
127 if (ret) {
128 dev_err(dev,
129 "gpio_request_one('%s'=%d) failed with %d\n",
130 gpio_names, gpio, ret);
131 return ret;
132 }
133
134 *gpiop = gpio_to_desc(gpio);
135 fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n",
136 __func__, gpio_names, gpio);
137 }
138 return ret;
139 }4、修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_reset函数
278 static void fbtft_reset(struct fbtft_par *par)
279 {
280 /*
281 if (!par->gpio.reset)
282 return;
283 fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
284 gpiod_set_value_cansleep(par->gpio.reset, 0);
285 usleep_range(20, 40);
286 gpiod_set_value_cansleep(par->gpio.reset, 1);
287 msleep(120);
288 */
289
290
291 if (!par->gpio.reset)
292 return;
293 fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
294 gpiod_set_value_cansleep(par->gpio.reset, 1);
295 usleep_range(20, 40);
296 gpiod_set_value_cansleep(par->gpio.reset, 0);
297 msleep(120);
298 gpiod_set_value_cansleep(par->gpio.reset, 1);
299 msleep(10);
300
301 }5、修改修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_request_gpios_dt函数里面，reset和dc引脚名称，从reset-gpios 和 dc-gpios 改为reset 和dc。
141 static int fbtft_request_gpios_dt(struct fbtft_par *par)
142 {
143 int i;
144 int ret;
145
146 if (!par->info->device->of_node)
147 return -EINVAL;
148
149
150 ret = fbtft_request_one_gpio(par, "reset", 0, &par->gpio.reset);
151 if (ret)
152 return ret;
153
154 ret = fbtft_request_one_gpio(par, "dc", 0, &par->gpio.dc);
155 if (ret)
156 return ret;
157
158 ret = fbtft_request_one_gpio(par, "rd-gpios", 0, &par->gpio.rd);
159 if (ret)
160 return ret;
161 ret = fbtft_request_one_gpio(par, "wr-gpios", 0, &par->gpio.wr);
162 if (ret)
163 return ret;
164 ret = fbtft_request_one_gpio(par, "cs-gpios", 0, &par->gpio.cs);
165 if (ret)
166 return ret;
167 ret = fbtft_request_one_gpio(par, "latch-gpios", 0, &par->gpio.latch);
168 if (ret)
169 return ret;
170 for (i = 0; i < 16; i++) {
171 ret = fbtft_request_one_gpio(par, "db-gpios", i,
172 &par->gpio.db[i]);
173 if (ret)
174 return ret;
175 ret = fbtft_request_one_gpio(par, "led-gpios", i,
176 &par->gpio.led[i]);
177 if (ret)
178 return ret;
179 ret = fbtft_request_one_gpio(par, "aux-gpios", i,
180 &par->gpio.aux[i]);
181 if (ret)
182 return ret;
183 }6、修改drivers/staging/fbtft/fbtft-bus.c 中的fbtft_write_vmem16_bus8函数，直接替换
int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
{
u16 *vmem16;
__be16 *txbuf16 = par->txbuf.buf;
size_t remain;
size_t to_copy;
size_t tx_array_size;
int i;
int ret = 0;
size_t startbyte_size = 0;
fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
__func__, offset, len);
remain = len / 2;
vmem16 = (u16 *)(par->info->screen_buffer + offset);
if (par->gpio.dc)
{
//printk("dc拉高！\n");
gpiod_set_value(par->gpio.dc, 1);
}
/* non buffered write */
if (!par->txbuf.buf)
return par->fbtftops.write(par, vmem16, len);
/* buffered write */
tx_array_size = par->txbuf.len / 2;
if (par->startbyte) {
txbuf16 = par->txbuf.buf + 1;
tx_array_size -= 2;
*(u8 *)(par->txbuf.buf) = par->startbyte | 0x2;
startbyte_size = 1;
}
while (remain) {
to_copy = min(tx_array_size, remain);
dev_dbg(par->info->device, "to_copy=%zu, remain=%zu\n",
to_copy, remain - to_copy);
for (i = 0; i < to_copy; i++)
txbuf16[i] = cpu_to_be16(vmem16[i]);
vmem16 = vmem16 + to_copy;
ret = par->fbtftops.write(par, par->txbuf.buf,
startbyte_size + to_copy * 2);
if (ret < 0)
return ret;
remain -= to_copy;
}
return ret;
}最后编译运行即可，启动log中会出现下面提示
[ 1.165809] fbtft_of_value: buswidth = 8
[ 1.169779] fbtft_of_value: debug = 0
[ 1.173438] fbtft_of_value: rotate = 90
[ 1.177267] fbtft_of_value: fps = 30
[ 1.215817] mmc0: host does not support reading read-only switch, assuming write-enable
[ 1.225921] mmc0: new high speed SDHC card at address 1234
[ 1.233279] mmcblk0: mmc0:1234 SA08G 7.21 GiB
[ 1.239976] mmcblk0: p1 p2
[ 1.475892] random: fast init done
[ 1.510864] Console: switching to colour frame buffer device 40x30
[ 1.517762] graphics fb0: fb_ili9341 frame buffer, 320x240, 150 KiB video memory, 16 KiB buffer memory, fps=33, spi0.0 at 48 MHz#9 全志 SOC » linux5.2内核，配置SPI屏幕（ili9341）步骤 » 2021-04-28 21:47:30
- 无痕
- 回复： 0
内核版本：linux5.2
参考文章：
https://whycan.com/t_576.html#p1579
https://blog.csdn.net/qulang000/article/details/114686525
我在配置此屏幕时遇到问题发的帖子
https://whycan.com/t_6393.html
感谢大佬们的热心指导！
-----------------------------------------------------------------------------------------------------------------------------
1、配置内核驱动
Device Drivers --->
[ * ] Staging drivers --->
<*> Support for small TFT LCD display modules --->
<*> FB driver for the ILI9341 LCD Controller
<*> Generic FB driver for TFT LCD displays
2、在sun8i-v3s-licheepi-zero.dts添加设备树节点。注意，reset、dc引脚可以自由选择，只要不跟其它驱动冲突即可。
&i2c0 {
112 status = "disable";
113
114 ns2009: ns2009@48 {
115 compatible = "nsiway,ns2009";
116 reg = <0x48>;
117 };
118 };
183 &spi0 {
184 status = "okay";
185 spi_lcd@0 {
186 #address-cells = <1>;
187 #size-cells = <1>;
188 rotate = <90>;
189 fps = <30>;
190 buswidth = <8>;
191 bgr;
192 dc-gpios = <&pio 1 5 GPIO_ACTIVE_HIGH>;
193 reset-gpios = <&pio 1 7 GPIO_ACTIVE_LOW>;
194 debug = <0x0>;
195 compatible = "ilitek,ili9341";
196 reg = <0>;
197 spi-max-frequency = <48000000>;
198 };
199 };3、修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_request_one_gpio函数
注意需要在该文件上引入下面头文件，否则编译报错。
#include <linux/of_gpio.h>
static int fbtft_request_one_gpio(struct fbtft_par *par,
76 const char *name, int index,
77 struct gpio_desc **gpiop)
78 {
79 /*
80 struct device *dev = par->info->device;
81 struct device_node *node = dev->of_node;
82 int ret = 0;
83
84 if (of_find_property(node, name, NULL)) {
85 *gpiop = devm_gpiod_get_index(dev, dev->driver->name, index,
86 GPIOD_OUT_HIGH);
87 if (IS_ERR(*gpiop)) {
88 ret = PTR_ERR(*gpiop);
89 dev_err(dev,
90 "Failed to request %s GPIO:%d\n", name, ret);
91 return ret;
92 }
93 fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' GPIO\n",
94 __func__, name);
95 }
96
97 return ret;
98 */
100 struct device *dev = par->info->device;
101 struct device_node *node = dev->of_node;
102 int gpio, flags, ret = 0;
103 enum of_gpio_flags of_flags;
104 char gpio_names[32];
105
106 //sprintf(gpio_names, "%s-gpios", name);
107 sprintf(gpio_names, "%s", name);
108 printk("@ gpio_names = %s\n", gpio_names);
109 if (of_find_property(node, gpio_names, NULL)) {
110 gpio = of_get_named_gpio_flags(node, gpio_names, index, &of_flags);
111 printk ("@ gpio = %d | ENOENT = %d | EPROBE_DEFER = %d \n", gpio, ENOENT, EPROBE_DEFER);
112 if (gpio == -ENOENT)
113 return 0;
114 if (gpio == -EPROBE_DEFER)
115 return gpio;
116 if (gpio < 0) {
117 dev_err(dev,
118 "failed to get '%s' from DT\n", gpio_names);
119 return gpio;
120 }
121
122 //active low translates to initially low
123 flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
124 GPIOF_OUT_INIT_HIGH;
125 ret = devm_gpio_request_one(dev, gpio, flags,
126 dev->driver->name);
127 if (ret) {
128 dev_err(dev,
129 "gpio_request_one('%s'=%d) failed with %d\n",
130 gpio_names, gpio, ret);
131 return ret;
132 }
133
134 *gpiop = gpio_to_desc(gpio);
135 fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n",
136 __func__, gpio_names, gpio);
137 }
138 return ret;
139 }4、修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_reset函数
278 static void fbtft_reset(struct fbtft_par *par)
279 {
280 /*
281 if (!par->gpio.reset)
282 return;
283 fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
284 gpiod_set_value_cansleep(par->gpio.reset, 0);
285 usleep_range(20, 40);
286 gpiod_set_value_cansleep(par->gpio.reset, 1);
287 msleep(120);
288 */
289
290
291 if (!par->gpio.reset)
292 return;
293 fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
294 gpiod_set_value_cansleep(par->gpio.reset, 1);
295 usleep_range(20, 40);
296 gpiod_set_value_cansleep(par->gpio.reset, 0);
297 msleep(120);
298 gpiod_set_value_cansleep(par->gpio.reset, 1);
299 msleep(10);
300
301 }5、修改修改drivers/staging/fbtft/fbtft-core.c文件中的fbtft_request_gpios_dt函数里面，reset和dc引脚名称，从reset-gpios 和 dc-gpios 改为reset 和dc。
141 static int fbtft_request_gpios_dt(struct fbtft_par *par)
142 {
143 int i;
144 int ret;
145
146 if (!par->info->device->of_node)
147 return -EINVAL;
148
149
150 ret = fbtft_request_one_gpio(par, "reset", 0, &par->gpio.reset);
151 if (ret)
152 return ret;
153
154 ret = fbtft_request_one_gpio(par, "dc", 0, &par->gpio.dc);
155 if (ret)
156 return ret;
157
158 ret = fbtft_request_one_gpio(par, "rd-gpios", 0, &par->gpio.rd);
159 if (ret)
160 return ret;
161 ret = fbtft_request_one_gpio(par, "wr-gpios", 0, &par->gpio.wr);
162 if (ret)
163 return ret;
164 ret = fbtft_request_one_gpio(par, "cs-gpios", 0, &par->gpio.cs);
165 if (ret)
166 return ret;
167 ret = fbtft_request_one_gpio(par, "latch-gpios", 0, &par->gpio.latch);
168 if (ret)
169 return ret;
170 for (i = 0; i < 16; i++) {
171 ret = fbtft_request_one_gpio(par, "db-gpios", i,
172 &par->gpio.db[i]);
173 if (ret)
174 return ret;
175 ret = fbtft_request_one_gpio(par, "led-gpios", i,
176 &par->gpio.led[i]);
177 if (ret)
178 return ret;
179 ret = fbtft_request_one_gpio(par, "aux-gpios", i,
180 &par->gpio.aux[i]);
181 if (ret)
182 return ret;
183 }6、修改drivers/staging/fbtft/fbtft-bus.c 中的fbtft_write_vmem16_bus8函数，直接替换
int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
{
u16 *vmem16;
__be16 *txbuf16 = par->txbuf.buf;
size_t remain;
size_t to_copy;
size_t tx_array_size;
int i;
int ret = 0;
size_t startbyte_size = 0;
fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
__func__, offset, len);
remain = len / 2;
vmem16 = (u16 *)(par->info->screen_buffer + offset);
if (par->gpio.dc)
{
//printk("dc拉高！\n");
gpiod_set_value(par->gpio.dc, 1);
}
/* non buffered write */
if (!par->txbuf.buf)
return par->fbtftops.write(par, vmem16, len);
/* buffered write */
tx_array_size = par->txbuf.len / 2;
if (par->startbyte) {
txbuf16 = par->txbuf.buf + 1;
tx_array_size -= 2;
*(u8 *)(par->txbuf.buf) = par->startbyte | 0x2;
startbyte_size = 1;
}
while (remain) {
to_copy = min(tx_array_size, remain);
dev_dbg(par->info->device, "to_copy=%zu, remain=%zu\n",
to_copy, remain - to_copy);
for (i = 0; i < to_copy; i++)
txbuf16[i] = cpu_to_be16(vmem16[i]);
vmem16 = vmem16 + to_copy;
ret = par->fbtftops.write(par, par->txbuf.buf,
startbyte_size + to_copy * 2);
if (ret < 0)
return ret;
remain -= to_copy;
}
return ret;
}最后编译运行即可，启动log中会出现下面提示
[ 1.165809] fbtft_of_value: buswidth = 8
[ 1.169779] fbtft_of_value: debug = 0
[ 1.173438] fbtft_of_value: rotate = 90
[ 1.177267] fbtft_of_value: fps = 30
[ 1.215817] mmc0: host does not support reading read-only switch, assuming write-enable
[ 1.225921] mmc0: new high speed SDHC card at address 1234
[ 1.233279] mmcblk0: mmc0:1234 SA08G 7.21 GiB
[ 1.239976] mmcblk0: p1 p2
[ 1.475892] random: fast init done
[ 1.510864] Console: switching to colour frame buffer device 40x30
[ 1.517762] graphics fb0: fb_ili9341 frame buffer, 320x240, 150 KiB video memory, 16 KiB buffer memory, fps=33, spi0.0 at 48 MHz#10 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-28 21:10:45
昨天调试后报下面这个错误，根据楼上大佬说的是IO没有申请成功，让我在fbtft_request_one_gpio加打印函数看看，我照做了（一定要勤动手），结果真的发现问题。
[ 1.165851] fbtft_of_value: buswidth = 8
[ 1.169818] fbtft_of_value: debug = 0
[ 1.173478] fbtft_of_value: rotate = 270
[ 1.177395] fbtft_of_value: fps = 10
[ 1.181682] @ pdata->display.buswidth = 8
[ 1.185755] @ par->gpio.dc = 0
[ 1.188882] fb_ili9341 spi0.0: Missing info about 'dc' gpio. Aborting.fbtft_request_one_gpio加入打印函数后的代码,关键的打印函数在108行。
5 static int fbtft_request_one_gpio(struct fbtft_par *par,
76 const char *name, int index,
77 struct gpio_desc **gpiop)
78 {
79 /*
80 struct device *dev = par->info->device;
81 struct device_node *node = dev->of_node;
82 int ret = 0;
83
84 if (of_find_property(node, name, NULL)) {
85 *gpiop = devm_gpiod_get_index(dev, dev->driver->name, index,
86 GPIOD_OUT_HIGH);
87 if (IS_ERR(*gpiop)) {
88 ret = PTR_ERR(*gpiop);
89 dev_err(dev,
90 "Failed to request %s GPIO:%d\n", name, ret);
91 return ret;
92 }
93 fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' GPIO\n",
94 __func__, name);
95 }
96
97 return ret;
98 */
99
100 struct device *dev = par->info->device;
101 struct device_node *node = dev->of_node;
102 int gpio, flags, ret = 0;
103 enum of_gpio_flags of_flags;
104 char gpio_names[32];
106 sprintf(gpio_names, "%s-gpios", name);
108 printk("@ gpio_names = %s\n", gpio_names);
109 if (of_find_property(node, gpio_names, NULL)) {
110 gpio = of_get_named_gpio_flags(node, gpio_names, index, &of_flags);
111 printk ("@ gpio = %d | ENOENT = %d | EPROBE_DEFER = %d \n", gpio, ENOENT, EPROBE_DEFER);
112 if (gpio == -ENOENT)
113 return 0;
114 if (gpio == -EPROBE_DEFER)
115 return gpio;
116 if (gpio < 0) {
117 dev_err(dev,
118 "failed to get '%s' from DT\n", gpio_names);
119 return gpio;
120 }
121
122 //active low translates to initially low
123 flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
124 GPIOF_OUT_INIT_HIGH;
125 ret = devm_gpio_request_one(dev, gpio, flags,
126 dev->driver->name);
127 if (ret) {
128 dev_err(dev,
129 "gpio_request_one('%s'=%d) failed with %d\n",
130 gpio_names, gpio, ret);
131 return ret;
132 }
133
134 *gpiop = gpio_to_desc(gpio);
135 fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n",
136 __func__, gpio_names, gpio);
137 }
138 return ret;
139 }内核启动后输出的如下内容
[ 1.165851] fbtft_of_value: buswidth = 8
[ 1.169818] fbtft_of_value: debug = 0
[ 1.173480] fbtft_of_value: rotate = 90
[ 1.177309] fbtft_of_value: fps = 30
[ 1.181541] @ gpio_names = reset-gpios-gpios
[ 1.185883] @ gpio_names = dc-gpios-gpios
[ 1.189960] @ gpio_names = rd-gpios-gpios
[ 1.193969] @ gpio_names = wr-gpios-gpios
[ 1.197999] @ gpio_names = cs-gpios-gpios
[ 1.202004] @ gpio_names = latch-gpios-gpios
[ 1.206267] @ gpio_names = db-gpios-gpios
[ 1.210286] @ gpio_names = led-gpios-gpios
[ 1.214377] @ gpio_names = aux-gpios-gpios
[ 1.218478] @ gpio_names = db-gpios-gpios
[ 1.222481] @ gpio_names = led-gpios-gpios
[ 1.226570] @ gpio_names = aux-gpios-gpios
[ 1.230668] @ gpio_names = db-gpios-gpios
[ 1.234671] @ gpio_names = led-gpios-gpios
[ 1.238770] @ gpio_names = aux-gpios-gpios
[ 1.242859] @ gpio_names = db-gpios-gpios
[ 1.246861] @ gpio_names = led-gpios-gpios
[ 1.250961] @ gpio_names = aux-gpios-gpios
[ 1.255049] @ gpio_names = db-gpios-gpios
[ 1.259062] @ gpio_names = led-gpios-gpios
[ 1.263151] @ gpio_names = aux-gpios-gpios
[ 1.267239] @ gpio_names = db-gpios-gpios
[ 1.271251] @ gpio_names = led-gpios-gpios
[ 1.275340] @ gpio_names = aux-gpios-gpios
[ 1.279440] @ gpio_names = db-gpios-gpios
[ 1.283443] @ gpio_names = led-gpios-gpios
[ 1.287531] @ gpio_names = aux-gpios-gpios
[ 1.291630] @ gpio_names = db-gpios-gpios
[ 1.295632] @ gpio_names = led-gpios-gpios
[ 1.299731] @ gpio_names = aux-gpios-gpios
[ 1.303821] @ gpio_names = db-gpios-gpios
[ 1.307823] @ gpio_names = led-gpios-gpios
[ 1.311921] @ gpio_names = aux-gpios-gpios
[ 1.316010] @ gpio_names = db-gpios-gpios
[ 1.320022] @ gpio_names = led-gpios-gpios
[ 1.324111] @ gpio_names = aux-gpios-gpios
[ 1.328210] @ gpio_names = db-gpios-gpios
[ 1.332213] @ gpio_names = led-gpios-gpios
[ 1.336302] @ gpio_names = aux-gpios-gpios
[ 1.340400] @ gpio_names = db-gpios-gpios
[ 1.344403] @ gpio_names = led-gpios-gpios
[ 1.348502] @ gpio_names = aux-gpios-gpios
[ 1.352591] @ gpio_names = db-gpios-gpios
[ 1.356593] @ gpio_names = led-gpios-gpios
[ 1.360693] @ gpio_names = aux-gpios-gpios
[ 1.364781] @ gpio_names = db-gpios-gpios
[ 1.368794] @ gpio_names = led-gpios-gpios
[ 1.372884] @ gpio_names = aux-gpios-gpios
[ 1.376973] @ gpio_names = db-gpios-gpios
[ 1.380985] @ gpio_names = led-gpios-gpios
[ 1.385065] @ gpio_names = aux-gpios-gpios
[ 1.389165] @ gpio_names = db-gpios-gpios
[ 1.393167] @ gpio_names = led-gpios-gpios
[ 1.397255] @ gpio_names = aux-gpios-gpios
[ 1.401356] @ pdata->display.buswidth = 8
[ 1.405358] @ par->gpio.dc = 0
[ 1.408425] fb_ili9341 spi0.0: Missing info about 'dc' gpio. Aborting. @xkt
[ 1.415483] fb_ili9341: probe of spi0.0 failed with error -22我是输出设备树中IO口的名称，发现reset和dc引脚的名称为：reset-gpios-gpios dc-gpios-gpios。跟设备树上的节点名称不一样，所以真如楼上大佬说的，是引脚没有申请成功！所以只需要把驱动和设备树的引脚名称修改为一致就好了。有多种修改方法。
#11 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-28 21:01:49
心情复杂 说：
无痕 说：reset GPIO能申请到了，但是dc引脚又出问题了，报下面的错误。
[ 1.165851] fbtft_of_value: buswidth = 8 [ 1.169818] fbtft_of_value: debug = 0 [ 1.173478] fbtft_of_value: rotate = 270 [ 1.177395] fbtft_of_value: fps = 10 [ 1.181682] @ pdata->display.buswidth = 8 [ 1.185755] @ par->gpio.dc = 0 [ 1.188882] fb_ili9341 spi0.0: Missing info about 'dc' gpio. Aborting.追log追到这里，原因是par->gpio.dc = 0导致下面的if条件成立。这问题奇奇怪怪的。
1173 if (pdata->display.buswidth != 9 && par->startbyte == 0 && 1174 !par->gpio.dc) { 1175 printk ("@ pdata->display.buswidth = %d\n", pdata->display.buswidth); 1176 printk ("@ par->gpio.dc = %d\n", par->gpio.dc); 1177 dev_err(par->info->device, 1178 "Missing info about 'dc' gpio. Aborting.\n"); 1179 return -EINVAL; 1180 }另外我今晚跟着教程走，在4.17的内核中能够成功驱动手上的屏幕，所以屏幕是正常的。
注意屏幕上的LED引脚要接3.3V你这不明显是DC申请不到吗？ 可以在 fbtft_request_one_gpio 添加点打印函数 看看？
感谢大佬指点，按照你的指示，在fbtft_request_one_gpio加打印函数调试，发现问题，现在已经解决，屏幕已经点亮。
#12 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-28 15:38:55
心情复杂 说：
无痕 说：reset GPIO能申请到了，但是dc引脚又出问题了，报下面的错误。
[ 1.165851] fbtft_of_value: buswidth = 8 [ 1.169818] fbtft_of_value: debug = 0 [ 1.173478] fbtft_of_value: rotate = 270 [ 1.177395] fbtft_of_value: fps = 10 [ 1.181682] @ pdata->display.buswidth = 8 [ 1.185755] @ par->gpio.dc = 0 [ 1.188882] fb_ili9341 spi0.0: Missing info about 'dc' gpio. Aborting.追log追到这里，原因是par->gpio.dc = 0导致下面的if条件成立。这问题奇奇怪怪的。
1173 if (pdata->display.buswidth != 9 && par->startbyte == 0 && 1174 !par->gpio.dc) { 1175 printk ("@ pdata->display.buswidth = %d\n", pdata->display.buswidth); 1176 printk ("@ par->gpio.dc = %d\n", par->gpio.dc); 1177 dev_err(par->info->device, 1178 "Missing info about 'dc' gpio. Aborting.\n"); 1179 return -EINVAL; 1180 }另外我今晚跟着教程走，在4.17的内核中能够成功驱动手上的屏幕，所以屏幕是正常的。
注意屏幕上的LED引脚要接3.3V你这不明显是DC申请不到吗？ 可以在 fbtft_request_one_gpio 添加点打印函数 看看？
如果dc申请不到的话，不应该是报类似下面的错误吗？
[ 1.181547] fb_ili9341 spi0.0: Failed to request reset-gpios GPIO:-2应该是报[ 1.181547] fb_ili9341 spi0.0: Failed to request dc-gpios GPIO:-2
我感觉不是dc申请不到哈。不过晚点，我会按照你说，把那个地方打印出来看看。
#13 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-28 00:17:40
reset GPIO能申请到了，但是dc引脚又出问题了，报下面的错误。
[ 1.165851] fbtft_of_value: buswidth = 8
[ 1.169818] fbtft_of_value: debug = 0
[ 1.173478] fbtft_of_value: rotate = 270
[ 1.177395] fbtft_of_value: fps = 10
[ 1.181682] @ pdata->display.buswidth = 8
[ 1.185755] @ par->gpio.dc = 0
[ 1.188882] fb_ili9341 spi0.0: Missing info about 'dc' gpio. Aborting.追log追到这里，原因是par->gpio.dc = 0导致下面的if条件成立。这问题奇奇怪怪的。
1173 if (pdata->display.buswidth != 9 && par->startbyte == 0 &&
1174 !par->gpio.dc) {
1175 printk ("@ pdata->display.buswidth = %d\n", pdata->display.buswidth);
1176 printk ("@ par->gpio.dc = %d\n", par->gpio.dc);
1177 dev_err(par->info->device,
1178 "Missing info about 'dc' gpio. Aborting.\n");
1179 return -EINVAL;
1180 }另外我今晚跟着教程走，在4.17的内核中能够成功驱动手上的屏幕，所以屏幕是正常的。
注意屏幕上的LED引脚要接3.3V
#14 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-27 22:38:55
无痕 说：
心情复杂 说：我在5.7改了fbtft-core.c 的 fbtft_request_one_gpio fbtft_reset 函数 能用 你可以试试
static int fbtft_request_one_gpio(struct fbtft_par *par, const char *name, int index, struct gpio_desc **gpiop) { struct device *dev = par->info->device; struct device_node *node = dev->of_node; int gpio, flags, ret = 0; enum of_gpio_flags of_flags; char gpio_names[32]; sprintf(gpio_names, "%s-gpios", name); if (of_find_property(node, gpio_names, NULL)) { gpio = of_get_named_gpio_flags(node, gpio_names, index, &of_flags); if (gpio == -ENOENT) return 0; if (gpio == -EPROBE_DEFER) return gpio; if (gpio < 0) { dev_err(dev, "failed to get '%s' from DT\n", gpio_names); return gpio; } //active low translates to initially low flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH; ret = devm_gpio_request_one(dev, gpio, flags, dev->driver->name); if (ret) { dev_err(dev, "gpio_request_one('%s'=%d) failed with %d\n", gpio_names, gpio, ret); return ret; } *gpiop = gpio_to_desc(gpio); fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n", __func__, gpio_names, gpio); } return ret; } static void fbtft_reset(struct fbtft_par *par) { if (!par->gpio.reset) return; fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__); gpiod_set_value_cansleep(par->gpio.reset, 1); usleep_range(20, 40); gpiod_set_value_cansleep(par->gpio.reset, 0); msleep(120); gpiod_set_value_cansleep(par->gpio.reset, 1); msleep(10); }我按照你贴出来的代码修改后，编译内核的时候报下面的错误，我是不是需要在头文件那里添加什么呀？
CALL scripts/atomic/check-atomics.sh CALL scripts/checksyscalls.sh CHK include/generated/compile.h CC drivers/staging/fbtft/fbtft-core.o drivers/staging/fbtft/fbtft-core.c: In function ‘fbtft_request_one_gpio’: drivers/staging/fbtft/fbtft-core.c:102:24: error: storage size of ‘of_flags’ isn’t known enum of_gpio_flags of_flags; ^ drivers/staging/fbtft/fbtft-core.c:107:9: error: implicit declaration of function ‘of_get_named_gpio_flags’ [-Werror=implicit-function-declaration] gpio = of_get_named_gpio_flags(node, gpio_names, index, &of_flags); ^ drivers/staging/fbtft/fbtft-core.c:119:29: error: ‘OF_GPIO_ACTIVE_LOW’ undeclared (first use in this function) flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW : ^ drivers/staging/fbtft/fbtft-core.c:119:29: note: each undeclared identifier is reported only once for each function it appears in drivers/staging/fbtft/fbtft-core.c:119:51: error: ‘GPIOF_OUT_INIT_LOW’ undeclared (first use in this function) flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW : ^ drivers/staging/fbtft/fbtft-core.c:120:29: error: ‘GPIOF_OUT_INIT_HIGH’ undeclared (first use in this function) GPIOF_OUT_INIT_HIGH; ^ drivers/staging/fbtft/fbtft-core.c:121:9: error: implicit declaration of function ‘devm_gpio_request_one’ [-Werror=implicit-function-declaration] ret = devm_gpio_request_one(dev, gpio, flags, ^ drivers/staging/fbtft/fbtft-core.c:102:24: warning: unused variable ‘of_flags’ [-Wunused-variable] enum of_gpio_flags of_flags; ^ cc1: some warnings being treated as errors scripts/Makefile.build:278: recipe for target 'drivers/staging/fbtft/fbtft-core.o' failed make[3]: *** [drivers/staging/fbtft/fbtft-core.o] Error 1 scripts/Makefile.build:498: recipe for target 'drivers/staging/fbtft' failed make[2]: *** [drivers/staging/fbtft] Error 2 make[2]: *** Waiting for unfinished jobs.... scripts/Makefile.build:498: recipe for target 'drivers/staging' failed make[1]: *** [drivers/staging] Error 2 Makefile:1077: recipe for target 'drivers' failed make: *** [drivers] Error 2
在该文件添加下面这个头文件后，编译就不报错了
#include <linux/of_gpio.h>
#15 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-27 22:27:40
哇酷小二 说：
无痕 说：哇酷小二 说：没理由，只能怀疑你改错了文件，或者dtb没有起作用。
我百度了下那错误，找到这个帖子，但是我看不懂。晕哥可以看下它写的内容
https://blog.csdn.net/qulang000/article/details/114686525都按这个改了?如果也改了，把of获取reset gpio那一段屏蔽起来，看看能不能获取dc gpio.
屏蔽掉reset引脚后，就报dc-gpio没找到哈哈哈
[ 1.165822] fbtft_of_value: buswidth = 8
[ 1.169792] fbtft_of_value: debug = 0
[ 1.173452] fbtft_of_value: rotate = 270
[ 1.177369] fbtft_of_value: fps = 10
[ 1.181647] fb_ili9341 spi0.0: Failed to request dc-gpios GPIO:-2
[ 1.187902] fb_ili9341: probe of spi0.0 failed with error -2#16 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-27 22:17:10
心情复杂 说：
我在5.7改了fbtft-core.c 的 fbtft_request_one_gpio fbtft_reset 函数 能用 你可以试试
static int fbtft_request_one_gpio(struct fbtft_par *par, const char *name, int index, struct gpio_desc **gpiop) { struct device *dev = par->info->device; struct device_node *node = dev->of_node; int gpio, flags, ret = 0; enum of_gpio_flags of_flags; char gpio_names[32]; sprintf(gpio_names, "%s-gpios", name); if (of_find_property(node, gpio_names, NULL)) { gpio = of_get_named_gpio_flags(node, gpio_names, index, &of_flags); if (gpio == -ENOENT) return 0; if (gpio == -EPROBE_DEFER) return gpio; if (gpio < 0) { dev_err(dev, "failed to get '%s' from DT\n", gpio_names); return gpio; } //active low translates to initially low flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH; ret = devm_gpio_request_one(dev, gpio, flags, dev->driver->name); if (ret) { dev_err(dev, "gpio_request_one('%s'=%d) failed with %d\n", gpio_names, gpio, ret); return ret; } *gpiop = gpio_to_desc(gpio); fbtft_par_dbg(DEBUG_REQUEST_GPIOS, par, "%s: '%s' = GPIO%d\n", __func__, gpio_names, gpio); } return ret; } static void fbtft_reset(struct fbtft_par *par) { if (!par->gpio.reset) return; fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__); gpiod_set_value_cansleep(par->gpio.reset, 1); usleep_range(20, 40); gpiod_set_value_cansleep(par->gpio.reset, 0); msleep(120); gpiod_set_value_cansleep(par->gpio.reset, 1); msleep(10); }
我按照你贴出来的代码修改后，编译内核的时候报下面的错误，我是不是需要在头文件那里添加什么呀？
CALL scripts/atomic/check-atomics.sh
CALL scripts/checksyscalls.sh
CHK include/generated/compile.h
CC drivers/staging/fbtft/fbtft-core.o
drivers/staging/fbtft/fbtft-core.c: In function ‘fbtft_request_one_gpio’:
drivers/staging/fbtft/fbtft-core.c:102:24: error: storage size of ‘of_flags’ isn’t known
enum of_gpio_flags of_flags;
^
drivers/staging/fbtft/fbtft-core.c:107:9: error: implicit declaration of function ‘of_get_named_gpio_flags’ [-Werror=implicit-function-declaration]
gpio = of_get_named_gpio_flags(node, gpio_names, index, &of_flags);
^
drivers/staging/fbtft/fbtft-core.c:119:29: error: ‘OF_GPIO_ACTIVE_LOW’ undeclared (first use in this function)
flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
^
drivers/staging/fbtft/fbtft-core.c:119:29: note: each undeclared identifier is reported only once for each function it appears in
drivers/staging/fbtft/fbtft-core.c:119:51: error: ‘GPIOF_OUT_INIT_LOW’ undeclared (first use in this function)
flags = (of_flags & OF_GPIO_ACTIVE_LOW) ? GPIOF_OUT_INIT_LOW :
^
drivers/staging/fbtft/fbtft-core.c:120:29: error: ‘GPIOF_OUT_INIT_HIGH’ undeclared (first use in this function)
GPIOF_OUT_INIT_HIGH;
^
drivers/staging/fbtft/fbtft-core.c:121:9: error: implicit declaration of function ‘devm_gpio_request_one’ [-Werror=implicit-function-declaration]
ret = devm_gpio_request_one(dev, gpio, flags,
^
drivers/staging/fbtft/fbtft-core.c:102:24: warning: unused variable ‘of_flags’ [-Wunused-variable]
enum of_gpio_flags of_flags;
^
cc1: some warnings being treated as errors
scripts/Makefile.build:278: recipe for target 'drivers/staging/fbtft/fbtft-core.o' failed
make[3]: *** [drivers/staging/fbtft/fbtft-core.o] Error 1
scripts/Makefile.build:498: recipe for target 'drivers/staging/fbtft' failed
make[2]: *** [drivers/staging/fbtft] Error 2
make[2]: *** Waiting for unfinished jobs....
scripts/Makefile.build:498: recipe for target 'drivers/staging' failed
make[1]: *** [drivers/staging] Error 2
Makefile:1077: recipe for target 'drivers' failed
make: *** [drivers] Error 2#17 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-26 23:23:20
阿黄 说：
&i2c0 {
status = "disable";
ns2009: ns2009@48 {
compatible = "nsiway,ns2009";
reg = <0x48>;
};
};
改了之后还是报下面的错误
[ 1.165724] fbtft_of_value: buswidth = 8
[ 1.169696] fbtft_of_value: debug = 0
[ 1.173355] fbtft_of_value: rotate = 270
[ 1.177272] fbtft_of_value: fps = 10
[ 1.181547] fb_ili9341 spi0.0: Failed to request reset-gpios GPIO:-2
[ 1.188150] fb_ili9341: probe of spi0.0 failed with error -2#18 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-25 20:55:39
阿黄 说：
贴出你相关的几个完整设备树文件吧
完整的设备树文件如下
sun8i-v3s.dtsi
/*
* Copyright (C) 2016 Icenowy Zheng <icenowy@aosc.xyz>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/sun8i-v3s-ccu.h>
#include <dt-bindings/reset/sun8i-v3s-ccu.h>
/ {
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&gic>;
chosen {
#address-cells = <1>;
#size-cells = <1>;
ranges;
//simplefb_lcd: framebuffer@0 {
// compatible = "allwinner,simple-framebuffer",
// "simple-framebuffer";
// allwinner,pipeline = "de0-lcd0";
// clocks = <&ccu CLK_BUS_TCON0>, <&display_clocks 0>,
// <&display_clocks 6>, <&ccu CLK_TCON0>;
// status = "disabled";
//};
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
compatible = "arm,cortex-a7";
device_type = "cpu";
reg = <0>;
clocks = <&ccu CLK_CPU>;
};
};
de: display-engine {
compatible = "allwinner,sun8i-v3s-display-engine";
allwinner,pipelines = <&mixer0>;
status = "disabled";
};
timer {
compatible = "arm,armv7-timer";
interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
};
clocks {
#address-cells = <1>;
#size-cells = <1>;
ranges;
osc24M: osc24M_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <24000000>;
clock-output-names = "osc24M";
};
osc32k: osc32k_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <32768>;
clock-output-names = "osc32k";
};
};
soc {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges;
display_clocks: clock@1000000 {
compatible = "allwinner,sun8i-v3s-de2-clk";
reg = <0x01000000 0x100000>;
clocks = <&ccu CLK_DE>,
<&ccu CLK_BUS_DE>;
clock-names = "mod",
"bus";
resets = <&ccu RST_BUS_DE>;
#clock-cells = <1>;
#reset-cells = <1>;
};
mixer0: mixer@1100000 {
compatible = "allwinner,sun8i-v3s-de2-mixer";
reg = <0x01100000 0x100000>;
clocks = <&display_clocks 0>,
<&display_clocks 6>;
clock-names = "bus",
"mod";
resets = <&display_clocks 0>;
assigned-clocks = <&display_clocks 6>;
assigned-clock-rates = <150000000>;
ports {
#address-cells = <1>;
#size-cells = <0>;
mixer0_out: port@1 {
reg = <1>;
mixer0_out_tcon0: endpoint {
remote-endpoint = <&tcon0_in_mixer0>;
};
};
};
};
syscon: syscon@1c00000 {
compatible = "allwinner,sun8i-v3s-system-controller",
"syscon";
reg = <0x01c00000 0x1000>;
};
tcon0: lcd-controller@1c0c000 {
compatible = "allwinner,sun8i-v3s-tcon";
reg = <0x01c0c000 0x1000>;
interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_TCON0>,
<&ccu CLK_TCON0>;
clock-names = "ahb",
"tcon-ch0";
clock-output-names = "tcon-pixel-clock";
#clock-cells = <0>;
resets = <&ccu RST_BUS_TCON0>;
reset-names = "lcd";
status = "disabled";
ports {
#address-cells = <1>;
#size-cells = <0>;
tcon0_in: port@0 {
reg = <0>;
tcon0_in_mixer0: endpoint {
remote-endpoint = <&mixer0_out_tcon0>;
};
};
tcon0_out: port@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
};
};
};
dma: dma-controller@01c02000 {
compatible = "allwinner,sun8i-v3s-dma";
reg = <0x01c02000 0x1000>;
interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_DMA>;
resets = <&ccu RST_BUS_DMA>;
#dma-cells = <1>;
};
mmc0: mmc@1c0f000 {
compatible = "allwinner,sun7i-a20-mmc";
reg = <0x01c0f000 0x1000>;
clocks = <&ccu CLK_BUS_MMC0>,
<&ccu CLK_MMC0>,
<&ccu CLK_MMC0_OUTPUT>,
<&ccu CLK_MMC0_SAMPLE>;
clock-names = "ahb",
"mmc",
"output",
"sample";
resets = <&ccu RST_BUS_MMC0>;
reset-names = "ahb";
interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&mmc0_pins>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
mmc1: mmc@1c10000 {
compatible = "allwinner,sun7i-a20-mmc";
reg = <0x01c10000 0x1000>;
clocks = <&ccu CLK_BUS_MMC1>,
<&ccu CLK_MMC1>,
<&ccu CLK_MMC1_OUTPUT>,
<&ccu CLK_MMC1_SAMPLE>;
clock-names = "ahb",
"mmc",
"output",
"sample";
resets = <&ccu RST_BUS_MMC1>;
reset-names = "ahb";
interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&mmc1_pins>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
mmc2: mmc@1c11000 {
compatible = "allwinner,sun7i-a20-mmc";
reg = <0x01c11000 0x1000>;
clocks = <&ccu CLK_BUS_MMC2>,
<&ccu CLK_MMC2>,
<&ccu CLK_MMC2_OUTPUT>,
<&ccu CLK_MMC2_SAMPLE>;
clock-names = "ahb",
"mmc",
"output",
"sample";
resets = <&ccu RST_BUS_MMC2>;
reset-names = "ahb";
interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
usb_otg: usb@1c19000 {
compatible = "allwinner,sun8i-h3-musb";
reg = <0x01c19000 0x0400>;
clocks = <&ccu CLK_BUS_OTG>;
resets = <&ccu RST_BUS_OTG>;
interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "mc";
phys = <&usbphy 0>;
phy-names = "usb";
extcon = <&usbphy 0>;
status = "disabled";
};
usbphy: phy@1c19400 {
compatible = "allwinner,sun8i-v3s-usb-phy";
reg = <0x01c19400 0x2c>,
<0x01c1a800 0x4>;
reg-names = "phy_ctrl",
"pmu0";
clocks = <&ccu CLK_USB_PHY0>;
clock-names = "usb0_phy";
resets = <&ccu RST_USB_PHY0>;
reset-names = "usb0_reset";
status = "disabled";
#phy-cells = <1>;
};
ehci0: usb@01c1a000 {
compatible = "allwinner,sun8i-v3s-ehci", "generic-ehci";
reg = <0x01c1a000 0x100>;
interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_EHCI0>, <&ccu CLK_BUS_OHCI0>;
resets = <&ccu RST_BUS_EHCI0>, <&ccu RST_BUS_OHCI0>;
status = "disabled";
};
ohci0: usb@01c1a400 {
compatible = "allwinner,sun8i-v3s-ohci", "generic-ohci";
reg = <0x01c1a400 0x100>;
interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_EHCI0>, <&ccu CLK_BUS_OHCI0>,
<&ccu CLK_USB_OHCI0>;
resets = <&ccu RST_BUS_EHCI0>, <&ccu RST_BUS_OHCI0>;
status = "disabled";
};
ccu: clock@1c20000 {
compatible = "allwinner,sun8i-v3s-ccu";
reg = <0x01c20000 0x400>;
clocks = <&osc24M>, <&osc32k>;
clock-names = "hosc", "losc";
#clock-cells = <1>;
#reset-cells = <1>;
};
rtc: rtc@1c20400 {
compatible = "allwinner,sun6i-a31-rtc";
reg = <0x01c20400 0x54>;
interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
};
csi1: csi@1cb4000 {
compatible = "allwinner,sun8i-v3s-csi";
reg = <0x01cb4000 0x1000>;
interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_CSI>,
<&ccu CLK_CSI1_SCLK>,
<&ccu CLK_DRAM_CSI>;
clock-names = "bus", "mod", "ram";
resets = <&ccu RST_BUS_CSI>;
status = "disabled";
};
pio: pinctrl@1c20800 {
compatible = "allwinner,sun8i-v3s-pinctrl";
reg = <0x01c20800 0x400>;
interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_PIO>, <&osc24M>, <&osc32k>;
clock-names = "apb", "hosc", "losc";
gpio-controller;
#gpio-cells = <3>;
interrupt-controller;
#interrupt-cells = <3>;
emac_rgmii_pins: emac-rgmii-pins {
pins = "PD0", "PD1", "PD2", "PD3", "PD4",
"PD5", "PD7", "PD8", "PD9", "PD10",
"PD12", "PD13", "PD15", "PD16", "PD17";
function = "emac";
drive-strength = <40>;
};
i2c0_pins: i2c0-pins {
pins = "PB6", "PB7";
function = "i2c0";
};
pwm0_pins: pwm0 {
pins = "PB4";
function = "pwm0";
};
uart0_pb_pins: uart0-pb-pins {
pins = "PB8", "PB9";
function = "uart0";
};
lcd_rgb666_pins_a: lcd-rgb666-pe {
pins = "PE0", "PE1", "PE2", "PE3", "PE4", "PE5",
"PE6", "PE7", "PE8", "PE9", "PE10", "PE11",
"PE12", "PE13", "PE14", "PE15", "PE16", "PE17",
"PE18", "PE19", "PE23", "PE24";
function = "lcd";
};
mmc0_pins: mmc0-pins {
pins = "PF0", "PF1", "PF2", "PF3",
"PF4", "PF5";
function = "mmc0";
drive-strength = <30>;
bias-pull-up;
};
mmc1_pins: mmc1-pins {
pins = "PG0", "PG1", "PG2", "PG3",
"PG4", "PG5";
function = "mmc1";
drive-strength = <30>;
bias-pull-up;
};
spi0_pins: spi0-pins {
pins = "PC0", "PC1", "PC2", "PC3";
function = "spi0";
};
pwm1_pins: pwm1 {
pins = "PB5";
function = "pwm1";
};
csi1_8bit: csi1-8bit@0 {
pins = "PE6","PE7","PE8","PE9","PE10","PE11","PE12","PE13","PE14","PE15";
bias-disable;
function = "csi";
};
csi1_clk: csi1-clk@0 {
pins = "PE0","PE2","PE3";
bias-disable;
function = "csi";
};
csi1_mclk: csi1-mclk@0 {
pins = "PE1";
bias-disable;
function = "csi";
};
i2c1_pins: i2c1 {
pins = "PE21", "PE22";
function = "i2c1";
};
};
timer@1c20c00 {
compatible = "allwinner,sun4i-a10-timer";
reg = <0x01c20c00 0xa0>;
interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&osc24M>;
};
wdt0: watchdog@1c20ca0 {
compatible = "allwinner,sun6i-a31-wdt";
reg = <0x01c20ca0 0x20>;
interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
};
pwm: pwm@1c21400 {
compatible = "allwinner,sun8i-v3s-pwm",
"allwinner,sun7i-a20-pwm";
reg = <0x01c21400 0x400>;
clocks = <&osc24M>;
#pwm-cells = <3>;
status = "disabled";
};
lradc: lradc@1c22800 {
compatible = "allwinner,sun4i-a10-lradc-keys";
reg = <0x01c22800 0x400>;
interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
status = "disabled";
};
codec: codec@01c22c00 {
#sound-dai-cells = <0>;
compatible = "allwinner,sun8i-v3s-codec";
reg = <0x01c22c00 0x400>;
interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_CODEC>, <&ccu CLK_AC_DIG>;
clock-names = "apb", "codec";
resets = <&ccu RST_BUS_CODEC>;
dmas = <&dma 15>, <&dma 15>;
dma-names = "rx", "tx";
allwinner,codec-analog-controls = <&codec_analog>;
status = "disabled";
};
codec_analog: codec-analog@01c23000 {
compatible = "allwinner,sun8i-v3s-codec-analog";
reg = <0x01c23000 0x4>;
};
uart0: serial@1c28000 {
compatible = "snps,dw-apb-uart";
reg = <0x01c28000 0x400>;
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART0>;
resets = <&ccu RST_BUS_UART0>;
status = "disabled";
};
uart1: serial@1c28400 {
compatible = "snps,dw-apb-uart";
reg = <0x01c28400 0x400>;
interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART1>;
resets = <&ccu RST_BUS_UART1>;
status = "disabled";
};
uart2: serial@1c28800 {
compatible = "snps,dw-apb-uart";
reg = <0x01c28800 0x400>;
interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART2>;
resets = <&ccu RST_BUS_UART2>;
status = "disabled";
};
i2c0: i2c@1c2ac00 {
compatible = "allwinner,sun6i-a31-i2c";
reg = <0x01c2ac00 0x400>;
interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_I2C0>;
resets = <&ccu RST_BUS_I2C0>;
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c1: i2c@1c2b000 {
compatible = "allwinner,sun6i-a31-i2c";
reg = <0x01c2b000 0x400>;
interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_I2C1>;
resets = <&ccu RST_BUS_I2C1>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
emac: ethernet@1c30000 {
compatible = "allwinner,sun8i-h3-emac";
syscon = <&syscon>;
reg = <0x01c30000 0x10000>;
interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "macirq";
resets = <&ccu RST_BUS_EMAC>;
reset-names = "stmmaceth";
clocks = <&ccu CLK_BUS_EMAC>;
clock-names = "stmmaceth";
status = "disabled";
mdio: mdio {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dwmac-mdio";
};
mdio-mux {
compatible = "allwinner,sun8i-h3-mdio-mux";
#address-cells = <1>;
#size-cells = <0>;
mdio-parent-bus = <&mdio>;
/* Only one MDIO is usable at the time */
internal_mdio: mdio@1 {
compatible = "allwinner,sun8i-h3-mdio-internal";
reg = <1>;
#address-cells = <1>;
#size-cells = <0>;
int_mii_phy: ethernet-phy@1 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <1>;
clocks = <&ccu CLK_BUS_EPHY>;
resets = <&ccu RST_BUS_EPHY>;
};
};
external_mdio: mdio@2 {
reg = <2>;
#address-cells = <1>;
#size-cells = <0>;
};
};
};
spi0: spi@1c68000 {
compatible = "allwinner,sun8i-h3-spi";
reg = <0x01c68000 0x1000>;
interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_SPI0>, <&ccu CLK_SPI0>;
clock-names = "ahb", "mod";
pinctrl-names = "default";
pinctrl-0 = <&spi0_pins>;
resets = <&ccu RST_BUS_SPI0>;
status = "enabled";
#address-cells = <1>;
#size-cells = <0>;
};
gic: interrupt-controller@1c81000 {
compatible = "arm,gic-400";
reg = <0x01c81000 0x1000>,
<0x01c82000 0x1000>,
<0x01c84000 0x2000>,
<0x01c86000 0x2000>;
interrupt-controller;
#interrupt-cells = <3>;
interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
};
};
};sun8i-v3s-licheepi-zero.dts:
/*
* Copyright (C) 2016 Icenowy Zheng <icenowy@aosc.xyz>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/dts-v1/;
#include "sun8i-v3s.dtsi"
#include "sunxi-common-regulators.dtsi"
/ {
model = "Lichee Pi Zero";
compatible = "licheepi,licheepi-zero", "allwinner,sun8i-v3s";
aliases {
serial0 = &uart0;
};
chosen {
stdout-path = "serial0:115200n8";
};
pir{
label = "licheepi:blue:usr";
gpio-pir = <&pio 6 5 GPIO_ACTIVE_HIGH>; /* PG5 */
};
door_magnet{
label = "licheepi:blue:usr";
gpio-door_magnet = <&pio 6 4 GPIO_ACTIVE_HIGH>; /* PG4 */
};
leds {
compatible = "gpio-leds";
blue_led {
label = "licheepi:blue:usr";
gpios = <&pio 6 1 GPIO_ACTIVE_LOW>; /* PG1 */
};
green_led {
label = "licheepi:green:usr";
gpios = <&pio 6 0 GPIO_ACTIVE_LOW>; /* PG0 */
default-state = "on";
};
red_led {
label = "licheepi:red:usr";
gpios = <&pio 6 2 GPIO_ACTIVE_LOW>; /* PG2 */
};
};
door_key{
compatible = "door_key";
key-gpio = <&pio 6 3 GPIO_ACTIVE_LOW>;
};
lcd_key{
compatible = "lcd_key";
key-gpio = <&pio 6 2 GPIO_ACTIVE_LOW>;
};
};
&ehci0 {
status = "okay";
};
&mmc0 {
broken-cd;
bus-width = <4>;
vmmc-supply = <®_vcc3v3>;
status = "okay";
};
&i2c0 {
status = "okay";
ns2009: ns2009@48 {
compatible = "nsiway,ns2009";
reg = <0x48>;
};
};
&ohci0 {
status = "okay";
};
&uart0 {
pinctrl-0 = <&uart0_pb_pins>;
pinctrl-names = "default";
status = "okay";
};
&usb_otg {
dr_mode = "otg";
status = "okay";
};
&usbphy {
usb0_id_det-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>;
status = "okay";
};
&csi1 {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&csi1_clk &csi1_8bit>;
port {
csi1_ep: endpoint {
remote-endpoint = <&ov2640_0>;
hsync-active = <0>;
vsync-active = <0>;
bus-width = <10>;
pclk-sample = <1>;
};
};
};
&i2c1 {
pinctrl-0 = <&i2c1_pins>;
pinctrl-names = "default";
status = "okay";
ov2640: camera@30 {
compatible = "ovti,ov2640";
reg = <0x30>;
pinctrl-names = "default";
pinctrl-0 = <&csi1_mclk>;
clocks = <&ccu CLK_CSI1_MCLK>;
clock-names = "xvclk";
assigned-clocks = <&ccu CLK_CSI1_MCLK>;
assigned-clock-rates = <24000000>;
port {
ov2640_0: endpoint {
remote-endpoint = <&csi1_ep>;
bus-width = <10>;
};
};
};
};
&spi0 {
status = "okay";
ili9341@0 {
compatible = "ilitek,ili9341";
reg = <0>;
spi-max-frequency = <15000000>;
rotate = <270>;
bgr;
fps = <10>;
buswidth = <8>;
reset-gpios = <&pio 1 7 GPIO_ACTIVE_LOW>;
dc-gpios = <&pio 1 5 GPIO_ACTIVE_LOW>;
debug = <0>;
};
};#19 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-24 21:04:08
无痕 说：
哇酷小二 说：没理由，只能怀疑你改错了文件，或者dtb没有起作用。
我百度了下那错误，找到这个帖子，但是我看不懂。晕哥可以看下它写的内容
https://blog.csdn.net/qulang000/article/details/114686525
按照里面的操作，修改bug引脚相关代码后，还是报同样的错误。
#20 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-24 17:46:57
哇酷小二 说：
没理由，只能怀疑你改错了文件，或者dtb没有起作用。
我百度了下那错误，找到这个帖子，但是我看不懂。晕哥可以看下它写的内容
https://blog.csdn.net/qulang000/article/details/114686525
#21 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-24 17:45:19
哇酷小二 说：
当然要动啊，删除或者改
status = "disabled";
我刚刚在内核4.13.16版本上，按照教程一步步操作，发现没有遇到在5.2版本上的错误。
下面是运行成功的log，但是屏幕并没有亮起来。
[ 1.244305] fbtft_of_value: buswidth = 8
[ 1.248267] fbtft_of_value: debug = 0
[ 1.251925] fbtft_of_value: rotate = 270
[ 1.255841] fbtft_of_value: fps = 10
[ 1.304740] mmc0: host does not support reading read-only switch, assuming write-enable
[ 1.314784] mmc0: new high speed SDHC card at address 1234
[ 1.320956] mmcblk0: mmc0:1234 SA08G 7.21 GiB
[ 1.327049] mmcblk0: p1 p2
[ 1.609569] Console: switching to colour frame buffer device 40x30
[ 1.616454] graphics fb0: fb_ili9341 frame buffer, 320x240, 150 KiB video memory, 16 KiB buffer memory, fps=10, spi32766.0 at 15 MHz使用下面的命令，并没有发现屏幕出现变化
cat /dev/urandom > /dev/fb0
cat /dev/zero > /dev/fb0#22 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-24 17:31:40
哇酷小二 说：
当然要动啊，删除或者改
status = "disabled";
修改后还是报原来的错误。
[ 1.176248] fbtft_of_value: buswidth = 8
[ 1.180222] fbtft_of_value: debug = 0
[ 1.183881] fbtft_of_value: rotate = 270
[ 1.187798] fbtft_of_value: fps = 10
[ 1.192082] fb_ili9341 spi0.0: Failed to request reset-gpios GPIO:-2
[ 1.198681] fb_ili9341: probe of spi0.0 failed with error -2下面我重新贴下几个文件的相关代码。
sun8i-v3s-licheepi-zero.dts文件
183 &spi0 {
184 status = "okay";
185 ili9341@0 {
186 compatible = "ilitek,ili9341";
187 reg = <0>;
188 spi-max-frequency = <15000000>;
189 rotate = <270>;
190 bgr;
191 fps = <10>;
192 buswidth = <8>;
193 reset-gpios = <&pio 1 7 GPIO_ACTIVE_LOW>;
194 dc-gpios = <&pio 1 5 GPIO_ACTIVE_LOW>;
195 debug = <0>;
196 };
197 };sun8i-v3s.dtsi文件
521 i2c0: i2c@1c2ac00 {
522 compatible = "allwinner,sun6i-a31-i2c";
523 reg = <0x01c2ac00 0x400>;
524 interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
525 clocks = <&ccu CLK_BUS_I2C0>;
526 resets = <&ccu RST_BUS_I2C0>;
527 pinctrl-names = "default";
528 pinctrl-0 = <&i2c0_pins>;
529 status = "eabled";
530 #address-cells = <1>;
531 #size-cells = <0>;
532 };#23 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-24 15:58:35
#24 Re: 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-24 15:42:22
哇酷小二 说：
获取dtb 里面 reset 引脚错误
linux错误代码: https://mariadb.com/kb/en/operating-system-error-codes/
sun8i-v3.dtsi下的pio节点
pio: pinctrl@1c20800 {
compatible = "allwinner,sun8i-v3s-pinctrl";
reg = <0x01c20800 0x400>;
interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_PIO>, <&osc24M>, <&osc32k>;
clock-names = "apb", "hosc", "losc";
gpio-controller;
#gpio-cells = <3>;
interrupt-controller;
#interrupt-cells = <3>;
emac_rgmii_pins: emac-rgmii-pins {
pins = "PD0", "PD1", "PD2", "PD3", "PD4",
"PD5", "PD7", "PD8", "PD9", "PD10",
"PD12", "PD13", "PD15", "PD16", "PD17";
function = "emac";
drive-strength = <40>;
};
i2c0_pins: i2c0-pins {
pins = "PB6", "PB7";
function = "i2c0";
};
pwm0_pins: pwm0 {
pins = "PB4";
function = "pwm0";
};
uart0_pb_pins: uart0-pb-pins {
pins = "PB8", "PB9";
function = "uart0";
};
lcd_rgb666_pins_a: lcd-rgb666-pe {
pins = "PE0", "PE1", "PE2", "PE3", "PE4", "PE5",
"PE6", "PE7", "PE8", "PE9", "PE10", "PE11",
"PE12", "PE13", "PE14", "PE15", "PE16", "PE17",
"PE18", "PE19", "PE23", "PE24";
function = "lcd";
};
mmc0_pins: mmc0-pins {
pins = "PF0", "PF1", "PF2", "PF3",
"PF4", "PF5";
function = "mmc0";
drive-strength = <30>;
bias-pull-up;
};
mmc1_pins: mmc1-pins {
pins = "PG0", "PG1", "PG2", "PG3",
"PG4", "PG5";
function = "mmc1";
drive-strength = <30>;
bias-pull-up;
};
spi0_pins: spi0-pins {
pins = "PC0", "PC1", "PC2", "PC3";
function = "spi0";
};
pwm1_pins: pwm1 {
pins = "PB5";
function = "pwm1";
};
csi1_8bit: csi1-8bit@0 {
pins = "PE6","PE7","PE8","PE9","PE10","PE11","PE12","PE13","PE14","PE15";
bias-disable;
function = "csi";
};
csi1_clk: csi1-clk@0 {
pins = "PE0","PE2","PE3";
bias-disable;
function = "csi";
};
csi1_mclk: csi1-mclk@0 {
pins = "PE1";
bias-disable;
function = "csi";
};
i2c1_pins: i2c1 {
pins = "PE21", "PE22";
function = "i2c1";
};
};sun8i-v3s-licheepi-zero.dts下的spi节点
163 &spi0 {
164 status = "okay";
165 ili9341@0 {
166 compatible = "ilitek,ili9341";
167 reg = <0>;
168 spi-max-frequency = <15000000>;
169 rotate = <270>;
170 bgr;
171 fps = <10>;
172 buswidth = <8>;
173 reset-gpios = <&pio 1 7 GPIO_ACTIVE_LOW>;
174 dc-gpios = <&pio 1 5 GPIO_ACTIVE_LOW>;
175 debug = <0>;
176 };
177 };173 reset-gpios = <&pio 1 7 GPIO_ACTIVE_LOW>; 指的是PB7，是i2c0的SDA引脚，讲道理是可以获取到这个引脚的。配置教程上面也说了，SPI屏幕的复位引脚可以直接接电源的，所以不接PB7也可以。所以我不清楚为什么会获取dtb里面 reset 引脚发生错误
#25 全志 SOC » 5.2内核，启动SPI屏幕（ili9341）失败 » 2021-04-24 15:18:20
- 无痕
- 回复： 51
内核版本：zero-5.2.y
按照晕哥写的教程，一步一步操作。
https://whycan.com/t_576.html#p1579
内核启动log中显示如下：
[ 1.052704] fbtft_of_value: buswidth = 8
[ 1.056628] fbtft_of_value: debug = 0
[ 1.060326] fbtft_of_value: rotate = 270
[ 1.064244] fbtft_of_value: fps = 10
[ 1.068691] fb_ili9341 spi0.0: Failed to request reset-gpios GPIO:-2
[ 1.075218] fb_ili9341: probe of spi0.0 failed with error -2是不是zero-5.2.y的内核太新了，改了什么东西，导致按照上面的流程操作后，启动失败。
#26 全志 SOC » ov2640在荔枝派上使用ffmpeg录制视频报以下错误，在虚拟机上运行则不会。 » 2021-04-21 15:21:51
- 无痕
- 回复： 0
内核：zero.5.2-y
运行命令：ffmpeg -S 10 -f video4linux2 -s 800x600 -r 30 -i /dev/video0 test.avi
报错log：
[ 570.389211] ffmpeg: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL), nodemask=(null)
[ 570.397874] CPU: 0 PID: 216 Comm: ffmpeg Not tainted 5.2.0-licheepi-zero #6
[ 570.404829] Hardware name: Allwinner sun8i Family
[ 570.409563] [<c010ec34>] (unwind_backtrace) from [<c010b6cc>] (show_stack+0x10/0x14)
[ 570.417311] [<c010b6cc>] (show_stack) from [<c06cc540>] (dump_stack+0x94/0xa8)
[ 570.424536] [<c06cc540>] (dump_stack) from [<c01fa62c>] (warn_alloc+0xc8/0x16c)
[ 570.431844] [<c01fa62c>] (warn_alloc) from [<c01fb1bc>] (__alloc_pages_nodemask+0xa4c/0xd50)
[ 570.440276] [<c01fb1bc>] (__alloc_pages_nodemask) from [<c0113eb4>] (__dma_alloc_buffer+0x38/0x184)
[ 570.449314] [<c0113eb4>] (__dma_alloc_buffer) from [<c011468c>] (remap_allocator_alloc+0x34/0x8c)
[ 570.458177] [<c011468c>] (remap_allocator_alloc) from [<c01141ac>] (__dma_alloc+0x180/0x260)
[ 570.466605] [<c01141ac>] (__dma_alloc) from [<c0114308>] (arm_dma_alloc+0x40/0x48)
[ 570.474169] [<c0114308>] (arm_dma_alloc) from [<c017bcc8>] (dma_alloc_attrs+0x100/0x110)
[ 570.482259] [<c017bcc8>] (dma_alloc_attrs) from [<c053853c>] (vb2_dc_alloc+0x64/0x104)
[ 570.490178] [<c053853c>] (vb2_dc_alloc) from [<c0531dec>] (__vb2_queue_alloc+0x184/0x404)
[ 570.498353] [<c0531dec>] (__vb2_queue_alloc) from [<c05325a4>] (vb2_core_reqbufs+0x2ac/0x404)
[ 570.506872] [<c05325a4>] (vb2_core_reqbufs) from [<c0535d9c>] (vb2_ioctl_reqbufs+0x74/0x9c)
[ 570.515222] [<c0535d9c>] (vb2_ioctl_reqbufs) from [<c051038c>] (__video_do_ioctl+0x24c/0x448)
[ 570.523743] [<c051038c>] (__video_do_ioctl) from [<c0512334>] (video_usercopy+0x24c/0x514)
[ 570.532004] [<c0512334>] (video_usercopy) from [<c0226f6c>] (do_vfs_ioctl+0xac/0x8f4)
[ 570.539830] [<c0226f6c>] (do_vfs_ioctl) from [<c02277e8>] (ksys_ioctl+0x34/0x5c)
[ 570.547222] [<c02277e8>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x54)
[ 570.554867] Exception stack(0xc12f9fa8 to 0xc12f9ff0)
[ 570.559916] 9fa0: 00055250 00055a80 00000003 c0145608 bed4e210 b58961b1
[ 570.568084] 9fc0: 00055250 00055a80 00000000 00000036 00055a90 bed4e2a8 32315559 00055a80
[ 570.576249] 9fe0: 00000001 bed4dedc b6ef2540 b58961b8
[ 570.581423] Mem-Info:
[ 570.583717] active_anon:370 inactive_anon:3 isolated_anon:0
[ 570.583717] active_file:2138 inactive_file:846 isolated_file:32
[ 570.583717] unevictable:0 dirty:1 writeback:126 unstable:0
[ 570.583717] slab_reclaimable:245 slab_unreclaimable:1141
[ 570.583717] mapped:1356 shmem:20 pagetables:46 bounce:0
[ 570.583717] free:7096 free_pcp:0 free_cma:0
[ 570.615763] Node 0 active_anon:1480kB inactive_anon:12kB active_file:8552kB inactive_file:3384kB unevictable:0kB isolated(anon):0kB isolated(file):128kB mapped:5424kB dirty:4kB writeback:504kB shmem:80kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 570.638434] Normal free:28384kB min:924kB low:1152kB high:1380kB active_anon:1480kB inactive_anon:12kB active_file:8552kB inactive_file:3384kB unevictable:0kB writepending:512kB present:64036kB managed:54572kB mlocked:0kB kernel_stack:312kB pagetables:184kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 570.665593] lowmem_reserve[]: 0 0 0
[ 570.669093] Normal: 168*4kB (M) 80*8kB (UM) 30*16kB (UM) 73*32kB (UM) 63*64kB (UM) 28*128kB (UM) 27*256kB (UM) 19*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 28384kB
[ 570.683451] 3038 total pagecache pages
[ 570.687196] 0 pages in swap cache
[ 570.690517] Swap cache stats: add 0, delete 0, find 0/0
[ 570.695732] Free swap = 0kB
[ 570.698619] Total swap = 0kB
[ 570.701495] 16009 pages RAM
[ 570.704284] 0 pages HighMem/MovableOnly
[ 570.708121] 2366 pages reserved
[ 570.711278] sun6i-csi 1cb4000.csi: dma_alloc_coherent of size 720896 failed请问为什么会出现这个错误：ffmpeg: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL), nodemask=(null)
有什么办法可以解决呢？
#27 Re: 全志 SOC » 全志 A33 官方 dragonboard SDK 建立 SSHD 服务器, 电脑通过WIFI连接A33 SSHD服务器 [分享] » 2021-04-20 10:24:59
#28 Re: 全志 SOC » 编解码引擎 CedarX for Mainline Linux v5.4 » 2021-02-28 00:52:43
你好！
根据github上的指导移植驱动，并且在/dev目录下找到cedar_dev和ion节点。
并且完成了下面的操作：
Allwinner CedarX userspace library
Based on lindenis-v536 SDK
Add package to buildroot system
Copy dir "buildroot-package/libcedarc" to "buildroot/package"
Modify "buildroot/package/Config.in", add package source to any menu you want
source "package/libcedarc/Config.in"
Demo
menu "Hardware handling"
source "package/libcedarc/Config.in" # <--Add
source "package/acsccid/Config.in"
source "package/bcm2835/Config.in"
Build
make menuconfig
Select "libcedarc" package
make
Work with ffmpeg (tested with buildroot 2020.02.1)
make menuconfig
goto "> Target packages > Audio and video applications > ffmpeg"
set "(--enable-omx) Additional parameters for ./configure"
recompile ffmpeg以上操作完之后，要如何使用h264硬编码的功能呢？请大佬指点！
#29 Re: 全志 SOC » 围观蓝莓派(Blueberry-PI)之后, 一定要试一试 主线 Linux DVP CSI 摄像头 » 2021-02-20 21:35:29
哇酷小二 说：
无痕 说：晕哥！！设备树的配置方法连接失效了！！麻烦再发一下
谢谢哥！
#31 Re: 全志 SOC » 全志V3s采用UDP视频传输H264效果很好 » 2021-02-04 21:37:42
raspberryman 说：
无痕 说：请问在linux下如何使用全志V3S的硬编码（x.264）功能？
V3s使用gstreamer的插件openmax调用cedar硬解码，荔枝派zero测试通过
http://whycan.com/t_5398.html
(出处:哇酷开发者社区)这是主线linux的
谢谢！我看看
#32 Re: 全志 SOC » V3S挖坑EC20 » 2021-02-04 21:18:39
#33 Re: 全志 SOC » 全志V3s采用UDP视频传输H264效果很好 » 2021-02-04 16:25:09
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