水一下经验替代文字

@ylyamin 在 RT-Thread on D1H. LCD work, USB in progress. 中说：

I’m really stuck with the USB driver. It can detect device connections, but communication has not started.<br>
Perhaps someone would enjoy diving deep into the USB driver to solve this riddle. Ready for issue reports and pull requests.
Picture of LCD Display test in RT-Thread running on uConsole R-01:

nice work!
I'd like to help, and just bought a Sipeed Lichee RV board.

@linxingqianglai 参考前面的说明：

u-boot.fex 使用 linux3.4/uboot2011 的平台最终用到的 uboot,其实是uboot+sys_config。
boot_package.fex 使用 linux3.10/uboot2014 及更高版本的平台最终用到的 uboot,其实包含的文件由配置文件 boot_package.cfg决定，一般至少包含了 uboot和 dtb,安全方案会包含一些安全所需文件文件,可能还有 bootlogo 等文件。
toc1.fex 安全方案使用的 uboot, 类似 boot_package.fex说明,其中实际也包含了 dts 等多个文件。

@dazb3 there's a i2s doc on 100ask.net https://forums.100ask.net/uploads/short-url/3Da0tOrvGPKeV7Be36UVkzivSE6.pdf

to test i2s, why not try aplay or tinyplay?

@ylyamin 在 R-01 library for small OS 中说：

requests

Since LCD RGB is working, DE probably working fine. So what is left could be LCD MIPI part.

Allwinner tends to use the same code everywhere, so there could be a problem to find alternatives. Mainline Linux kernel maybe the only place to look at. Also logic analyzer maybe needed for this kind of task.

Another reference could be xboot project: https://github.com/xboot/xboot , but seems main activities goes into LCD RGB.

more details will help.
I'm not sure but if you are using builtroot, python-spidev should be the package?

like this:
https://gerrit.cesnet.cz/plugins/gitiles/github/buildroot/buildroot/+/63d0762ab72a3536ea2e07ac75327c7556ed72c1/package/python-spidev/

@ylyamin 在 R-01 library for small OS 中说：

requests

Since LCD RGB is working, DE probably working fine. So what is left could be LCD MIPI part.

Allwinner tends to use the same code everywhere, so there could be a problem to find alternatives. Mainline Linux kernel maybe the only place to look at. Also logic analyzer maybe needed for this kind of task.

Another reference could be xboot project: https://github.com/xboot/xboot , but seems main activities goes into LCD RGB.

这个板子为啥不能加个PD供电呢

http://www.orangepi.cn/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-4A.html

没散热压不住吧，可以安装散热风扇吗？

@lknn2012 不用配，好像是uboot里会自动新增

@ylyamin 在 RT-Thread on D1H. LCD work, USB in progress. 中说：

I’m really stuck with the USB driver. It can detect device connections, but communication has not started.<br>
Perhaps someone would enjoy diving deep into the USB driver to solve this riddle. Ready for issue reports and pull requests.
Picture of LCD Display test in RT-Thread running on uConsole R-01:

nice work!
I'd like to help, and just bought a Sipeed Lichee RV board.

@dazb3

chatgpt suggested no python-spidev is included by default, and should check python before add python-spidev.

3. Install python-spidev

python-spidev is usually not included directly in OpenWRT feeds, but it can be compiled from source as part of the build.

First, check for python3:

./scripts/feeds install python3

following is a link include python-spidev package by OnionIoT, switch to the right branch which matches tina sdk openwrt version:
https://github.com/OnionIoT/OpenWRT-Packages

more details will help.
I'm not sure but if you are using builtroot, python-spidev should be the package?

like this:
https://gerrit.cesnet.cz/plugins/gitiles/github/buildroot/buildroot/+/63d0762ab72a3536ea2e07ac75327c7556ed72c1/package/python-spidev/

@dazb3 there's a i2s doc on 100ask.net https://forums.100ask.net/uploads/short-url/3Da0tOrvGPKeV7Be36UVkzivSE6.pdf

to test i2s, why not try aplay or tinyplay?

@linxingqianglai 参考前面的说明：

u-boot.fex 使用 linux3.4/uboot2011 的平台最终用到的 uboot,其实是uboot+sys_config。
boot_package.fex 使用 linux3.10/uboot2014 及更高版本的平台最终用到的 uboot,其实包含的文件由配置文件 boot_package.cfg决定，一般至少包含了 uboot和 dtb,安全方案会包含一些安全所需文件文件,可能还有 bootlogo 等文件。
toc1.fex 安全方案使用的 uboot, 类似 boot_package.fex说明,其中实际也包含了 dts 等多个文件。