esp-hosted-fg SDIO questions

[gdaneels]

Hi,

I am trying out the esp-hosted first generation with SDIO.

I have 3 questions:

• I am using the ESP32 Wrover Kit (with the ESP-WROVER-B module onboard). On the troubleshoot page, it says it is best to use this board (because the required pull-ups are present). However, when I read the Espressif's docs, I also read that there are 2 more issues (Pull-up conflicts on GPIO13 and conflicts between bootstrap and SDIO on GPIO12). Do we have to resolve these issues on our Wrover Kit as well (as suggestd on the page), or are these not a problem for the esp-hosted-fg?

• When compiling the kernel module out-of-the-box (for iMX6UL, kernel 5.4.210+gf2663e3, yocto build (dunfell)), I get the error that LINUX_VERSION_CODE and KERNEL_VERSION are not defined (see attached log). This is easily fixed by including <linux/version.h> in esp.h (see attached patch). Am I the only experiencing this issue?

• Concerning SDIO support, I've read on the issues threads and in the docs, that SDIO support will come for ESP32-C6. Is there any update on this? This support will be for both the first and next generation esp-hosted? In addition, is there any particular reason there will not be any SDIO support for the ESP32-C3 and ESP32-S3 (or will they also be supported)?

Thanks in advance.

linux-version.log esp_linux_version_patch.txt