On 6/18/20 10:33 PM, Adam Ford wrote:
I am trying to port U-Boot to a new product based on a Renesas RZ/G2M (rcar-gen3). We're have this working with Renesas' version from 2018.09, but I am trying to integrate it with U-Boot 2020.07-rc4
What's happening is that it seems like all GPIO are failing to be requested, so things like regulator-gpio fail, reset-gpios, etc. all return errors.
The dm tree and gpio status commands all appear to show gpio banks are enumerating, but since nothing can use the GPIO's it seems like the common thread is the gpio driver for the rcar3.
I was hoping someone might have some thoughts of things I could try or investigate. In order to properly set the voltage for the MMC card, I need "regulator-gpio" to operate correctly.
Note that RZ/G2M is not supported by mainline U-Boot.
Also note that the GPIO driver and PFC drivers are working together, grep for sh_pfc_config_mux_for_gpio(), so unless both work and probed, the GPIO driver will likely not work.
Can you provide 'dm tree' output ?