Re: [PATCH] arm64: dts: rockchip: Fix microSD in Sapphire board

[Heiko Stuebner <heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>]

Am Montag, 17. September 2018, 15:47:14 CEST schrieb Vicente Bergas:
> The microSD card slot in the Sapphire board is not working because of
> several issues:
>  1.- The vmmc power supply is missing in the DTS. It is capable of 3.0V
>  and has a GPIO-based enable control.
>  2.- The vqmmc power supply can provide up to 3.3V, but it is capped in
>  the DTS to just 3.0V because of the vmmc capability. This results in a
>  conflict from the mmc driver requesting an unsupportable voltage range
>  from 3.3V to 3.0V (min > max) as reported in dmesg. So, extend the
>  range up to 3.3V. The hw should be able to stand this 0.3V tolerance.
>  See mmc_regulator_set_vqmmc in drivers/mmc/core/core.c.
>  3.- The card detect signal is non-working. There is a known conflict
>  with jtag, but the workaround in drivers/soc/rockchip/grf.c does not
>  work. Adding the broken-cd attribute to the DTS fixes the issue.
> 
> Signed-off-by: Vicente Bergas <vicencb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

applied for 4.20

Thanks
Heiko