Hi Biju,
On Thu, Oct 7, 2021 at 5:55 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote:
> RZ/G2L SoM has both 64Gb eMMC and micro SD connected to SDHI0.
>
> Both these interfaces are mutually exclusive and the SD0 device
> selection is based on the XOR between GPIO_SD0_DEV_SEL and SW1[2]
> switch position.
>
> This patch sets GPIO_SD0_DEV_SEL to high in DT. Use the below switch
> setting logic for device selection between eMMC and microSD slot
> connected to SDHI0.
>
> Set SW1[2] to position 2/OFF for selecting eMMC
> Set SW1[2] to position 3/ON for selecting micro SD
>
> This patch enables eMMC on RZ/G2L SMARC platform by default.
>
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> --- a/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
> +++ b/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
> + vccq_sdhi0: regulator-vccq-sdhi0 {
> + compatible = "regulator-gpio";
> +
> + regulator-name = "SDHI0 VccQ";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <3300000>;
> + states = <3300000 1 1800000 0>;
> + regulator-boot-on;
> + gpios = <&pinctrl RZG2L_GPIO(39, 0) GPIO_ACTIVE_HIGH>;
Is this correct?
According to the schematics, the GPIO should be high to select 3.3V.
> + regulator-always-on;
> + };
> };
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
