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SubjectRe: [PATCH 1/8] arm64: dts: imx8mm-nitrogen-r2: add wifi/bt chip
On Tue, Feb 16, 2021 at 12:19:36AM +0100, Adrien Grassein wrote:
> Add usdhc3 description which corresponds to the wifi/bt chip
>
> Signed-off-by: Adrien Grassein <adrien.grassein@gmail.com>
> ---
> .../boot/dts/freescale/imx8mm-nitrogen-r2.dts | 31 +++++++++++++++++++
> 1 file changed, 31 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts b/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
> index c0c384d76147..bf20a40bcda0 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-nitrogen-r2.dts
> @@ -9,6 +9,18 @@
> / {
> model = "Boundary Devices i.MX8MMini Nitrogen8MM Rev2";
> compatible = "boundary,imx8mm-nitrogen8mm", "fsl,imx8mm";
> +
> + reg_wlan_vmmc: regulator-wlan-vmmc {
> + compatible = "regulator-fixed";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_reg_wlan_vmmc>;
> + regulator-name = "reg_wlan_vmmc";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + gpio = <&gpio3 20 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + startup-delay-us = <70000>;

That's quite a startup time... and it happens is the same as in bindings
example. Do you really need it or it was just copied?

I actually don't mind it, just poking at various things. :)

> + };
> };
>
> &A53_0 {
> @@ -206,6 +218,19 @@ &usdhc2 {
> status = "okay";
> };
>
> +/* wlan */
> +&usdhc3 {
> + bus-width = <4>;
> + sdhci-caps-mask = <0x2 0x0>;
> + non-removable;
> + pinctrl-names = "default", "state_100mhz", "state_200mhz";
> + pinctrl-0 = <&pinctrl_usdhc3>;
> + pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
> + pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
> + vmmc-supply = <&reg_wlan_vmmc>;

What about vqmmc?

Best regards,
Krzysztof

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