linux-kernel - Re: [PATCH] arm64: dts: rockchip: Add sdmmc

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Date:   Wed, 23 Jun 2021 14:53:22 +0200
From:   Johan Jonker <jbx6244@...il.com>
To:     Alex Bee <knaerzche@...il.com>, Heiko Stuebner <heiko@...ech.de>
Cc:     Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: rockchip: Add sdmmc_ext for RK3328

Hi Alex,

make ARCH=arm64 dtbs_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml

On 6/23/21 2:00 PM, Alex Bee wrote:
> RK3328 SoC has a fourth mmc controller called SDMMC_EXT. Some
> boards have sdio wifi connected to it. In order to use it
> one would have to add the pinctrls from sdmmc0ext group which
> is done on board level.
> 
> While at that also add the reset controls for the other mmc
> controllers.
> 
> Signed-off-by: Alex Bee <knaerzche@...il.com>
> ---
>  arch/arm64/boot/dts/rockchip/rk3328.dtsi | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
> index da84be6f4715..c13fa2f3f4cd 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
> @@ -858,6 +858,8 @@ sdmmc: mmc@...00000 {
>  		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
>  		fifo-depth = <0x100>;
>  		max-frequency = <150000000>;
> +		resets = <&cru SRST_MMC0>;
> +		reset-names = "reset";
>  		status = "disabled";
>  	};
>  
> @@ -870,6 +872,8 @@ sdio: mmc@...10000 {
>  		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
>  		fifo-depth = <0x100>;
>  		max-frequency = <150000000>;
> +		resets = <&cru SRST_SDIO>;
> +		reset-names = "reset";
>  		status = "disabled";
>  	};
>  
> @@ -882,6 +886,8 @@ emmc: mmc@...20000 {
>  		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
>  		fifo-depth = <0x100>;
>  		max-frequency = <150000000>;
> +		resets = <&cru SRST_EMMC>;
> +		reset-names = "reset";
>  		status = "disabled";
>  	};
>  
> @@ -980,6 +986,20 @@ usb_host0_ohci: usb@...d0000 {
>  		status = "disabled";
>  	};
>  

> +	sdmmc_ext: dwmmc@...f0000 {

/arch/arm64/boot/dts/rockchip/rk3328-evb.dt.yaml: dwmmc@...f0000:
$nodename:0: 'dwmmc@...f0000' does not match '^mmc(@.*)?$'

> +		compatible = "rockchip,rk3328-dw-mshc", "rockchip,rk3288-dw-mshc";
> +		reg = <0x0 0xff5f0000 0x0 0x4000>;
> +		interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&cru HCLK_SDMMC_EXT>, <&cru SCLK_SDMMC_EXT>,
> +			 <&cru SCLK_SDMMC_EXT_DRV>, <&cru SCLK_SDMMC_EXT_SAMPLE>;
> +		clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
> +		fifo-depth = <0x100>;
> +		max-frequency = <150000000>;
> +		resets = <&cru SRST_SDMMCEXT>;
> +		reset-names = "reset";
> +		status = "disabled";
> +	};
> +
>  	usbdrd3: usb@...00000 {
>  		compatible = "rockchip,rk3328-dwc3", "snps,dwc3";
>  		reg = <0x0 0xff600000 0x0 0x100000>;
>