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

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Date:   Wed, 23 Jun 2021 15:53:18 +0200
From:   Alex Bee <knaerzche@...il.com>
To:     Johan Jonker <jbx6244@...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 Johan,

Am 23.06.21 um 14:53 schrieb Johan Jonker:
> 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:
> $nodename:0: 'dwmmc@...f0000' does not match '^mmc(@.*)?$'

Argh: I submitted the pre-dtbs_check version. Thanks for checking.

Alex.

>> +		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>;
>>