linux-kernel - Re: [PATCH v4 4/4] riscv: dts: add mmc controllers for Sophgo SG2042 SoC

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Date: Tue, 18 Jun 2024 11:40:48 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Chen Wang <unicornxw@...il.com>, adrian.hunter@...el.com,
 aou@...s.berkeley.edu, conor+dt@...nel.org, guoren@...nel.org,
 inochiama@...look.com, jszhang@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, palmer@...belt.com,
 paul.walmsley@...ive.com, robh@...nel.org, ulf.hansson@...aro.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-mmc@...r.kernel.org, linux-riscv@...ts.infradead.org,
 chao.wei@...hgo.com, haijiao.liu@...hgo.com, xiaoguang.xing@...hgo.com,
 tingzhu.wang@...hgo.com
Cc: Chen Wang <unicorn_wang@...look.com>
Subject: Re: [PATCH v4 4/4] riscv: dts: add mmc controllers for Sophgo SG2042
 SoC

On 18/06/2024 10:39, Chen Wang wrote:
> From: Chen Wang <unicorn_wang@...look.com>
> 
> SG2042 has two MMC controller, one for emmc, another for sd-card.
> 
> Signed-off-by: Chen Wang <unicorn_wang@...look.com>
> ---
>  .../boot/dts/sophgo/sg2042-milkv-pioneer.dts  | 17 ++++++++++
>  arch/riscv/boot/dts/sophgo/sg2042.dtsi        | 32 +++++++++++++++++++
>  2 files changed, 49 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
> index 49b4b9c2c101..164db23586e0 100644
> --- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
> +++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
> @@ -14,6 +14,23 @@ chosen {
>  	};
>  };
>  
> +&emmc {
> +	bus-width = <4>;
> +	no-sdio;
> +	no-sd;
> +	non-removable;
> +	wp-inverted;
> +	status = "okay";
> +};
> +
> +&sd {
> +	bus-width = <4>;
> +	no-sdio;
> +	no-mmc;
> +	wp-inverted;
> +	status = "okay";
> +};
> +
>  &uart0 {
>  	status = "okay";
>  };
> diff --git a/arch/riscv/boot/dts/sophgo/sg2042.dtsi b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
> index 81fda312f988..bfdfd6f32912 100644
> --- a/arch/riscv/boot/dts/sophgo/sg2042.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/sg2042.dtsi
> @@ -346,5 +346,37 @@ uart0: serial@...0000000 {
>  			resets = <&rstgen RST_UART0>;
>  			status = "disabled";
>  		};
> +
> +		emmc: mmc@...002a000 {
> +			compatible = "sophgo,sg2042-dwcmshc";
> +			reg = <0x70 0x4002A000 0x0 0x1000>;

Lowercase hex.

> +			interrupt-parent = <&intc>;
> +			interrupts = <134 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks =

Odd wrapping. Don't. See DTS coding style.

> +				<&clkgen GATE_CLK_AXI_EMMC>,
> +				<&clkgen GATE_CLK_100K_EMMC>,
> +				<&clkgen GATE_CLK_EMMC_100M>;
> +			clock-names =

Ditto

> +				"core",
> +				"timer",
> +				"card";
> +			status = "disabled";


Best regards,
Krzysztof