linux-kernel - Re: [PATCH 2/2] arm64: dts: ti: k3-am62a7-sk: Enable eMMC support

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Message-ID: <20231027112300.kcmca2litqud27px@dragonfly>
Date:   Fri, 27 Oct 2023 06:23:00 -0500
From:   Nishanth Menon <nm@...com>
To:     Nitin Yadav <n-yadav@...com>
CC:     <vigneshr@...com>, <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] arm64: dts: ti: k3-am62a7-sk: Enable eMMC support

On 15:09-20231027, Nitin Yadav wrote:
> Add support for 32GB eMMC card on AM62A7. Includes adding mmc0
> pins settings and set sdhci0 status to okay.

You can drop the second sentence. Also, in this case, since you are
modifying the board dts, it should be AM62A7 SK.

> 
> Signed-off-by: Nitin Yadav <n-yadav@...com>
> ---
>  arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
> index 5d28c390b28e..c6f144d91734 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
> @@ -173,6 +173,22 @@ AM62AX_IOPAD(0x0b4, PIN_INPUT_PULLUP, 1) /* (K24) GPMC0_CSn3.I2C2_SDA */
>  		>;
>  	};
>  
> +	main_mmc0_pins_default: main-mmc0-default-pins {
> +		pinctrl-single,pins = <
> +			AM62AX_IOPAD(0x220, PIN_INPUT, 0) /* (Y3) MMC0_CMD */
> +			AM62AX_IOPAD(0x218, PIN_INPUT, 0) /* (AB1) MMC0_CLKLB */
> +			AM62AX_IOPAD(0x21c, PIN_INPUT, 0) /* (AB1) MMC0_CLK */
> +			AM62AX_IOPAD(0x214, PIN_INPUT, 0) /* (AA2) MMC0_DAT0 */
> +			AM62AX_IOPAD(0x210, PIN_INPUT_PULLUP, 0) /* (AA1) MMC0_DAT1 */
> +			AM62AX_IOPAD(0x20c, PIN_INPUT_PULLUP, 0) /* (AA3) MMC0_DAT2 */
> +			AM62AX_IOPAD(0x208, PIN_INPUT_PULLUP, 0) /* (Y4) MMC0_DAT3 */
> +			AM62AX_IOPAD(0x204, PIN_INPUT_PULLUP, 0) /* (AB2) MMC0_DAT4 */
> +			AM62AX_IOPAD(0x200, PIN_INPUT_PULLUP, 0) /* (AC1) MMC0_DAT5 */
> +			AM62AX_IOPAD(0x1fc, PIN_INPUT_PULLUP, 0) /* (AD2) MMC0_DAT6 */
> +			AM62AX_IOPAD(0x1f8, PIN_INPUT_PULLUP, 0) /* (AC2) MMC0_DAT7 */
> +		>;
> +	};
> +
>  	main_mmc1_pins_default: main-mmc1-default-pins {
>  		pinctrl-single,pins = <
>  			AM62AX_IOPAD(0x23c, PIN_INPUT, 0) /* (A21) MMC1_CMD */
> @@ -362,3 +378,11 @@ cpsw3g_phy0: ethernet-phy@0 {
>  		ti,min-output-impedance;
>  	};
>  };
> +
> +&sdhci0 {
> +	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&main_mmc0_pins_default>;
> +	ti,driver-strength-ohm = <50>;
> +	disable-wp;
> +};
> -- 
> 2.25.1
> 

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D