linux-kernel - Re: [PATCH 2/2] arm64: dts: ti: k3-am654-base-board: Add MMC/SD support

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Message-ID: <f549d2ef-d038-4976-620e-a32c6bd15dbf@ti.com>
Date:   Tue, 11 Dec 2018 11:28:13 +0530
From:   Vignesh R <vigneshr@...com>
To:     Faiz Abbas <faiz_abbas@...com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <mark.rutland@....com>, <nm@...com>, <ulf.hansson@...aro.org>,
        <adrian.hunter@...el.com>, <kishon@...com>, <t-kristo@...com>,
        <robh+dt@...nel.org>, <michal.simek@...inx.com>
Subject: Re: [PATCH 2/2] arm64: dts: ti: k3-am654-base-board: Add MMC/SD
 support


On 07/12/18 2:12 PM, Faiz Abbas wrote:
> On the am654x-evm, sdhci0 node is connected to an eMMC while sdhci1
> is connected to an SD card slot. Add nodes and pinmuxes for the same.
> 
> Signed-off-by: Faiz Abbas <faiz_abbas@...com>
> ---
>  .../arm64/boot/dts/ti/k3-am654-base-board.dts | 46 +++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
> index bd5a0069191d..5dcd16b787eb 100644
> --- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
> @@ -60,6 +60,36 @@
>  			AM65X_IOPAD(0x0070, PIN_INPUT, 5) /* (R25) GPMC0_CSn2.I2C2_SDA */
>  		>;
>  	};
> +
> +	main_mmc0_pins_default: main_mmc0_pins_default {


make dtbs W=12 will warn you:
Character '_' not recommended in node name


> +		pinctrl-single,pins = <
> +			AM65X_IOPAD(0x01a8, PIN_INPUT_PULLDOWN, 0) /* (B25) MMC0_CLK */
> +			AM65X_IOPAD(0x01ac, PIN_INPUT_PULLUP, 0) /* (B27) MMC0_CMD */
> +			AM65X_IOPAD(0x01a4, PIN_INPUT_PULLUP, 0) /* (A26) MMC0_DAT0 */
> +			AM65X_IOPAD(0x01a0, PIN_INPUT_PULLUP, 0) /* (E25) MMC0_DAT1 */
> +			AM65X_IOPAD(0x019c, PIN_INPUT_PULLUP, 0) /* (C26) MMC0_DAT2 */
> +			AM65X_IOPAD(0x0198, PIN_INPUT_PULLUP, 0) /* (A25) MMC0_DAT3 */
> +			AM65X_IOPAD(0x0194, PIN_INPUT_PULLUP, 0) /* (E24) MMC0_DAT4 */
> +			AM65X_IOPAD(0x0190, PIN_INPUT_PULLUP, 0) /* (A24) MMC0_DAT5 */
> +			AM65X_IOPAD(0x018c, PIN_INPUT_PULLUP, 0) /* (B26) MMC0_DAT6 */
> +			AM65X_IOPAD(0x0188, PIN_INPUT_PULLUP, 0) /* (D25) MMC0_DAT7 */
> +			AM65X_IOPAD(0x01b4, PIN_INPUT_PULLUP, 0) /* (A23) MMC0_SDCD */
> +			AM65X_IOPAD(0x01b0, PIN_INPUT, 0) /* (C25) MMC0_DS */
> +		>;
> +	};
> +
> +	main_mmc1_pins_default: main_mmc1_pins_default {

Same here

Regards
Vignesh

> +		pinctrl-single,pins = <
> +			AM65X_IOPAD(0x02d4, PIN_INPUT_PULLDOWN, 0) /* (C27) MMC1_CLK */
> +			AM65X_IOPAD(0x02d8, PIN_INPUT_PULLUP, 0) /* (C28) MMC1_CMD */
> +			AM65X_IOPAD(0x02d0, PIN_INPUT_PULLUP, 0) /* (D28) MMC1_DAT0 */
> +			AM65X_IOPAD(0x02cc, PIN_INPUT_PULLUP, 0) /* (E27) MMC1_DAT1 */
> +			AM65X_IOPAD(0x02c8, PIN_INPUT_PULLUP, 0) /* (D26) MMC1_DAT2 */
> +			AM65X_IOPAD(0x02c4, PIN_INPUT_PULLUP, 0) /* (D27) MMC1_DAT3 */
> +			AM65X_IOPAD(0x02dc, PIN_INPUT_PULLUP, 0) /* (B24) MMC1_SDCD */
> +			AM65X_IOPAD(0x02e0, PIN_INPUT, 0) /* (C24) MMC1_SDWP */
> +		>;
> +	};
>  };
>  
>  &main_pmx1 {
> @@ -125,3 +155,19 @@
>  	pinctrl-0 = <&main_i2c2_pins_default>;
>  	clock-frequency = <400000>;
>  };
> +
> +&sdhci0 {
> +	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&main_mmc0_pins_default>;
> +	bus-width = <8>;
> +	non-removable;
> +	ti,driver-strength-ohm = <50>;
> +};
> +
> +&sdhci1 {
> +	status = "okay";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&main_mmc1_pins_default>;
> +	ti,driver-strength-ohm = <50>;
> +};
> 

-- 
Regards
Vignesh