linux-kernel - Re: [PATCH v2 2/2] arm64: dts: ti: k3-j721e-common-proc-board: add DP to j7 evm

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Date:   Fri, 1 Apr 2022 10:33:17 +0530
From:   Vignesh Raghavendra <vigneshr@...com>
To:     Rahul T R <r-ravikumar@...com>, <nm@...com>
CC:     <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski@...onical.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <tomi.valkeinen@...asonboard.com>,
        <laurent.pinchart@...asonboard.com>, <kishon@...com>
Subject: Re: [PATCH v2 2/2] arm64: dts: ti: k3-j721e-common-proc-board: add DP
 to j7 evm

Hi Rahul,

On 31/03/22 8:00 pm, Rahul T R wrote:
> From: Tomi Valkeinen <tomi.valkeinen@...com>
> 
> Add the endpoint nodes to describe connection from
> DSS => MHDP => DisplayPort connector.
> Also add the phy link node and required pinmux nodes
> for hotplug.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...com>
> Signed-off-by: Rahul T R <r-ravikumar@...com>
> ---
>  .../dts/ti/k3-j721e-common-proc-board.dts     | 78 ++++++++++++++++++-
>  1 file changed, 74 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
> index f5ca8e26ed99..8ddc0d3bd058 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
> @@ -148,6 +148,28 @@
>  		pinctrl-0 = <&main_mcan2_gpio_pins_default>;
>  		standby-gpios = <&main_gpio0 127 GPIO_ACTIVE_HIGH>;
>  	};
> +
> +	dp_pwr_3v3: fixedregulator-dp-prw {

Please use standard node name: regulator-X as per DT spec [1]


[1]
https://github.com/devicetree-org/devicetree-specification/releases/tag/v0.3

> +		compatible = "regulator-fixed";
> +		regulator-name = "dp-pwr";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		gpio = <&exp4 0 0>;	/* P0 - DP0_PWR_SW_EN */

Please use GPIO_ACTIVE_* macros as appropriate.

> +		enable-active-high;
> +	};
> +
[...]