linux-kernel - Re: [PATCH] arm64: dts: freescale: debix-som-a-bmb-08: Add CSI Power Regulators

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Message-ID: <20231021141802.7k6irkkgycp4hek7@pengutronix.de>
Date:   Sat, 21 Oct 2023 16:18:02 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Kieran Bingham <kieran.bingham@...asonboard.com>
Cc:     devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: freescale: debix-som-a-bmb-08: Add CSI Power
 Regulators

Hi Kieran,

thanks for your patch.

On 23-10-21, Kieran Bingham wrote:
> Provide the 1.8 and 3.3 volt regulators that are utilised on the Debix
> SOM BMB-08 base board.
> 
> Facilitate this by also supplying the pin control used to enable the
> regulators on the second MIPI CSI port.
> 
> Signed-off-by: Kieran Bingham <kieran.bingham@...asonboard.com>
> ---
>  .../freescale/imx8mp-debix-som-a-bmb-08.dts   | 56 +++++++++++++++++++
>  1 file changed, 56 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a-bmb-08.dts b/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a-bmb-08.dts
> index 0b0c95432bdc..e058402f1f2e 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a-bmb-08.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-debix-som-a-bmb-08.dts
> @@ -63,6 +63,50 @@ regulator-som-vdd3v3 {
>  		regulator-always-on;
>  	};
>  
> +	reg_csi1_1v8: regulator-csi1-vdd1v8 {
> +		compatible = "regulator-fixed";
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <1800000>;
> +		regulator-name = "CSI1_VDD1V8_SW";

Can we drop the _SW suffix here and below? I like to align the names
with the schematic power-rail names to make it easier to grep.

With that fixed feel free to add my:

Reviewed-by: Marco Felsch <m.felsch@...gutronix.de>

> +		gpio = <&expander0 13 GPIO_ACTIVE_HIGH>;
> +		vin-supply = <&reg_baseboard_vdd3v3>;
> +		enable-active-high;
> +	};
> +
> +	reg_csi1_3v3: regulator-csi1-vdd3v3 {
> +		compatible = "regulator-fixed";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		regulator-name = "CSI1_VDD3V3_SW";
> +		gpio = <&expander0 14 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +		vin-supply = <&reg_vdd5v0>;
> +	};
> +
> +	reg_csi2_1v8: regulator-csi2-vdd1v8 {
> +		compatible = "regulator-fixed";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_reg_csi2_1v8>;
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <1800000>;
> +		regulator-name = "CSI2_VDD1V8_SW";
> +		gpio = <&gpio3 21 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +		vin-supply = <&reg_baseboard_vdd3v3>;
> +	};
> +
> +	reg_csi2_3v3: regulator-csi2-vdd3v3 {
> +		compatible = "regulator-fixed";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_reg_csi2_3v3>;
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		regulator-name = "CSI2_VDD3V3_SW";
> +		gpio = <&gpio4 25 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +		vin-supply = <&reg_vdd5v0>;
> +	};
> +
>  	regulator-vbus-usb20 {
>  		compatible = "regulator-fixed";
>  		regulator-min-microvolt = <5000000>;
> @@ -413,6 +457,18 @@ MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03		0x41
>  		>;
>  	};
>  
> +	pinctrl_reg_csi2_1v8: regcsi21v8grp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SAI5_RXD0__GPIO3_IO21		0x19
> +		>;
> +	};
> +
> +	pinctrl_reg_csi2_3v3: regcsi23v3grp {
> +		fsl,pins = <
> +			MX8MP_IOMUXC_SAI2_TXC__GPIO4_IO25		0x19
> +		>;
> +	};
> +
>  	pinctrl_uart2: uart2grp {
>  		fsl,pins = <
>  			MX8MP_IOMUXC_UART2_RXD__UART2_DCE_RX		0x14f
> -- 
> 2.34.1
> 
>