linux-kernel - Re: [PATCH v1] arm64: tegra: jetson-tx1: Fix USB_VBUS

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Message-ID: <6e21646a-a687-65b7-cd69-2c15e29e8241@nvidia.com>
Date:   Wed, 18 Nov 2020 11:24:36 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     JC Kuo <jckuo@...dia.com>, <gregkh@...uxfoundation.org>,
        <thierry.reding@...il.com>, <robh+dt@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v1] arm64: tegra: jetson-tx1: Fix USB_VBUS_EN0 regulator


On 18/11/2020 03:46, JC Kuo wrote:
> USB_VBUS_EN0 regulator (regulator@11) is being overwritten by vdd-cam-1v2
> regulator. This commit rearrange USB_VBUS_EN0 to be regulator@14.
> 
> Signed-off-by: JC Kuo <jckuo@...dia.com>
> ---
>  .../arm64/boot/dts/nvidia/tegra210-p2597.dtsi | 20 +++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
> index e18e1a9a3011..a9caaf7c0d67 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
> @@ -1663,16 +1663,6 @@ vdd_usb_vbus: regulator@9 {
>  		vin-supply = <&vdd_5v0_sys>;
>  	};
>  
> -	vdd_usb_vbus_otg: regulator@11 {
> -		compatible = "regulator-fixed";
> -		regulator-name = "USB_VBUS_EN0";
> -		regulator-min-microvolt = <5000000>;
> -		regulator-max-microvolt = <5000000>;
> -		gpio = <&gpio TEGRA_GPIO(CC, 4) GPIO_ACTIVE_HIGH>;
> -		enable-active-high;
> -		vin-supply = <&vdd_5v0_sys>;
> -	};
> -
>  	vdd_hdmi: regulator@10 {
>  		compatible = "regulator-fixed";
>  		regulator-name = "VDD_HDMI_5V0";
> @@ -1712,4 +1702,14 @@ vdd_cam_1v8: regulator@13 {
>  		enable-active-high;
>  		vin-supply = <&vdd_3v3_sys>;
>  	};
> +
> +	vdd_usb_vbus_otg: regulator@14 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "USB_VBUS_EN0";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		gpio = <&gpio TEGRA_GPIO(CC, 4) GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +		vin-supply = <&vdd_5v0_sys>;
> +	};
>  };
> 

Thanks for catching this! We should add the 'Fixes:' tag.

By the way, I assume that VBUS is currently broken for the OTG port.
Without this change is that USB port completely broken? I am wondering
if we need to CC stable@...r.kernel.org on this.

Reviewed-by: Jon Hunter <jonathanh@...dia.com>

Cheers
Jon

-- 
nvpublic