linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am68-sk-base-board: Update IO EXP GPIO lines for Rev E2

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Date:   Wed, 15 Mar 2023 08:46:56 -0500
From:   Nishanth Menon <nm@...com>
To:     Sinthu Raja <sinthu.raja@...tralsolutions.com>
CC:     Tero Kristo <kristo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Sinthu Raja <sinthu.raja@...com>
Subject: Re: [PATCH] arm64: dts: ti: k3-am68-sk-base-board: Update IO EXP
 GPIO lines for Rev E2

On 17:39-20230315, Sinthu Raja wrote:
> From: Sinthu Raja <sinthu.raja@...com>
> 
> Rev E2 of the AM68 SK baseboard has updated the GPIO IO expander pins
> functionality. To match the Rev E2 schematics, update existing IO expander
> GPIO line names and the corresponding node which uses the expansion(exp1)
> node.
> 
> Signed-off-by: Sinthu Raja <sinthu.raja@...com>
> ---
> 
> Schematics Ref: https://www.ti.com/lit/zip/sprr463

Looking at https://www.ti.com/tool/SK-AM68 looks like E1 never hit
production, is that correct?

Does this need a "Fixes" tag?

> 
>  arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> index 2091cd2431fb..27a43a8ecffd 100644
> --- a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> @@ -60,7 +60,7 @@ vdd_mmc1: regulator-sd {
>  		regulator-boot-on;
>  		enable-active-high;
>  		vin-supply = <&vsys_3v3>;
> -		gpio = <&exp1 10 GPIO_ACTIVE_HIGH>;
> +		gpio = <&exp1 8 GPIO_ACTIVE_HIGH>;
>  	};
>  
>  	vdd_sd_dv: regulator-tlv71033 {
> @@ -264,12 +264,10 @@ exp1: gpio@21 {
>  		reg = <0x21>;
>  		gpio-controller;
>  		#gpio-cells = <2>;
> -		gpio-line-names = "CSI_VIO_SEL", "CSI_SEL_FPC_EXPn", "HDMI_PDn",
> -					"HDMI_LS_OE", "DP0_3V3 _EN", "BOARDID_EEPROM_WP",
> -					"CAN_STB", " ", "GPIO_uSD_PWR_EN", "eDP_ENABLE",
> -					"IO_EXP_PCIe1_M.2_RTSz", "IO_EXP_MCU_RGMII_RSTz",
> -					"IO_EXP_CSI2_EXP_RSTz", " ", "CSI0_B_GPIO1",
> -					"CSI1_B_GPIO1";
> +		gpio-line-names = " ", " ", " ", " ", " ",
> +				  "BOARDID_EEPROM_WP", "CAN_STB", " ",
> +				  "GPIO_uSD_PWR_EN", " ", "IO_EXP_PCIe1_M.2_RTSz",
> +				  "IO_EXP_MCU_RGMII_RST#", " ", " ", " ", " ";
>  	};
>  };
>  
> -- 
> 2.36.1
> 

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