linux-kernel - Re: [PATCH v3 1/2] arm64: dts: ti: k3-am62p/j722s: Remove HS400 support from common

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Message-ID: <ce6f03fe-8d97-4146-964f-c2ba58a350c7@ti.com>
Date: Mon, 8 Sep 2025 18:53:57 -0500
From: Andrew Davis <afd@...com>
To: Judith Mendez <jm@...com>, Nishanth Menon <nm@...com>
CC: Moteen Shah <m-shah@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero
 Kristo <kristo@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof
 Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/2] arm64: dts: ti: k3-am62p/j722s: Remove HS400
 support from common

On 9/8/25 6:52 PM, Judith Mendez wrote:
> Since eMMC HS400 has been descoped for J722s due to errata i2478 [0]
> and is supported for AM62Px device, remove eMMC HS400 support from
> common-main.dtsi and include only in am62p-main.dtsi.
> 
> [0] https://www.ti.com/lit/pdf/sprz575
> Signed-off-by: Judith Mendez <jm@...com>
> ---

Reviewed-by: Andrew Davis <afd@...com>

>   arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi | 3 ---
>   arch/arm64/boot/dts/ti/k3-am62p-main.dtsi              | 6 ++++++
>   2 files changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi
> index 4427b12058a6..0c05bcf1d776 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi
> @@ -576,15 +576,12 @@ sdhci0: mmc@...0000 {
>   		bus-width = <8>;
>   		mmc-ddr-1_8v;
>   		mmc-hs200-1_8v;
> -		mmc-hs400-1_8v;
>   		ti,clkbuf-sel = <0x7>;
> -		ti,strobe-sel = <0x77>;
>   		ti,trm-icp = <0x8>;
>   		ti,otap-del-sel-legacy = <0x1>;
>   		ti,otap-del-sel-mmc-hs = <0x1>;
>   		ti,otap-del-sel-ddr52 = <0x6>;
>   		ti,otap-del-sel-hs200 = <0x8>;
> -		ti,otap-del-sel-hs400 = <0x5>;
>   		ti,itap-del-sel-legacy = <0x10>;
>   		ti,itap-del-sel-mmc-hs = <0xa>;
>   		ti,itap-del-sel-ddr52 = <0x3>;
> diff --git a/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
> index 6aea9d3f134e..020bd121a6a3 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
> @@ -74,3 +74,9 @@ &main_gpio1 {
>   	gpio-reserved-ranges = <32 10>;
>   	ti,ngpio = <52>;
>   };
> +
> +&sdhci0 {
> +	mmc-hs400-1_8v;
> +	ti,strobe-sel = <0x77>;
> +	ti,otap-del-sel-hs400 = <0x5>;
> +};