linux-kernel - Re: [PATCH v2] arm64: dts: ti: k3-j721s2-main: Enable support for SDR104 speed mode

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Date:   Wed, 28 Jun 2023 05:59:11 -0500
From:   Nishanth Menon <nm@...com>
To:     "Kumar, Udit" <u-kumar1@...com>
CC:     Bhavya Kapoor <b-kapoor@...com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <robh+dt@...nel.org>,
        <kristo@...nel.org>, <vigneshr@...com>
Subject: Re: [PATCH v2] arm64: dts: ti: k3-j721s2-main: Enable support for
 SDR104 speed mode

On 13:50-20230628, Kumar, Udit wrote:
> 
> On 4/12/2023 5:44 PM, Bhavya Kapoor wrote:
> > According to TRM for J721S2, SDR104 speed mode is supported by the SoC
> > but its capabilities were masked in device tree. Remove sdhci-caps-mask
> > to enable support for SDR104 speed mode for SD card in J721S2 SoC.
> > 
> > [+] Refer to : section 12.3.6.1.1 MMCSD Features, in J721S2 TRM
> > - https://www.ti.com/lit/zip/spruj28
> > 
> > Fixes: b8545f9d3a54 ("arm64: dts: ti: Add initial support for J721S2 SoC")
> > Signed-off-by: Bhavya Kapoor <b-kapoor@...com>
> > ---
> > Changelog v1->v2:
> > 	- Modified Commit Message and Added Fixes tag
> > 
> > Link to v1 : https://lore.kernel.org/all/20230404091245.336732-1-b-kapoor@ti.com/
> > 
> >   arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 2 --
> >   1 file changed, 2 deletions(-)
> > 
> > diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
> > index 8915132efcc1..95c6151ed10c 100644
> > --- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
> > +++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
> > @@ -400,8 +400,6 @@ main_sdhci1: mmc@...0000 {
> >   		ti,clkbuf-sel = <0x7>;
> >   		ti,trm-icp = <0x8>;
> >   		dma-coherent;
> > -		/* Masking support for SDR104 capability */
> > -		sdhci-caps-mask = <0x00000003 0x00000000>;
> 
> 
> Reviewed-by: Udit Kumar <u-kumar1@...com>

Please confirm if there are any changes in *tap-delay attributes.
> 
> >   	};
> >   	main_navss: bus@...00000 {

--
Regards,
Nishanth Menon