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

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Date:   Thu, 29 Jun 2023 10:59:51 +0530
From:   Bhavya Kapoor <b-kapoor@...com>
To:     Nishanth Menon <nm@...com>, "Kumar, Udit" <u-kumar1@...com>
CC:     <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 28/06/23 16:29, Nishanth Menon wrote:
> 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.
There is no changes in tap delay values .
>>>   	};
>>>   	main_navss: bus@...00000 {
> --
> Regards,
> Nishanth Menon