linux-kernel - Re: [PATCH] arm64: dts: ti: k3-j721e-main: Update the speed modes supported and their itap delay values for MMCSD subsystems

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Date:   Fri, 5 Mar 2021 11:03:41 +0530
From:   Aswath Govindraju <a-govindraju@...com>
To:     Nishanth Menon <nm@...com>, Kishon Vijay Abraham I <kishon@...com>
CC:     Vignesh Raghavendra <vigneshr@...com>,
        Lokesh Vutla <lokeshvutla@...com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Faiz Abbas <faiz_abbas@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: ti: k3-j721e-main: Update the speed modes
 supported and their itap delay values for MMCSD subsystems

Hi Nishanth,

On 05/03/21 10:44 am, Nishanth Menon wrote:
> On 10:59-20210301, Kishon Vijay Abraham I wrote:
>> On 25/02/21 6:57 pm, Aswath Govindraju wrote:
>>> According to latest errata of J721e [1], HS400 mode is not supported
>>> in MMCSD0 subsystem (i2024) and SDR104 mode is not supported in MMCSD1/2
>>> subsystems (i2090). Therefore, replace mmc-hs400-1_8v with mmc-hs200-1_8v
>>> in MMCSD0 subsystem and add a sdhci mask to disable SDR104 speed mode.
>>>
>>> Also, update the itap delay values for all the MMCSD subsystems according
>>> the latest J721e data sheet[2]
>>>
>>> [1] - https://www.ti.com/lit/er/sprz455/sprz455.pdf
>>> [2] - https://www.ti.com/lit/ds/symlink/tda4vm.pdf
>>>
>>> Fixes: e6dc10f200da ("arm64: dts: ti: j721e-main: Add SDHCI nodes")
>>> Signed-off-by: Aswath Govindraju <a-govindraju@...com>
>>
>> Reviewed-by: Kishon Vijay Abraham I <kishon@...com>
> 
> 
> In some offline testing, I realized that the patch wont apply cleanly to e6dc10f200da
> 
> cd48ce86a4d0c1ffec86aa46a26da993c9af5f53 might be a better candidate for
> this - I will drop the patch from my queue in the morning, could you
> update the patch with a new rev with appropriate Fixes?
> 

Sorry, I'll send a respin(v2) of this patch after correcting the fixes
tag to,
Fixes: cd48ce86a4d0 ("arm64: dts: ti: k3-j721e-common-proc-board: Add
support for SD card UHS modes")

Thanks,
Aswath