linux-kernel - Re: [PATCH v2] arm64: dts: ti: k3-am65: Add support for UHS-I modes in MMCSD1 subsystem

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Date:   Tue, 11 May 2021 11:33:57 -0500
From:   Nishanth Menon <nm@...com>
To:     Jan Kiszka <jan.kiszka@...mens.com>
CC:     Aswath Govindraju <a-govindraju@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Lokesh Vutla <lokeshvutla@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] arm64: dts: ti: k3-am65: Add support for UHS-I modes
 in MMCSD1 subsystem

On 17:26-20210511, Jan Kiszka wrote:
[...]
> >>> +&sdhci1 {
> >>> +	no-1-8-v;
> >>> +};
> >>> +
> >>
> >> Let's move that to k3-am65-iot2050-common.dtsi, to avoid repeating
> >> yourself. There is already a sdhci1 extension.
> >>
> > 
> > The reason why I added these tags in board dts and not in the common
> > dtsi is because if it was added in the common board then for all the iot
> > boards this will be applicable and in future if a different version of
> > iot boards use S.R. 2.0 then we might have to change it again.
> 
> Yes, we will have to take care of the split-up for SR2.0-based variants.
> I didn't have the chance study their DTs yet but I strongly suspect that
> there will be more differences. Then we may add some
> k3-am65-iot2050-common-{SR1,SR2}.dtsi.
> 
> So, I would not try to refactor when not all variables are on the table yet.


I agree with Jan. lets bring it in the current common.dtsi and see the
sr2 introduction separately.

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