linux-kernel - Re: [PATCHv4 1/3] dt-bindings: mmc: synopsys-dw-mshc: document "altr,sysmgr-syscon"

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Date:   Thu, 29 Sep 2022 16:38:31 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Dinh Nguyen <dinguyen@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     jh80.chung@...sung.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCHv4 1/3] dt-bindings: mmc: synopsys-dw-mshc: document
 "altr,sysmgr-syscon"

On 29/09/2022 16:20, Dinh Nguyen wrote:
>>
>> So this change will not be backwards compatible with existing DTBs. I
>> noticed that patch2 updates the DTS files for the arm64 platforms, but
>> there seems to be some arm32 platforms too. Isn't this going to be a
>> problem?
>>
> 
> The arm32 platforms makes the clk-phase adjustment through the clock 
> driver. There was a discussion when I originally submitted the support 
> for the arm32 platforms, and we landed on going through the clock driver 
> instead of using the MMC driver. The updates to the arm32 platforms can 
> be done after this patch series.

How the update "can be done after"? Didn't you break all boards in- and
out-of-tree?

Best regards,
Krzysztof