linux-kernel - Re: [PATCH AUTOSEL 6.2 07/16] clk: renesas: rcar-gen3: Disable R-Car H3 ES1.*

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Date:   Tue, 14 Mar 2023 13:42:09 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        mturquette@...libre.com, sboyd@...nel.org,
        linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 6.2 07/16] clk: renesas: rcar-gen3: Disable R-Car
 H3 ES1.*

On Sun, Mar 05, 2023 at 02:59:11PM +0100, Geert Uytterhoeven wrote:
>Hi Sasha,
>
>On Sun, Mar 5, 2023 at 2:52 PM Sasha Levin <sashal@...nel.org> wrote:
>> From: Wolfram Sang <wsa+renesas@...g-engineering.com>
>>
>> [ Upstream commit b1dec4e78599a2ce5bf8557056cd6dd72e1096b0 ]
>>
>> R-Car H3 ES1.* was only available to an internal development group and
>> needed a lot of quirks and workarounds. These become a maintenance
>> burden now, so our development group decided to remove upstream support
>> for this SoC. Public users only have ES2 onwards.
>>
>> In addition to the ES1 specific removals, a check for it was added
>> preventing the machine to boot further. It may otherwise inherit wrong
>> clock settings from ES2 which could damage the hardware.
>>
>> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
>> Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
>> Link: https://lore.kernel.org/r/20230202092332.2504-1-wsa+renesas@sang-engineering.com
>> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>
>This patch disables hardware support.  Do we really want to backport
>that to stable?
>Perhaps backporting to v6.2.y and v6.1.y is still acceptable (the next
>Renesas BSP will be based on v6.1.y LTS), but I would not recommend
>backporting to older versions.

Ack, I'll drop it from older trees. Thanks!

-- 
Thanks,
Sasha