linux-kernel - Re: [PATCH 0/4] pmdomain: renesas: rcar-sysc: Cleanups and R-Car M3-W quirk handling

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Date: Thu, 18 Apr 2024 00:17:44 +0000
From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: Ulf Hansson <ulf.hansson@...aro.org>,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] pmdomain: renesas: rcar-sysc: Cleanups and R-Car M3-W quirk handling


Hi Geert

Thank you for the patch

> According to the hardware team, R-Car H3 ES1.0 and R-Car M3-W have a
> rare quirk where powering down the A3IR, A3VC, and A3VP power domains
> requires an extra delay of 1 µs.  So far upstream never handled that,
> but the BSP has a fix[1].  As support for R-Car H3 ES1.x was dropped in
> v6.4, only R-Car M3-W still needs to be handled.
> 
> The BSP fix relies on hard-coded string comparisons of power domain
> names, and thus applies to all R-Car Gen3 SoCs (many introduced after
> the original fix was written) having domains with a matching name,
> whether they are affected or not.  Hence I took the opportunity to
> refactor the R-Car SYSC driver first, and came up with a less-intrusive
> fix.

For all patches

Reviewed-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>


Thank you for your help !!

Best regards
---
Renesas Electronics
Ph.D. Kuninori Morimoto