linux-kernel - Re: [PATCH 5/9] dt-bindings: mmc: sdhci-of-dwcmhsc: Allow use of a power-domain

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Message-ID: <20250519-vision-mummify-dce8d0c6b5f9@spud>
Date: Mon, 19 May 2025 18:26:29 +0100
From: Conor Dooley <conor@...nel.org>
To: Jonas Karlman <jonas@...boo.se>
Cc: Heiko Stuebner <heiko@...ech.de>, Ulf Hansson <ulf.hansson@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jisheng Zhang <jszhang@...nel.org>, Yao Zi <ziyao@...root.org>,
	Chukun Pan <amadeus@....edu.cn>, linux-rockchip@...ts.infradead.org,
	linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/9] dt-bindings: mmc: sdhci-of-dwcmhsc: Allow use of a
 power-domain

On Mon, May 19, 2025 at 07:03:37PM +0200, Jonas Karlman wrote:
> Hi Conor,
> 
> On 2025-05-19 18:12, Conor Dooley wrote:
> > On Sun, May 18, 2025 at 10:06:52PM +0000, Jonas Karlman wrote:
> >> The commit 7e856617a1f3 ("dt-bindings: mmc: Add support for rk3576
> >> eMMC") limited use of power-domains to Rockchip RK3576.
> >>
> >> Remove the power-domains: false to allow use of power-domains with more
> >> controllers, e.g. with SDHCI on Rockchip RK3528.
> > 
> > Meanwhile, you're allowing it for all devices, even ones where it is not
> > valid. I'm not keen on that.
> 
> All Rockchip variants technically belong to a power-domain, not just the
> RK3576. E.g. for RK3588 a PD_NVM0 domain (not described in DT), for
> RK3568 a VD_LOGIC ALIVE / BIU_SECURE_FLASH idle-only domain, and as
> shown in this series for the RK3528 the PD_VPU idle-only domain.

If they all do, that's fine.
Acked-by: Conor Dooley <conor.dooley@...rochip.com>

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