linux-kernel - Re: [PATCH v2 2/3] arm64: dts: rockchip: remove vcc_3v3

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Message-ID: <7988840.GXAFRqVoOG@phil>
Date: Sun, 24 Aug 2025 08:41:28 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Chukun Pan <amadeus@....edu.cn>, FUKAUMI Naoki <naoki@...xa.com>
Cc: conor+dt@...nel.org, devicetree@...r.kernel.org, krzk+dt@...nel.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-rockchip@...ts.infradead.org
Subject:
 Re: [PATCH v2 2/3] arm64: dts: rockchip: remove vcc_3v3_pmu regulator for
 Radxa E52C

Am Mittwoch, 20. August 2025, 04:10:24 Mitteleuropäische Sommerzeit schrieb FUKAUMI Naoki:
> Hi Chukun,
> 
> On 8/19/25 22:40, Chukun Pan wrote:
> > Hi,
> > 
> >> How about the following instead?
> >>
> >> @@ -538,7 +538,7 @@ regulator-state-mem {
> >> 				};
> >> 			};
> >>
> >> -			vcc_3v3_s3: dcdc-reg8 {
> >> +			vcc_3v3_pmu: vcc_3v3_s3: dcdc-reg8 {
> >> 				regulator-name = "vcc_3v3_s3";
> >> 				regulator-always-on;
> >> 				regulator-boot-on;
> > 
> > On rk356x, the Flash chip is usually powered by VCCIO_FLASH, which
> > is also connected through a 0 ohm resistor, so I didn't write like
> > this. e.g. https://github.com/torvalds/linux/commit/a706a593cb19
> 
> I think it should match the schematic, i.e. it should be "vcc-supply = 
> <&vccio_flash>;".

I very much agree :-) .

Having at least the phandle match the schematics nameing is very helpful
when someone tries to look something up between those two.


Heiko