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

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Message-ID: <0318E801E3D6726D+65c4f189-4e22-4a9b-83d7-cbb0816df373@radxa.com>
Date: Wed, 20 Aug 2025 11:10:24 +0900
From: FUKAUMI Naoki <naoki@...xa.com>
To: Chukun Pan <amadeus@....edu.cn>
Cc: conor+dt@...nel.org, devicetree@...r.kernel.org, heiko@...ech.de,
 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

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>;".

Best regards,

--
FUKAUMI Naoki
Radxa Computer (Shenzhen) Co., Ltd.

> Thanks,
> Chukun
> 
> --
> 2.25.1
> 
> 
>