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([2a10:a5c0:800d:dd00:8fdf:935a:2c85:d703]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-326c33b7fe3sm22411401fa.24.2025.05.15.01.54.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 May 2025 01:54:18 -0700 (PDT) Message-ID: Date: Thu, 15 May 2025 11:54:17 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/9] arm64: dts: imx8mn-bsh-smm-s2-common: Leave regulator under hw state machine To: Dario Binacchi , linux-kernel@vger.kernel.org Cc: Simon Holesch , Karthikdatt Anantharamrao , michael@amarulasolutions.com, linux-amarula@amarulasolutions.com, Wolfgang Birkner , Conor Dooley , Fabio Estevam , Krzysztof Kozlowski , Pengutronix Kernel Team , Rob Herring , Sascha Hauer , Shawn Guo , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org References: <20250514082507.1983849-1-dario.binacchi@amarulasolutions.com> <20250514082507.1983849-3-dario.binacchi@amarulasolutions.com> Content-Language: en-US, en-AU, en-GB, en-BW From: Matti Vaittinen In-Reply-To: <20250514082507.1983849-3-dario.binacchi@amarulasolutions.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250515_095422_382261_36A57966 X-CRM114-Status: GOOD ( 13.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 14/05/2025 11:24, Dario Binacchi wrote: > From: Michael Trimarchi > > Let regulator to be controlled by hardware state machine. Is it possible to add a note _why_ these regulators must be controlled by the state machine and not by the software? > > Signed-off-by: Michael Trimarchi > Signed-off-by: Dario Binacchi > --- > > arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi > index 5a1ec2f6a552..0d343ffdb7f9 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi > @@ -144,6 +144,7 @@ buck4_reg: BUCK4 { > regulator-max-microvolt = <3300000>; > regulator-boot-on; > regulator-always-on; > + rohm,no-regulator-enable-control; > }; > > buck5_reg: BUCK5 { > @@ -153,6 +154,7 @@ buck5_reg: BUCK5 { > regulator-max-microvolt = <1995000>; > regulator-boot-on; > regulator-always-on; > + rohm,no-regulator-enable-control; > }; > > buck6_reg: BUCK6 { > @@ -162,6 +164,7 @@ buck6_reg: BUCK6 { > regulator-max-microvolt = <1400000>; > regulator-boot-on; > regulator-always-on; > + rohm,no-regulator-enable-control; > }; > > ldo1_reg: LDO1 { Yours, -- Matti