| Message ID | 20240213155622.18309-1-francesco@dolcini.it |
|---|---|
| State | New |
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From: Francesco Dolcini <francesco@dolcini.it>
To: Nishanth Menon <nm@ti.com>,
Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: Francesco Dolcini <francesco.dolcini@toradex.com>,
linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v1] arm64: dts: ti: verdin-am62: Set VDD CORE minimum voltage
to 0.75V
Date: Tue, 13 Feb 2024 16:56:22 +0100
Message-Id: <20240213155622.18309-1-francesco@dolcini.it>
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| Series |
[v1] arm64: dts: ti: verdin-am62: Set VDD CORE minimum voltage to 0.75V
|
|
Commit Message
Francesco Dolcini
Feb. 13, 2024, 3:56 p.m. UTC
From: Francesco Dolcini <francesco.dolcini@toradex.com> Set VDD_CORE minimum voltage to 0.75V, TI AM62 can run at either 0.75V or 0.85V depending on the actual speed grade and on the maximum configured speed (1.4GHz frequency requires 0.85V). The actual value is programmed into the PMIC EEPROM during manufacturing (according to the SOC speed grade) and this ensure that both the voltage values are valid and therefore the OS will not overwrite the value programmed into the PMIC. Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> --- arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Comments
Hi Francesco Dolcini, On Tue, 13 Feb 2024 16:56:22 +0100, Francesco Dolcini wrote: > Set VDD_CORE minimum voltage to 0.75V, TI AM62 can run at either 0.75V > or 0.85V depending on the actual speed grade and on the maximum > configured speed (1.4GHz frequency requires 0.85V). > > The actual value is programmed into the PMIC EEPROM during manufacturing > (according to the SOC speed grade) and this ensure that both the voltage > values are valid and therefore the OS will not overwrite the value > programmed into the PMIC. > > [...] I have applied the following to branch ti-k3-dts-next on [1]. Thank you! [1/1] arm64: dts: ti: verdin-am62: Set VDD CORE minimum voltage to 0.75V commit: 2af8358ad64fb4bf012a6dc2917fbfc78a2093b2 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent up the chain during the next merge window (or sooner if it is a relevant bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. [1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git -- Vignesh
diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi index 6a06724b6d16..4129566172a2 100644 --- a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi @@ -1118,7 +1118,7 @@ reg_vdd_core: buck1 { regulator-always-on; regulator-boot-on; regulator-max-microvolt = <850000>; - regulator-min-microvolt = <850000>; + regulator-min-microvolt = <750000>; regulator-name = "+VDD_CORE (PMIC BUCK1)"; };