From nobody Sun Feb 8 11:40:25 2026 Received: from mail11.truemail.it (mail11.truemail.it [217.194.8.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 807E05F575; Tue, 13 Feb 2024 15:56:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.194.8.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707839797; cv=none; b=a2DHRJopFfduj/exlErDUYhxGKf/ulGygMFf9ujcEGtKRg8VXG2PJTuQHaVmv5wsxXIV1e21i/KuCM2DTFVZzPksSwLegKIzTEQhniSPEAWQ2qT1tp/7RzEAgWa6toy9f1OuJtL7C0VQgkNWSfh4MmdE+Yo6qtxEkrA1R7uwtHY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707839797; c=relaxed/simple; bh=aGW69Re24Ac9DrkEU8cjI1zLJwxtRXil2UUBGGZdN60=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=G83BOYNxN/k/kkR55PyxjiAqDHeCxPTQixTwAQiJItJGOAa+1qBpQ32IsCfJv4PkN6Ys2NkveDig+ryty/azb8YKaLgGX8B+AUyZoHXO3QCWOLoVJh+PCITXiVUkv9/pvDMAG09pAw8/L1BxwxtPLcSKUdz63QsGstDkVKXRM+E= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=dolcini.it; spf=pass smtp.mailfrom=dolcini.it; dkim=pass (2048-bit key) header.d=dolcini.it header.i=@dolcini.it header.b=tGeW53s8; arc=none smtp.client-ip=217.194.8.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=dolcini.it Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=dolcini.it Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=dolcini.it header.i=@dolcini.it header.b="tGeW53s8" Received: from francesco-nb.pivistrello.it (93-49-2-63.ip317.fastwebnet.it [93.49.2.63]) by mail11.truemail.it (Postfix) with ESMTPA id 78721212AD; Tue, 13 Feb 2024 16:56:29 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1707839789; bh=55Mx92Mb4FtSWcKrsXEpSDBFfNUrq19PhogvHS4N8cA=; h=From:To:Subject; b=tGeW53s8bp67QTKN/BG89r80BpPoFc2goaiHNs0EW6LPycV0sJigyHKjUSFsoHfXW PMp+YSAsSCdVGO0VTXCs8t2wRHLB5P+mFYjL0LTp/fEujxOOrkuClwIY8Ypg8IuB+q e1+fJpLVzeApIjY8xcR8hIMx/MslEDO8UX1iEhOiY6EKoUVhA3OAqxc49Li3hagSkb w6a1n04uLnBt8bNZUJGxk1sN5DmORLPy2UMa3dDc4CC53K8LR2uWbUaszmigKmwkIR 1z2rqwFqyFkZxLGNAst8JDxBH5SJMb5orGXp9macBGzFUq7wj4VlcWWs2NoVhcCsjh J0kWoJGRF3fjQ== From: Francesco Dolcini To: Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Francesco Dolcini , 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> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Francesco Dolcini 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 --- arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/d= ts/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 =3D <850000>; - regulator-min-microvolt =3D <850000>; + regulator-min-microvolt =3D <750000>; regulator-name =3D "+VDD_CORE (PMIC BUCK1)"; }; =20 --=20 2.39.2