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[2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id d14-20020a170903230e00b001d8d5bd2853si2282931plh.30.2024.02.13.07.57.25 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Feb 2024 07:57:25 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-63844-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; dkim=pass header.i=@dolcini.it header.s=default header.b=tGeW53s8; arc=pass (i=1 spf=pass spfdomain=dolcini.it dkim=pass dkdomain=dolcini.it dmarc=pass fromdomain=dolcini.it); spf=pass (google.com: domain of linux-kernel+bounces-63844-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-63844-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=dolcini.it Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 7D3AE284AEF for ; Tue, 13 Feb 2024 15:57:25 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 0390D5FDB5; Tue, 13 Feb 2024 15:56:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=dolcini.it header.i=@dolcini.it header.b="tGeW53s8" 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 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 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790799874192055971 X-GMAIL-MSGID: 1790799874192055971 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/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)"; };