From patchwork Tue Feb 13 15:56:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francesco Dolcini X-Patchwork-Id: 13555317 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BD8CEC4829A for ; Tue, 13 Feb 2024 15:56:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Uy4zUUtFHYdGg+idyIKJWgRaJnIjGPP2yCpQp94GvjE=; b=KSr4mZMTXbpVn5 sVPH6SbxD5jT30EVXOcKUzFO8/62I0hbpUicODJ4tPLM35+teogYVnT79XmEleB7Zf34+CP5dJzrC NDcE5tRTeNPmWWlXjoBK8M5bwoxwlNtb6CvN35y2vcyqNT4m0HW9/c2BscFBK1QBNEbBnefMilpmQ oxw4buG+ui8ffZ06ISTcs0BCoyVXyXFe1OE49z2ABF9eFaBsbwXmDo4la4HqzVUmAfuUShOKXo76Z 27drUvJ4C26BOrjEZtxDrfkB3SaYW5zs7keygACeDbCxQrooCW21KAvc7DIDk+PJMo+Eq644VVAa/ Tw5/PCdP8KOmIkgjHYlw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZv9C-00000009qgj-3cCP; Tue, 13 Feb 2024 15:56:38 +0000 Received: from mail11.truemail.it ([2001:4b7e:0:8::81]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZv98-00000009qfG-3WIh for linux-arm-kernel@lists.infradead.org; Tue, 13 Feb 2024 15:56:37 +0000 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 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240213_075636_017237_E25BDB37 X-CRM114-Status: GOOD ( 11.14 ) 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 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)"; };