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charset="utf-8" From: Michael Trimarchi Voltage threshold should be adjust according to the worst case. Signed-off-by: Michael Trimarchi Signed-off-by: Dario Binacchi --- .../boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 11 +++++++++++ 1 file changed, 11 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 bbb07c650da9..5a1ec2f6a552 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 @@ -105,6 +105,12 @@ buck1_reg: BUCK1 { regulator-boot-on; regulator-always-on; regulator-ramp-delay =3D <1250>; + + /* enable autosuspend threshold */ + rohm,dvs-run-voltage =3D <850000>; + rohm,dvs-idle-voltage =3D <850000>; + rohm,dvs-suspend-voltage =3D <850000>; + rohm,no-regulator-enable-control; }; =20 buck2_reg: BUCK2 { @@ -115,6 +121,11 @@ buck2_reg: BUCK2 { regulator-boot-on; regulator-always-on; regulator-ramp-delay =3D <1250>; + + /* enable autosuspend threshold */ + rohm,dvs-run-voltage =3D <960000>; + rohm,dvs-idle-voltage =3D <860000>; 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charset="utf-8" From: Michael Trimarchi Let regulator to be controlled by hardware state machine. 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 =3D <3300000>; regulator-boot-on; regulator-always-on; + rohm,no-regulator-enable-control; }; =20 buck5_reg: BUCK5 { @@ -153,6 +154,7 @@ buck5_reg: BUCK5 { regulator-max-microvolt =3D <1995000>; regulator-boot-on; regulator-always-on; + rohm,no-regulator-enable-control; }; =20 buck6_reg: BUCK6 { @@ -162,6 +164,7 @@ buck6_reg: BUCK6 { regulator-max-microvolt =3D <1400000>; regulator-boot-on; regulator-always-on; + rohm,no-regulator-enable-control; }; =20 ldo1_reg: LDO1 { --=20 2.43.0 From nobody Sun Feb 8 16:06:21 2026 Received: from mail-wm1-f41.google.com (mail-wm1-f41.google.com [209.85.128.41]) (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 8006E2206B1 for ; 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charset="utf-8" From: Michael Trimarchi Allow the wifi to be enabled during suspend. Use case is needed in most of the devices deployed in the field Signed-off-by: Michael Trimarchi Signed-off-by: Dario Binacchi Reviewed-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 2 ++ 1 file changed, 2 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 0d343ffdb7f9..a983072fb835 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 @@ -277,6 +277,8 @@ &usdhc2 { mmc-pwrseq =3D <&usdhc2_pwrseq>; bus-width =3D <4>; non-removable; + keep-power-in-suspend; + status =3D "okay"; =20 brcmf: bcrmf@1 { --=20 2.43.0 From nobody Sun Feb 8 16:06:21 2026 Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (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 D772C221540 for ; 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charset="utf-8" From: Karthikdatt Anantharamrao GPU is enabled in order to use image processing so it must not depend on display Signed-off-by: Karthikdatt Anantharamrao Signed-off-by: Michael Trimarchi Signed-off-by: Dario Binacchi Reviewed-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 4 ++++ 1 file changed, 4 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 a983072fb835..de70cd3a392f 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 @@ -77,6 +77,10 @@ ethphy0: ethernet-phy@0 { }; }; =20 +&gpu { + status =3D "okay"; +}; + &i2c1 { clock-frequency =3D <400000>; pinctrl-names =3D "default"; --=20 2.43.0 From nobody Sun Feb 8 16:06:21 2026 Received: from mail-wm1-f41.google.com (mail-wm1-f41.google.com [209.85.128.41]) (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 4F56D221F06 for ; 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charset="utf-8" From: Simon Holesch The UART pins are floating, if nothing is connected. This can trigger a Magic SysRq (e.g. reset). Signed-off-by: Simon Holesch Signed-off-by: Dario Binacchi Reviewed-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) 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 de70cd3a392f..fd12b97525d1 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 @@ -386,8 +386,8 @@ MX8MN_IOMUXC_ECSPI1_SS0_UART3_DCE_RTS_B 0x040 =20 pinctrl_uart4: uart4grp { fsl,pins =3D < - MX8MN_IOMUXC_UART4_RXD_UART4_DCE_RX 0x040 - MX8MN_IOMUXC_UART4_TXD_UART4_DCE_TX 0x040 + MX8MN_IOMUXC_UART4_RXD_UART4_DCE_RX 0x140 + MX8MN_IOMUXC_UART4_TXD_UART4_DCE_TX 0x140 >; }; =20 --=20 2.43.0 From nobody Sun Feb 8 16:06:21 2026 Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) (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 BD00B221FC8 for ; 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charset="utf-8" From: Wolfgang Birkner Buck3 is called Buck5 in the BD71847 datasheet. This buck supports 0.55...1.35V. Set the minimum allowed value. Signed-off-by: Wolfgang Birkner Signed-off-by: Dario Binacchi --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 fd12b97525d1..81fa0a8767e2 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 @@ -135,7 +135,7 @@ buck2_reg: BUCK2 { buck3_reg: BUCK3 { /* PMIC_BUCK5 - VDD_DRAM_VPU_GPU */ regulator-name =3D "buck3"; - regulator-min-microvolt =3D <700000>; + regulator-min-microvolt =3D <550000>; regulator-max-microvolt =3D <1350000>; regulator-boot-on; regulator-always-on; --=20 2.43.0 From nobody Sun Feb 8 16:06:21 2026 Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) (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 44DE8222578 for ; 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charset="utf-8" From: Wolfgang Birkner Buck4 is called Buck6 in the BD71847 datasheet. This buck supports 2.6...3.3V. Set the minimum allowed value. Signed-off-by: Wolfgang Birkner Signed-off-by: Dario Binacchi --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 81fa0a8767e2..04112a83b1d3 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 @@ -144,7 +144,7 @@ buck3_reg: BUCK3 { buck4_reg: BUCK4 { /* PMIC_BUCK6 - VDD_3V3 */ regulator-name =3D "buck4"; - regulator-min-microvolt =3D <3000000>; + regulator-min-microvolt =3D <2600000>; regulator-max-microvolt =3D <3300000>; regulator-boot-on; regulator-always-on; --=20 2.43.0 From nobody Sun Feb 8 16:06:21 2026 Received: from mail-wm1-f54.google.com (mail-wm1-f54.google.com [209.85.128.54]) (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 6ED2421C9F0 for ; 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charset="utf-8" From: Wolfgang Birkner Increased drive strength of PMIC IRQ pin to increase reliability on the reference hardware. Signed-off-by: Wolfgang Birkner Signed-off-by: Dario Binacchi Reviewed-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 04112a83b1d3..ea8d741c6904 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 @@ -364,7 +364,7 @@ MX8MN_IOMUXC_I2C4_SDA_I2C4_SDA 0x400000c2 =20 pinctrl_pmic: pmicirqgrp { fsl,pins =3D < - MX8MN_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x040 + MX8MN_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x041 >; }; =20 --=20 2.43.0 From nobody Sun Feb 8 16:06:21 2026 Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) (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 A6846223710 for ; 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Wed, 14 May 2025 01:25:24 -0700 (PDT) Received: from dario-ThinkPad-T14s-Gen-2i.client.m3-hotspots.de ([46.189.28.43]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-442ebda7d2csm30987365e9.3.2025.05.14.01.25.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 May 2025 01:25:23 -0700 (PDT) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: Simon Holesch , Karthikdatt Anantharamrao , michael@amarulasolutions.com, linux-amarula@amarulasolutions.com, Wolfgang Birkner , Dario Binacchi , 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 Subject: [PATCH 9/9] arm64: dts: imx8mn-bsh-smm-s2-common: Disable PMIC SNVS reset target state Date: Wed, 14 May 2025 10:25:03 +0200 Message-ID: <20250514082507.1983849-10-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250514082507.1983849-1-dario.binacchi@amarulasolutions.com> References: <20250514082507.1983849-1-dario.binacchi@amarulasolutions.com> 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: Wolfgang Birkner VDD_DRAM was disabled on standby, therefore the reference hardware did not wake up reliable. Use PMIC reset target state READY instead of SNVS, to keep VDD_DRAM active during standby. Signed-off-by: Wolfgang Birkner Signed-off-by: Dario Binacchi --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 1 - 1 file changed, 1 deletion(-) 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 ea8d741c6904..633874b3bf66 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 @@ -94,7 +94,6 @@ bd71847: pmic@4b { pinctrl-0 =3D <&pinctrl_pmic>; interrupt-parent =3D <&gpio1>; interrupts =3D <3 IRQ_TYPE_LEVEL_LOW>; - rohm,reset-snvs-powered; =20 #clock-cells =3D <0>; clocks =3D <&osc_32k>; --=20 2.43.0