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Thu, 5 Nov 2026 03:20:47 +0100 From: Kaiwen Zhang Date: Thu, 5 Nov 2026 10:20:26 +0800 Subject: [PATCH 1/2] arm64: dts: imx8mn-bsh-smm-s2/pro: Adjust CPU thermal trip points X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20261105-b4-bsh-s2-dts-v1-1-8586d0ba44dc@cn.bosch.com> References: <20261105-b4-bsh-s2-dts-v1-0-8586d0ba44dc@cn.bosch.com> In-Reply-To: <20261105-b4-bsh-s2-dts-v1-0-8586d0ba44dc@cn.bosch.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam CC: , , , , Kaiwen Zhang , HaoNing Cheng X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1793845230; l=1182; i=kaiwen.zhang@cn.bosch.com; s=20261103; h=from:subject:message-id; bh=QW9Y1E93bHYSLn++9I+JurZGav0Kwvfr3Ofa5JBEs+Q=; b=skd1Fo2IjS15Yrfr5ZJNphBReGcfZg3ct6cER/knzNL5EohkB/7oNteuHwTlXlsjAgR0G1Vor ZctgeTdry/2DFj0qiAjQqQqBY7nQjd1ozocZ2lRWzmu6U0PdRsj2I4+ X-Developer-Key: i=kaiwen.zhang@cn.bosch.com; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: grwCDmXUZG+8fazGJ1JoPYIXYPo2s6zF+A4cIJKMSiaX5vwP6WZvS3v8nSD8cQUs3MfqG7RQJ2elZzpaC6r8f7ydtYxzwGdLPrYVfkQ1D0EOSBnYoekDb0x2cNT32GCEF1ktBCxSz7cha/Uh8uE/Psafk/8EYgGrg4XQDA0XO2ZrLAZH5v6PZDUQcPLmk8AOIqcKRqIwQDh5VG5V9IWvzU9jg/1tkawehj/k8MWBIhULyGLCpRUcVGGg8NEVl2kd86i/K/JpW9+C146eCmxf8ZivsXswZNC2X/O9Omq2aUAJ/vE1JWwEfj8hB8HannUf8t+T/Y4h3mMZOatVIgxGKyA3Fopj+OfP3Oole6WhU2FmjtbuZCH3kNc1wSt1+2cAY4g8JlPQuKL9rdh3QnKyheJaYyixOLD6AYwz0OwEoVMW2uorj3m+FGRwReSuMnGJ X-OriginatorOrg: cn.bosch.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Nov 2026 02:21:02.0015 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ebbdfa72-8350-4cf4-3879-08df3ae37001 X-MS-Exchange-CrossTenant-Id: 0ae51e19-07c8-4e4b-bb6d-648ee58410f4 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=0ae51e19-07c8-4e4b-bb6d-648ee58410f4;Ip=[139.15.153.206];Helo=[eop.bosch-org.com] X-MS-Exchange-CrossTenant-AuthSource: DB1PEPF000509E6.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU2PR10MB7882 Hardware thermal qualification of the BSH SMM S2/pro board shows that the existing CPU thermal trip points trigger throttling too early during peak operation. Raise the passive trip temperature from 85 to 101 degrees Celsius and its hysteresis from 2 to 9 degrees Celsius. Raise the critical trip temperature from 95 to 107 degrees Celsius to match the qualified thermal limits. Signed-off-by: HaoNing Cheng Signed-off-by: Kaiwen Zhang --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi | 9 +++++++++ 1 file changed, 9 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 d20393c2d901..638e2417d74d 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 @@ -425,3 +425,12 @@ MX8MN_IOMUXC_SPDIF_RX_GPIO5_IO4 0x0d6 /* I2S_CLK - W= IFI_GPIO_6 */ >; }; }; + +&cpu_alert0 { + temperature =3D <101000>; + hysteresis =3D <9000>; +}; + +&cpu_crit0 { + temperature =3D <107000>; +}; --=20 2.34.1 From nobody Thu Nov 5 05:12:54 2026 Authentication-Results: smtp.subspace.kernel.org; arc=pass header.oldest-pass=0 smtp.remote-ip=52.101.65.3 ARC-Seal: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=pass; t=1793845267; b=oiegw2G3Pkhd793JGwBoeOoeYmVM8Yi2HCo7OZpDkVbsWRxo/pHOvaqmu30uWykGaHGU YfaauigyOIm1D3CbS4N9d3tA4UgbgSOjA+P+6/8NktcXnIABj++9EhcUG8622e+i45246 Ykx1tVcjwpMSMFbeMtREYpQn0GPR8SQKHMLghhRYH/DqvKvvHfYpjbKuQACDDi95CPlTQ uK+mOHFmClPvq1KWl2bh7YwOZ14sCWpqZWPHP+UNVUZM6fsKWeaLtom0Kjf1X7/TGWV/U 7DWPUTCh4zesbmPwTufO8cH83A7Mr+QVK+QuLag61+z/Zi/iMqJsFXv8qZcpphqq8mA== ARC-Message-Signature: i=2; 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Thu, 5 Nov 2026 03:20:51 +0100 From: Kaiwen Zhang Date: Thu, 5 Nov 2026 10:20:27 +0800 Subject: [PATCH 2/2] arm64: dts: imx8mn-bsh-smm-s2/pro: Increase backlight PWM frequency X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20261105-b4-bsh-s2-dts-v1-2-8586d0ba44dc@cn.bosch.com> References: <20261105-b4-bsh-s2-dts-v1-0-8586d0ba44dc@cn.bosch.com> In-Reply-To: <20261105-b4-bsh-s2-dts-v1-0-8586d0ba44dc@cn.bosch.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam CC: , , , , Kaiwen Zhang , Jihu Si X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1793845230; l=971; i=kaiwen.zhang@cn.bosch.com; s=20261103; h=from:subject:message-id; bh=hVaoYLwv7M8JqhuM7fE+iGx/CDnORN3k/zcYeb1Zs08=; b=ODcdJHr+zIvsZhEvUHm008uTwTuprimigyLobX4iby1bo9SG5SgXl3CshrKZd2PaW4rheLVOB quRDfubztU6C4JPkFuMImW4/5DhfOFxh30wA/sVPmkOs35w4jkLHWyV X-Developer-Key: i=kaiwen.zhang@cn.bosch.com; 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Signed-off-by: Jihu Si Signed-off-by: Kaiwen Zhang --- arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi b= /arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi index 98dec3c42060..75aa71bebf4f 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-display.dtsi @@ -34,7 +34,7 @@ framebuffer-panel0 { =20 backlight: backlight { compatible =3D "pwm-backlight"; - pwms =3D <&pwm1 0 700000 0>; /* 700000 ns =3D 1337Hz */ + pwms =3D <&pwm1 0 500000 0>; /* 500000 ns =3D 2000Hz */ brightness-levels =3D <0 100>; num-interpolated-steps =3D <100>; default-brightness-level =3D <50>; --=20 2.34.1