From 8576126c7ccf632c8edeeb69f57f17ee5e125de5 Mon Sep 17 00:00:00 2001 From: Stefano Radaelli Date: Mon, 6 Jul 2026 11:34:40 +0200 Subject: [PATCH] arm64: dts: imx8mn-var-som-symphony: Add TPM2 support Add support for the TPM2 device on the VAR-SOM Symphony carrier board. The ST33K TPM2 is connected over I2C, and A PCA6408 GPIO expander is used to control the reset signal required to release the TPM from reset. Add the PCA6408 GPIO expander and the ST33K TPM2 device node. Signed-off-by: Stefano Radaelli Signed-off-by: Frank Li --- .../boot/dts/freescale/imx8mn-var-som-symphony.dts | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts index 53130b521b5b..7d016ed5e911 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts +++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts @@ -160,6 +160,20 @@ }; &i2c3 { + pca6408: gpio@21 { + compatible = "nxp,pcal6408"; + reg = <0x21>; + gpio-controller; + #gpio-cells = <2>; + }; + + st33ktpm2xi2c: tpm@2e { + compatible = "st,st33ktpm2xi2c", "tcg,tpm-tis-i2c"; + reg = <0x2e>; + label = "tpm"; + reset-gpios = <&pca6408 4 GPIO_ACTIVE_LOW>; + }; + /* Capacitive touch controller */ ft5x06_ts: touchscreen@38 { compatible = "edt,edt-ft5406";