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arm64: dts: imx8mp-var-som-symphony: add TPM support

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Add the ST33KTPM2XI2C TPM device on the Symphony carrier board.

Enable the I2C4 bus, add the PCAL6408 GPIO expander used by the TPM and
describe the TPM reset line.

Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Stefano Radaelli 2026-06-08 16:41:04 +02:00 committed by Frank Li
parent 9497ab2868
commit 342414b800
1 changed files with 39 additions and 0 deletions
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39
arch/arm64/boot/dts/freescale/imx8mp-var-som-symphony.dts
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@ -116,6 +116,31 @@ typec_dr_sw: endpoint {
};
};
&i2c4 {
clock-frequency = <400000>;
pinctrl-names = "default", "gpio", "sleep";
pinctrl-0 = <&pinctrl_i2c4>;
pinctrl-1 = <&pinctrl_i2c4_gpio>;
pinctrl-2 = <&pinctrl_i2c4_gpio>;
scl-gpios = <&gpio5 20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio5 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
status = "okay";
pcal6408: gpio@21 {
compatible = "nxp,pcal6408";
reg = <0x21>;
#gpio-cells = <2>;
gpio-controller;
};
st33ktpm2xi2c: tpm@2e {
compatible = "st,st33ktpm2xi2c", "tcg,tpm-tis-i2c";
reg = <0x2e>;
label = "tpm";
reset-gpios = <&pcal6408 4 GPIO_ACTIVE_LOW>;
};
};
&snvs_pwrkey {
status = "okay";
};
@ -201,6 +226,20 @@ MX8MP_IOMUXC_I2C3_SDA__GPIO5_IO19 0x400001c2
>;
};
pinctrl_i2c4: i2c4grp {
fsl,pins = <
MX8MP_IOMUXC_I2C4_SCL__I2C4_SCL 0x400001c2
MX8MP_IOMUXC_I2C4_SDA__I2C4_SDA 0x400001c2
>;
};
pinctrl_i2c4_gpio: i2c4gpiogrp {
fsl,pins = <
MX8MP_IOMUXC_I2C4_SCL__GPIO5_IO20 0x400001c2
MX8MP_IOMUXC_I2C4_SDA__GPIO5_IO21 0x400001c2
>;
};
pinctrl_pca9534: pca9534grp {
fsl,pins = <
MX8MP_IOMUXC_GPIO1_IO15__GPIO1_IO15 0xc0