[PATCH v1 4/4] arm64: dts: am62p5-var-som-symphony: add TPM support

[Stefano Radaelli]

Add the ST33KTPM2XI2C TPM device on the Symphony carrier board.

The TPM reset signal is driven through a PCAL6408 GPIO expander, so add
the corresponding GPIO expander node. Configure the RGB_SEL board signal
through a GPIO hog to keep the board in the expected configuration.

Signed-off-by: Stefano Radaelli <stefano.r at variscite.com>
---
 .../dts/ti/k3-am62p5-var-som-symphony.dts     | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-var-som-symphony.dts b/arch/arm64/boot/dts/ti/k3-am62p5-var-som-symphony.dts
index 5c41647ff43f..8fe8ec903d3d 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p5-var-som-symphony.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62p5-var-som-symphony.dts
@@ -293,6 +293,28 @@ &main_i2c1 {
 	clock-frequency = <400000>;
 	status = "okay";
 
+	pcal6408: gpio at 21 {
+		compatible = "nxp,pcal6408";
+		reg = <0x21>;
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		/* RGB_SEL */
+		lvds-brg-enable-hog {
+			gpio-hog;
+			gpios = <7 GPIO_ACTIVE_HIGH>;
+			output-low;
+			line-name = "lvds_brg_en";
+		};
+	};
+
+	st33ktpm2xi2c: tpm at 2e {
+		compatible = "st,st33ktpm2xi2c", "tcg,tpm-tis-i2c";
+		label = "tpm";
+		reg = <0x2e>;
+		reset-gpios = <&pcal6408 4 GPIO_ACTIVE_LOW>;
+	};
+
 	/* Capacitive touch controller */
 	ft5x06_ts: touchscreen at 38 {
 		compatible = "edt,edt-ft5206";
-- 
2.47.3