[PATCH] arm: dts: imx8mm-venice-gw73xx: add TPM device

Tim Harvey tharvey at gateworks.com
Wed Oct 18 20:33:38 CEST 2023


Add the TPM device found on the GW73xx revision F PCB.

This hangs off of SPI2, uses gpio1_10 as a CS and gpio1_11 as RST#.

Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
 arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi |  7 +++++++
 arch/arm/dts/imx8mm-venice-gw73xx.dtsi           | 10 +++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi b/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi
index 92e44d4ba96b..31f9d47bced8 100644
--- a/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-venice-gw73xx-0x-u-boot.dtsi
@@ -39,6 +39,13 @@
 		gpios = <9 GPIO_ACTIVE_HIGH>;
 		line-name = "dio1";
 	};
+
+	tpm_rst {
+		gpio-hog;
+		output-high;
+		gpios = <11 GPIO_ACTIVE_HIGH>;
+		line-name = "tpm_rst#";
+	};
 };
 
 &gpio4 {
diff --git a/arch/arm/dts/imx8mm-venice-gw73xx.dtsi b/arch/arm/dts/imx8mm-venice-gw73xx.dtsi
index 244ef8d6cc68..7b2130dbdb21 100644
--- a/arch/arm/dts/imx8mm-venice-gw73xx.dtsi
+++ b/arch/arm/dts/imx8mm-venice-gw73xx.dtsi
@@ -104,8 +104,15 @@
 &ecspi2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_spi2>;
-	cs-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>;
+	cs-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>,
+		   <&gpio1 10 GPIO_ACTIVE_LOW>;
 	status = "okay";
+
+	tpm at 1 {
+		compatible = "tcg,tpm_tis-spi";
+		reg = <0x1>;
+		spi-max-frequency = <36000000>;
+	};
 };
 
 &gpio1 {
@@ -364,6 +371,7 @@
 			MX8MM_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI	0xd6
 			MX8MM_IOMUXC_ECSPI2_MISO_ECSPI2_MISO	0xd6
 			MX8MM_IOMUXC_ECSPI2_SS0_GPIO5_IO13	0xd6
+			MX8MM_IOMUXC_GPIO1_IO10_GPIO1_IO10	0xd6
 		>;
 	};
 
-- 
2.25.1



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