linux-kernel - [PATCH v3] arm64: dts: imx8mm-verdin: add TPM device

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Message-Id: <20240628090751.797818-1-ivitro@gmail.com>
Date: Fri, 28 Jun 2024 10:07:51 +0100
From: Vitor Soares <ivitro@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>
Cc: Vitor Soares <vitor.soares@...adex.com>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	ivitro@...il.com
Subject: [PATCH v3] arm64: dts: imx8mm-verdin: add TPM device

From: Vitor Soares <vitor.soares@...adex.com>

Add TPM device found on Verdin iMX8M Mini PID4 0090 variant.

While adding the node, rename `pinctrl_pmic_tpm_ena` to
`pinctrl_tpm_spi_cs`.

Signed-off-by: Vitor Soares <vitor.soares@...adex.com>
---
v2->v3
  - Match node name with label `pinctrl_tpm_spi_cs`.

v1->v2
  - rename `pinctrl_pmic_tpm_ena` to `pinctrl_tpm_spi_cs`.

 .../boot/dts/freescale/imx8mm-verdin.dtsi      | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
index 98544741ce17..085498fa471c 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
@@ -228,15 +228,16 @@ &ecspi2 {
 	pinctrl-0 = <&pinctrl_ecspi2>;
 };
 
-/* Verdin CAN_1 (On-module) */
+/* On-module SPI */
 &ecspi3 {
 	#address-cells = <1>;
 	#size-cells = <0>;
-	cs-gpios = <&gpio5 25 GPIO_ACTIVE_LOW>;
+	cs-gpios = <&gpio5 25 GPIO_ACTIVE_LOW>, <&gpio4 19 GPIO_ACTIVE_LOW>;
 	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_ecspi3>;
+	pinctrl-0 = <&pinctrl_ecspi3>, <&pinctrl_tpm_spi_cs>;
 	status = "okay";
 
+	/* Verdin CAN_1 */
 	can1: can@0 {
 		compatible = "microchip,mcp251xfd";
 		clocks = <&clk40m>;
@@ -246,6 +247,12 @@ can1: can@0 {
 		reg = <0>;
 		spi-max-frequency = <8500000>;
 	};
+
+	verdin_som_tpm: tpm@1 {
+		compatible = "atmel,attpm20p", "tcg,tpm_tis-spi";
+		reg = <0x1>;
+		spi-max-frequency = <36000000>;
+	};
 };
 
 /* Verdin ETH_1 (On-module PHY) */
@@ -808,8 +815,7 @@ &iomuxc {
 	pinctrl-0 = <&pinctrl_gpio1>, <&pinctrl_gpio2>,
 		    <&pinctrl_gpio3>, <&pinctrl_gpio4>,
 		    <&pinctrl_gpio7>, <&pinctrl_gpio8>,
-		    <&pinctrl_gpio_hog1>, <&pinctrl_gpio_hog2>, <&pinctrl_gpio_hog3>,
-		    <&pinctrl_pmic_tpm_ena>;
+		    <&pinctrl_gpio_hog1>, <&pinctrl_gpio_hog2>, <&pinctrl_gpio_hog3>;
 
 	pinctrl_can1_int: can1intgrp {
 		fsl,pins =
@@ -1111,7 +1117,7 @@ pinctrl_sai5: sai5grp {
 	};
 
 	/* control signal for optional ATTPM20P or SE050 */
-	pinctrl_pmic_tpm_ena: pmictpmenagrp {
+	pinctrl_tpm_spi_cs: tpmspicsgrp {
 		fsl,pins =
 			<MX8MM_IOMUXC_SAI1_TXD7_GPIO4_IO19		0x106>;	/* PMIC_TPM_ENA */
 	};
-- 
2.34.1