linux-kernel - [PATCH 02/17] ARM: dts: aspeed: minerva: Add spi-gpio

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Date: Tue, 25 Jun 2024 20:18:20 +0800
From: Yang Chen <yangchen.openbmc@...il.com>
To: joel@....id.au,
	andrew@...econstruct.com.au,
	patrick@...cx.xyz,
	linux-arm-kernel@...ts.infradead.org,
	linux-aspeed@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Cc: Jerry.Lin@...ntatw.com,
	yangchen.openbmc@...il.com
Subject: [PATCH 02/17] ARM: dts: aspeed: minerva: Add spi-gpio

From: Yang Chen <yang.chen@...ntatw.com>

Add spi-gpio for TPM device.

Signed-off-by: Yang Chen <yang.chen@...ntatw.com>
---
 .../aspeed/aspeed-bmc-facebook-minerva.dts    | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-minerva.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-minerva.dts
index e20e31917d6c..7d96a3638448 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-minerva.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-minerva.dts
@@ -22,6 +22,8 @@ aliases {
 		i2c19 = &imux19;
 		i2c20 = &imux20;
 		i2c21 = &imux21;
+
+		spi1 = &spi_gpio;
 	};
 
 	chosen {
@@ -49,6 +51,25 @@ led-fan-fault {
 			default-state = "off";
 		};
 	};
+
+	spi_gpio: spi-gpio {
+		status = "okay";
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		gpio-sck = <&gpio0 ASPEED_GPIO(Z, 3) GPIO_ACTIVE_HIGH>;
+		gpio-mosi = <&gpio0 ASPEED_GPIO(Z, 4) GPIO_ACTIVE_HIGH>;
+		gpio-miso = <&gpio0 ASPEED_GPIO(Z, 5) GPIO_ACTIVE_HIGH>;
+		num-chipselects = <1>;
+		cs-gpios = <&gpio0 ASPEED_GPIO(Z, 0) GPIO_ACTIVE_LOW>;
+
+		tpmdev@0 {
+			compatible = "infineon,slb9670", "tcg,tpm_tis-spi";
+			spi-max-frequency = <33000000>;
+			reg = <0>;
+		};
+	};
 };
 
 &uart6 {
-- 
2.34.1