linux-kernel - [PATCH v1 5/5] ARM: dts: aspeed: Harma: Add spi-gpio

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Date: Tue,  2 Jan 2024 12:44:09 +0800
From: Peter Yin <peteryin.openbmc@...il.com>
To: patrick@...cx.xyz,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Joel Stanley <joel@....id.au>,
	Andrew Jeffery <andrew@...id.au>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-aspeed@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 5/5] ARM: dts: aspeed: Harma: Add spi-gpio

Add spi-gpio for tpm device.

Signed-off-by: Peter Yin <peteryin.openbmc@...il.com>
---
 .../dts/aspeed/aspeed-bmc-facebook-harma.dts  | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
index 36aad01dda20..25ae044cd176 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
@@ -28,6 +28,8 @@ aliases {
 		i2c29 = &imux29;
 		i2c30 = &imux30;
 		i2c31 = &imux31;
+
+		spi1 = &spi_gpio;
 	};
 
 	chosen {
@@ -67,6 +69,25 @@ led-2 {
 			gpios = <&gpio0 124 GPIO_ACTIVE_HIGH>;
 		};
 	};
+
+	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 = "tcg,tpm_tis-spi";
+			spi-max-frequency = <33000000>;
+			reg = <0>;
+		};
+	};
 };
 
 // HOST BIOS Debug
-- 
2.25.1