ARM: dts: aspeed: Harma: Add spi-gpio

Add spi-gpio for tpm device.

Signed-off-by: Peter Yin <peteryin.openbmc@gmail.com>
Link: https://lore.kernel.org/r/20240412091600.2534693-6-peteryin.openbmc@gmail.com
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

Author: Peter Yin

arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts

@@ -28,6 +28,8 @@
 		i2c29 = &imux29;
 		i2c30 = &imux30;
 		i2c31 = &imux31;
+
+		spi1 = &spi_gpio;
 	};
 
 	chosen {
@@ -67,6 +69,25 @@
 			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 = "infineon,slb9670", "tcg,tpm_tis-spi";
+			spi-max-frequency = <33000000>;
+			reg = <0>;
+		};
+	};
 };
 
 // HOST BIOS Debug