Commit 0a6d561c authored by Janne Grunau's avatar Janne Grunau Committed by Sven Peter
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arm64: dts: apple: t8112: Add spi controller nodes 



Apple silicon devices have one or more SPI devices. Add device tree
nodes for all known controllers. The missing ones could be guessed and
tested with a little effort but since the devices expose no pins and
no new devices are expected there is no point in spending the effort.
SPI is used for spi-nor and input devices like keyboard, trackpad,
touchscreen and fingerprint reader. Only the spi-nor flash has upstream
drivers. Support for it will be added in a following commit.

Reviewed-by: default avatarNeal Gompa <neal@gompa.dev>
Signed-off-by: default avatarJanne Grunau <j@jannau.net>
Link: https://lore.kernel.org/r/20241203-asahi-spi-dt-v2-3-cd68bfaf0c84@jannau.net


Signed-off-by: default avatarSven Peter <sven@svenpeter.dev>
parent 556cd4bb

arch/arm64/boot/dts/apple/t8112.dtsi

+43 −1
Original line number Diff line number Diff line
@@ -349,6 +349,13 @@ clkref: clock-ref { 
		clock-output-names = "clkref";

	};



	clk_200m: clock-200m {

		compatible = "fixed-clock";

		#clock-cells = <0>;

		clock-frequency = <200000000>;

		clock-output-names = "clk_200m";

	};



	/*

	 * This is a fabulated representation of the input clock

	 * to NCO since we don't know the true clock tree.
@@ -467,6 +474,34 @@ fpwm1: pwm@235044000 { 
			status = "disabled";

		};



		spi1: spi@235104000 {

			compatible = "apple,t8112-spi", "apple,spi";

			reg = <0x2 0x35104000 0x0 0x4000>;

			interrupt-parent = <&aic>;

			interrupts = <AIC_IRQ 749 IRQ_TYPE_LEVEL_HIGH>;

			clocks = <&clk_200m>;

			pinctrl-0 = <&spi1_pins>;

			pinctrl-names = "default";

			power-domains = <&ps_spi1>;

			#address-cells = <1>;

			#size-cells = <0>;

			status = "disabled";

		};



		spi3: spi@23510c000 {

			compatible = "apple,t8112-spi", "apple,spi";

			reg = <0x2 0x3510c000 0x0 0x4000>;

			interrupt-parent = <&aic>;

			interrupts = <AIC_IRQ 751 IRQ_TYPE_LEVEL_HIGH>;

			clocks = <&clkref>;

			pinctrl-0 = <&spi3_pins>;

			pinctrl-names = "default";

			power-domains = <&ps_spi3>;

			#address-cells = <1>;

			#size-cells = <0>;

			status = "disabled";

		};



		serial0: serial@235200000 {

			compatible = "apple,s5l-uart";

			reg = <0x2 0x35200000 0x0 0x1000>;
@@ -626,13 +661,20 @@ i2c4_pins: i2c4-pins { 
					 <APPLE_PINMUX(130, 1)>;

			};



			spi3_pins: spi3-pins {

			spi1_pins: spi1-pins {

				pinmux = <APPLE_PINMUX(46, 1)>,

					<APPLE_PINMUX(47, 1)>,

					<APPLE_PINMUX(48, 1)>,

					<APPLE_PINMUX(49, 1)>;

			};



			spi3_pins: spi3-pins {

				pinmux = <APPLE_PINMUX(93, 1)>,

					<APPLE_PINMUX(94, 1)>,

					<APPLE_PINMUX(95, 1)>,

					<APPLE_PINMUX(96, 1)>;

			};



			pcie_pins: pcie-pins {

				pinmux = <APPLE_PINMUX(162, 1)>,

					 <APPLE_PINMUX(163, 1)>,