Commit eaad4046 authored by Eddie James's avatar Eddie James Committed by Joel Stanley
Browse files

ARM: dts: aspeed: Add ADC for AST2600 and enable for Rainier and Everest 



Add the ADC nodes to the AST2600 devicetree. Enable ADC1 for Rainier and
Everest systems and add an iio-hwmon node for the 7th channel to report
the battery voltage.

Tested on Rainier:
~# cat /sys/class/hwmon/hwmon11/in1_input
1347

Signed-off-by: default avatarEddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20210916210045.31769-1-eajames@linux.ibm.com


Signed-off-by: default avatarJoel Stanley <joel@jms.id.au>
parent 1390293e

arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts

+15 −0
Original line number Diff line number Diff line
@@ -243,6 +243,21 @@ 
			gpios = <&gpio0 ASPEED_GPIO(P, 4) GPIO_ACTIVE_LOW>;

		};

	};



	iio-hwmon {

		compatible = "iio-hwmon";

		io-channels = <&adc1 7>;

	};

};



&adc1 {

	status = "okay";

	aspeed,int-vref-microvolt = <2500000>;

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_adc8_default &pinctrl_adc9_default

				 &pinctrl_adc10_default &pinctrl_adc11_default

				 &pinctrl_adc12_default &pinctrl_adc13_default

				 &pinctrl_adc14_default &pinctrl_adc15_default>;

};



&gpio0 {

arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts

+15 −0
Original line number Diff line number Diff line
@@ -246,6 +246,21 @@ 
			linux,code = <11>;

		};

	};



	iio-hwmon {

		compatible = "iio-hwmon";

		io-channels = <&adc1 7>;

	};

};



&adc1 {

	status = "okay";

	aspeed,int-vref-microvolt = <2500000>;

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_adc8_default &pinctrl_adc9_default

		&pinctrl_adc10_default &pinctrl_adc11_default

		&pinctrl_adc12_default &pinctrl_adc13_default

		&pinctrl_adc14_default &pinctrl_adc15_default>;

};



&ehci1 {

arch/arm/boot/dts/aspeed-g6.dtsi

+20 −0
Original line number Diff line number Diff line
@@ -364,6 +364,26 @@ 
				status = "disabled";

			};



			adc0: adc@1e6e9000 {

				compatible = "aspeed,ast2600-adc0";

				reg = <0x1e6e9000 0x100>;

				clocks = <&syscon ASPEED_CLK_APB2>;

				resets = <&syscon ASPEED_RESET_ADC>;

				interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;

				#io-channel-cells = <1>;

				status = "disabled";

			};



			adc1: adc@1e6e9100 {

				compatible = "aspeed,ast2600-adc1";

				reg = <0x1e6e9100 0x100>;

				clocks = <&syscon ASPEED_CLK_APB2>;

				resets = <&syscon ASPEED_RESET_ADC>;

				interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;

				#io-channel-cells = <1>;

				status = "disabled";

			};



			gpio0: gpio@1e780000 {

				#gpio-cells = <2>;

				gpio-controller;