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

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[ Upstream commit eaad40466bd715c4b342ac9f7c889f5281714feb ]

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: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20210916210045.31769-1-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eddie James 2021-09-16 16:00:45 -05:00 committed by Greg Kroah-Hartman
parent 75e9562bb4
commit 794f7da40d
3 changed files with 50 additions and 0 deletions
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15
arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts
View File

@ -231,6 +231,21 @@
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 {

15
arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
View File

@ -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 {

20
arch/arm/boot/dts/aspeed-g6.dtsi
View File

@ -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;