diff options
| author | Eddie James <eajames@linux.ibm.com> | 2021-09-17 00:00:45 +0300 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2021-09-24 07:37:17 +0300 |
| commit | 9eefd58fb7e86d1cd6c4edc165be28e6c8d37deb (patch) | |
| tree | c15e06f00aad120df5bc7b8f47627cba0c503cd4 | |
| parent | ad9ca9077fea1a474b6eb773d6396bddaa203c00 (diff) | |
| download | linux-9eefd58fb7e86d1cd6c4edc165be28e6c8d37deb.tar.xz | |
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
OpenBMC-Staging-Count: 1
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>
| -rw-r--r-- | arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts | 15 | ||||
| -rw-r--r-- | arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts | 15 | ||||
| -rw-r--r-- | arch/arm/boot/dts/aspeed-g6.dtsi | 20 |
3 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts index c2bf0d411bd8..9d04d195b718 100644 --- a/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts +++ b/arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts @@ -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 { diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts index 0adb4a8abb75..27806deaca66 100644 --- a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts +++ b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts @@ -218,6 +218,21 @@ 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 { diff --git a/arch/arm/boot/dts/aspeed-g6.dtsi b/arch/arm/boot/dts/aspeed-g6.dtsi index f96607b7b4e2..02e54fb13815 100644 --- a/arch/arm/boot/dts/aspeed-g6.dtsi +++ b/arch/arm/boot/dts/aspeed-g6.dtsi @@ -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; |