diff options
| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2017-01-22 19:17:14 +0100 |
|---|---|---|
| committer | Kevin Hilman <khilman@baylibre.com> | 2017-01-30 10:44:04 -0800 |
| commit | bd80ef5ed46233d90f216805ff40aba326ff1bdd (patch) | |
| tree | 980f6e5d81bd0a66bfc3c7434aa631cbba6a34f2 /arch | |
| parent | 249a2243e97edcd2cb0bef01a934d4ba21fb167f (diff) | |
| download | linux-bd80ef5ed46233d90f216805ff40aba326ff1bdd.tar.gz linux-bd80ef5ed46233d90f216805ff40aba326ff1bdd.tar.bz2 linux-bd80ef5ed46233d90f216805ff40aba326ff1bdd.zip | |
ARM64: dts: meson: meson-gx: add the SAR ADC
Add the SAR ADC to meson-gxbb.dtsi and meson-gxl.dtsi. GXBB provides a
10-bit ADC while GXL and GXM provide a 12-bit ADC.
Some boards use resistor ladder buttons connected through one of the ADC
channels. On newer devices (GXL and GXM) some boards use pull-ups/downs
to change the resistance (and thus the ADC value) on one of the ADC
channels to indicate the board revision.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 8 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 10 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 10 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/amlogic/meson-gxm.dtsi | 4 |
4 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi index 9110dc1a2481..f100d0b013b4 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi @@ -237,6 +237,14 @@ status = "disabled"; }; + saradc: adc@8680 { + compatible = "amlogic,meson-saradc"; + reg = <0x0 0x8680 0x0 0x34>; + #io-channel-cells = <1>; + interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>; + status = "disabled"; + }; + pwm_ef: pwm@86c0 { compatible = "amlogic,meson-gx-pwm", "amlogic,meson-gxbb-pwm"; reg = <0x0 0x086c0 0x0 0x10>; diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi index 39a774ad83ce..04b3324bc132 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi @@ -490,6 +490,16 @@ clocks = <&clkc CLKID_I2C>; }; +&saradc { + compatible = "amlogic,meson-gxbb-saradc", "amlogic,meson-saradc"; + clocks = <&xtal>, + <&clkc CLKID_SAR_ADC>, + <&clkc CLKID_SANA>, + <&clkc CLKID_SAR_ADC_CLK>, + <&clkc CLKID_SAR_ADC_SEL>; + clock-names = "clkin", "core", "sana", "adc_clk", "adc_sel"; +}; + &sd_emmc_a { clocks = <&clkc CLKID_SD_EMMC_A>, <&xtal>, diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi index 5f1100af72b1..fe11b5fc61f7 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi @@ -347,6 +347,16 @@ clocks = <&clkc CLKID_I2C>; }; +&saradc { + compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc"; + clocks = <&xtal>, + <&clkc CLKID_SAR_ADC>, + <&clkc CLKID_SANA>, + <&clkc CLKID_SAR_ADC_CLK>, + <&clkc CLKID_SAR_ADC_SEL>; + clock-names = "clkin", "core", "sana", "adc_clk", "adc_sel"; +}; + &sd_emmc_a { clocks = <&clkc CLKID_SD_EMMC_A>, <&xtal>, diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi index 4c55665a253f..ddea7305c644 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi @@ -117,6 +117,10 @@ }; }; +&saradc { + compatible = "amlogic,meson-gxm-saradc", "amlogic,meson-saradc"; +}; + &scpi_dvfs { clock-indices = <0 1>; clock-output-names = "vbig", "vlittle"; |