Re: [PATCH v3 1/4] Documentation: dt-bindings: add the Amlogic Meson SAR ADC documentation
From: Jonathan Cameron <hidden>
Date: 2017-01-21 12:39:39
Also in:
linux-amlogic, linux-arm-kernel, linux-clk, linux-iio
On 19/01/17 14:58, Martin Blumenstingl wrote:
This adds the devicetree binding documentation for the SAR ADC found in Amlogic Meson SoCs. Currently only the GXBB, GXL and GXM SoCs are supported. Signed-off-by: Martin Blumenstingl <martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> Tested-by: Neil Armstrong <narmstrong-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
Looks straight forward to me, but there is just enough here that I'm looking for an Ack from Rob or Mark. Thanks, Jonathan
quoted hunk
--- .../bindings/iio/adc/amlogic,meson-saradc.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txtdiff --git a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt new file mode 100644 index 000000000000..9a0bec7afc63 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt@@ -0,0 +1,31 @@ +* Amlogic Meson SAR (Successive Approximation Register) A/D converter + +Required properties: +- compatible: depending on the SoC this should be one of: + - "amlogic,meson-gxbb-saradc" for GXBB + - "amlogic,meson-gxl-saradc" for GXL and GXM + along with the generic "amlogic,meson-saradc" +- reg: the physical base address and length of the registers +- clocks: phandle and clock identifier (see clock-names) +- clock-names: mandatory clocks: + - "clkin" for the reference clock (typically XTAL) + - "core" for the SAR ADC core clock + optional clocks: + - "sana" for the analog clock + - "adc_clk" for the ADC (sampling) clock + - "adc_sel" for the ADC (sampling) clock mux +- vref-supply: the regulator supply for the ADC reference voltage +- #io-channel-cells: must be 1, see ../iio-bindings.txt + +Example: + saradc: adc@8680 { + compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc"; + #io-channel-cells = <1>; + reg = <0x0 0x8680 0x0 0x34>; + 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"; + };
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