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| author | Fabrice Gasnier <fabrice.gasnier@st.com> | 2018-05-02 15:05:23 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-05-12 10:22:17 +0100 |
| commit | e2fad7450306df281d21111620124954d4cb2cd9 (patch) | |
| tree | 632576daaff0f03978127ea2eee07b7f8d1004bc /Documentation/devicetree/bindings/iio | |
| parent | cbf73ae59bee340f423479eb48aef9a0efdd8010 (diff) | |
| download | linux-e2fad7450306df281d21111620124954d4cb2cd9.tar.gz linux-e2fad7450306df281d21111620124954d4cb2cd9.tar.bz2 linux-e2fad7450306df281d21111620124954d4cb2cd9.zip | |
iio: adc: stm32-dfsdm: Add support for stm32mp1
Add support for DFSDM (Digital Filter For Sigma Delta Modulators)
to STM32MP1. This variant is close to STM32H7 DFSDM, it implements
6 filter instances. Registers map is also increased.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation/devicetree/bindings/iio')
| -rw-r--r-- | Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt index ed7520d1d051..75ba25d062e1 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt @@ -8,14 +8,16 @@ It is mainly targeted for: - PDM microphones (audio digital microphone) It features up to 8 serial digital interfaces (SPI or Manchester) and -up to 4 filters on stm32h7. +up to 4 filters on stm32h7 or 6 filters on stm32mp1. Each child node match with a filter instance. Contents of a STM32 DFSDM root node: ------------------------------------ Required properties: -- compatible: Should be "st,stm32h7-dfsdm". +- compatible: Should be one of: + "st,stm32h7-dfsdm" + "st,stm32mp1-dfsdm" - reg: Offset and length of the DFSDM block register set. - clocks: IP and serial interfaces clocking. Should be set according to rcc clock ID and "clock-names". @@ -45,6 +47,7 @@ Required properties: "st,stm32-dfsdm-adc" for sigma delta ADCs "st,stm32-dfsdm-dmic" for audio digital microphone. - reg: Specifies the DFSDM filter instance used. + Valid values are from 0 to 3 on stm32h7, 0 to 5 on stm32mp1. - interrupts: IRQ lines connected to each DFSDM filter instance. - st,adc-channels: List of single-ended channels muxed for this ADC. valid values: |