path: root/dts/Bindings/iio/adc/st,stm32-dfsdm-adc.txt
diff options
Diffstat (limited to 'dts/Bindings/iio/adc/st,stm32-dfsdm-adc.txt')
1 files changed, 5 insertions, 2 deletions
diff --git a/dts/Bindings/iio/adc/st,stm32-dfsdm-adc.txt b/dts/Bindings/iio/adc/st,stm32-dfsdm-adc.txt
index ed7520d..75ba25d 100644
--- a/dts/Bindings/iio/adc/st,stm32-dfsdm-adc.txt
+++ b/dts/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: