diff options
| -rw-r--r-- | Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.txt | 7 | ||||
| -rw-r--r-- | drivers/iio/adc/stm32-dfsdm-core.c | 21 |
2 files changed, 26 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: diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c index 1d0d8238d9b5..bf089f5d6225 100644 --- a/drivers/iio/adc/stm32-dfsdm-core.c +++ b/drivers/iio/adc/stm32-dfsdm-core.c @@ -25,6 +25,8 @@ struct stm32_dfsdm_dev_data { #define STM32H7_DFSDM_NUM_FILTERS 4 #define STM32H7_DFSDM_NUM_CHANNELS 8 +#define STM32MP1_DFSDM_NUM_FILTERS 6 +#define STM32MP1_DFSDM_NUM_CHANNELS 8 static bool stm32_dfsdm_volatile_reg(struct device *dev, unsigned int reg) { @@ -61,6 +63,21 @@ static const struct stm32_dfsdm_dev_data stm32h7_dfsdm_data = { .regmap_cfg = &stm32h7_dfsdm_regmap_cfg, }; +static const struct regmap_config stm32mp1_dfsdm_regmap_cfg = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = sizeof(u32), + .max_register = 0x7fc, + .volatile_reg = stm32_dfsdm_volatile_reg, + .fast_io = true, +}; + +static const struct stm32_dfsdm_dev_data stm32mp1_dfsdm_data = { + .num_filters = STM32MP1_DFSDM_NUM_FILTERS, + .num_channels = STM32MP1_DFSDM_NUM_CHANNELS, + .regmap_cfg = &stm32mp1_dfsdm_regmap_cfg, +}; + struct dfsdm_priv { struct platform_device *pdev; /* platform device */ @@ -248,6 +265,10 @@ static const struct of_device_id stm32_dfsdm_of_match[] = { .compatible = "st,stm32h7-dfsdm", .data = &stm32h7_dfsdm_data, }, + { + .compatible = "st,stm32mp1-dfsdm", + .data = &stm32mp1_dfsdm_data, + }, {} }; MODULE_DEVICE_TABLE(of, stm32_dfsdm_of_match); |