Add STM32 ADC2 internal channels VREFINT and VDDCORE to STM32MP15x SoCs. Add support of vrefint channel by adding access to vrefint calibration data in OTP. The internal channels are defined in STM32MP15 SoC DT according to generic channel bindings. The STM32 driver does not support a mixed use of legacy and generic channels. When generic channels are defined, legacy channel are ignored. This involves that the board device trees using legacy bindings have to be changed to generic bindings. Adopt generic iio bindings on all STM32 boards implementing the ADC. This serie does not update stm32mp15xx-dhcom-som and stm32mp15xx-dhcor-avenger96 DTs. These DTs have to be updated also, but this change is already handled through the following patch: https://lore.kernel.org/linux-arm-kernel/20230518020547.487670-1-marex@xxxxxxx/T/ Olivier Moysan (8): ARM: dts: stm32: add adc internal channels to stm32mp15 ARM: dts: stm32: add vrefint calibration on stm32mp15 ARM: dts: stm32: add vrefint support to adc2 on stm32mp15 ARM: dts: stm32: enable adc on stm32mp15xx-dkx boards ARM: dts: stm32: adopt generic iio bindings for adc channels on stm32mp157c-ed1 ARM: dts: stm32: adopt generic iio bindings for adc channels on emstamp-argon ARM: dts: stm32: adopt generic iio bindings for adc channels on dhcor-drc ARM: dts: stm32: adopt generic iio bindings for adc channels on dhcor-testbench arch/arm/boot/dts/stm32mp151.dtsi | 17 +++++++++++ arch/arm/boot/dts/stm32mp157c-ed1.dts | 16 ++++++++-- .../boot/dts/stm32mp157c-emstamp-argon.dtsi | 6 ++-- .../dts/stm32mp15xx-dhcor-drc-compact.dtsi | 28 +++++++++++++++--- .../boot/dts/stm32mp15xx-dhcor-testbench.dtsi | 28 +++++++++++++++--- arch/arm/boot/dts/stm32mp15xx-dkx.dtsi | 29 +++++++++++++------ 6 files changed, 102 insertions(+), 22 deletions(-) -- 2.25.1
