Regarding the sample buffer size, I'm keeping it 32-bits long following suggestion from Nuno and due to a bit of laziness from my side to re-test it. Will change if required. Thank you to everybody who reviewed these patches. I appreciate your support. Thanks, Marcelo Marcelo Schmitt (7): spi: Enable controllers to extend the SPI protocol with MOSI idle configuration spi: bitbang: Implement support for MOSI idle state configuration spi: spi-gpio: Add support for MOSI idle state configuration spi: spi-axi-spi-engine: Add support for MOSI idle configuration dt-bindings: iio: adc: Add AD4000 iio: adc: Add support for AD4000 docs: iio: Add documentation for AD4000 .../bindings/iio/adc/adi,ad4000.yaml | 197 +++++ Documentation/iio/ad4000.rst | 131 ++++ Documentation/iio/index.rst | 1 + Documentation/spi/spi-summary.rst | 83 ++ MAINTAINERS | 9 + drivers/iio/adc/Kconfig | 12 + drivers/iio/adc/Makefile | 1 + drivers/iio/adc/ad4000.c | 708 ++++++++++++++++++ drivers/spi/spi-axi-spi-engine.c | 15 +- drivers/spi/spi-bitbang.c | 24 + drivers/spi/spi-gpio.c | 12 +- drivers/spi/spi.c | 7 + include/linux/spi/spi_bitbang.h | 1 + include/uapi/linux/spi/spi.h | 5 +- 14 files changed, 1200 insertions(+), 6 deletions(-) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4000.yaml create mode 100644 Documentation/iio/ad4000.rst create mode 100644 drivers/iio/adc/ad4000.c -- 2.43.0