[PATCH v5 0/3] Add SARADC support on Sophgo CV18XX series

[Jonathan Cameron]

On Thu, 29 Aug 2024 14:31:49 +0200
Thomas Bonnefille <thomas.bonnefille at bootlin.com> wrote:

> This patchset adds initial ADC support for Sophgo CV18XX series SoC. This driver can
> work with or without interrupt.
> 
> Link: https://github.com/sophgo/sophgo-doc/releases/download/sg2002-trm-v1.0/sg2002_trm_en.pdf
> 
> Signed-off-by: Thomas Bonnefille <thomas.bonnefille at bootlin.com>
Applied patches 1 and 2 to the togreg branch of iio.git. Currently that's
just pushed out as testing because I want to rebase shortly to get some
usptream fixes needed for other series.

Thanks,

Jonathan




> ---
> Changes in v5:
> - Add the ability to read the sample frequency
> - Edit commit message to remove No-Die reference and add precision on
>   the ADC series
> - Rename binding and driver file to match compatible
> - Reformat the channel property in the binding
> - Clean driver code
> - Link to v4: https://lore.kernel.org/r/20240812-sg2002-adc-v4-0-599bdb67592f@bootlin.com
> 
> Changes in v4:
> - Lowercase register hexadecimal value in dts
> - Reorder properties in dts
> - Use only a const in the compatible property of the device tree bindings
> - Specify the series of SoC in the driver to avoid confusing with other
>   Sophgo SoCs
> - Add channel description in the bindings
> - Use FIELD_PREP in the default configuration
> - Index channels from 0
> - Return PTR_ERR instead of IS_ERR
> - Link to v3: https://lore.kernel.org/r/20240731-sg2002-adc-v3-0-5ac40a518c0a@bootlin.com
> 
> Changes in v3:
> - Subdivide default cycle configuration into multiple elementary
>   configurations
> - Fix formatting in the driver
> - Use devm_mutex_init
> - Use devm_clk_get_enabled now because the clock is no more optional
> - Remove handling of Saradc in No-Die Domain as RTC isn't implemented yet
> - Use cv1800-saradc as default compatible instead of a wildcard
> - Remove platform_set_drvdata as it wasn't used
> - Link to v2: https://lore.kernel.org/r/20240705-sg2002-adc-v2-0-83428c20a9b2@bootlin.com
> 
> Changes in v2:
> - Drop modifications in MAINTAINERS file
> - Rename the ADC from "sophgo-adc" to "sophgo-cv18xx-adc" to avoid
>   conflict with ADCs available in future Sophgo SoCs.
> - Reorder nodes in DT to match DTS coding style
> - Switch from including <linux/of.h> to <linux/mod_devicetable.h>
> - Use scoped_guard instead of mutex_lock/unlock
> - Check IRQ Status in the handler
> - Change IIO device name
> - Use devm_clk_get_optional_enabled instead of a clock variable
> - Init completion before the IRQ request
> - Removed unnecessary iio_info structure in the private data of the
>   driver
> - Use SoC specific compatible in the bindings and device trees
> - Link to v1: https://lore.kernel.org/r/20240702-sg2002-adc-v1-0-ac66e076a756@bootlin.com
> 
> ---
> Thomas Bonnefille (3):
>       dt-bindings: iio: adc: sophgo,cv1800b-saradc: Add Sophgo CV1800B SARADC
>       iio: adc: sophgo-saradc: Add driver for Sophgo CV1800B SARADC
>       riscv: dts: sophgo: Add SARADC description for Sophgo CV1800B
> 
>  .../bindings/iio/adc/sophgo,cv1800b-saradc.yaml    |  83 ++++++++
>  arch/riscv/boot/dts/sophgo/cv18xx.dtsi             |  22 +++
>  drivers/iio/adc/Kconfig                            |  10 +
>  drivers/iio/adc/Makefile                           |   1 +
>  drivers/iio/adc/sophgo-cv1800b-adc.c               | 218 +++++++++++++++++++++
>  5 files changed, 334 insertions(+)
> ---
> base-commit: 5be63fc19fcaa4c236b307420483578a56986a37
> change-id: 20240527-sg2002-adc-924b862cd3f2
> 
> Best regards,