On Wed, 22 Nov 2023 10:47:41 +0300
George Stark <gnstark@xxxxxxxxxxxxxxxxx> wrote:
> According to Amlogic custom kernels ADC of axg SoC family has
> vref_select and requires this setting to work nominally and thus
> needs a separate config.
>
> Signed-off-by: George Stark <gnstark@xxxxxxxxxxxxxxxxx>
> Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Is this a fix? If so, please provide a fixes tag.
Or is it aligning with the vendor kernels and we don't know if
it's strictly necessary or not?
> ---
> drivers/iio/adc/meson_saradc.c | 16 +++++++++++++++-
> 1 file changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
> index db280da9edbf..34555a85f131 100644
> --- a/drivers/iio/adc/meson_saradc.c
> +++ b/drivers/iio/adc/meson_saradc.c
> @@ -1242,6 +1242,20 @@ static const struct meson_sar_adc_param meson_sar_adc_gxl_param = {
> .cmv_select = 1,
> };
>
> +static const struct meson_sar_adc_param meson_sar_adc_axg_param = {
> + .has_bl30_integration = true,
> + .clock_rate = 1200000,
> + .bandgap_reg = MESON_SAR_ADC_REG11,
> + .regmap_config = &meson_sar_adc_regmap_config_gxbb,
> + .resolution = 12,
> + .disable_ring_counter = 1,
> + .has_reg11 = true,
> + .vref_volatge = 1,
> + .has_vref_select = true,
> + .vref_select = VREF_VDDA,
> + .cmv_select = 1,
> +};
> +
> static const struct meson_sar_adc_param meson_sar_adc_g12a_param = {
> .has_bl30_integration = false,
> .clock_rate = 1200000,
> @@ -1286,7 +1300,7 @@ static const struct meson_sar_adc_data meson_sar_adc_gxm_data = {
> };
>
> static const struct meson_sar_adc_data meson_sar_adc_axg_data = {
> - .param = &meson_sar_adc_gxl_param,
> + .param = &meson_sar_adc_axg_param,
> .name = "meson-axg-saradc",
> };
>
