linux-kernel - Re: [PATCH] iio: adc: meson: add separate config for axg SoC family

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Message-ID: <f693f5c2-7103-4d32-bc38-6832b0f46453@linaro.org>
Date:   Tue, 21 Nov 2023 12:08:28 +0100
From:   neil.armstrong@...aro.org
To:     George Stark <gnstark@...utedevices.com>, jic23@...nel.org,
        lars@...afoo.de, khilman@...libre.com, jbrunet@...libre.com,
        martin.blumenstingl@...glemail.com,
        andriy.shevchenko@...ux.intel.com, nuno.sa@...log.com,
        u.kleine-koenig@...gutronix.de
Cc:     linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        kernel@...utedevices.com
Subject: Re: [PATCH] iio: adc: meson: add separate config for axg SoC family

On 21/11/2023 08:50, George Stark wrote:
> According to Amlogic custom kernels ADC of axg SoC family requires
> unique number of setting so add dedicated config for it.

Please rephrase precising AXG has vref_select and requires this setting
to work nominally and thus requires a separate config.

With this:
Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>

> 
> Signed-off-by: George Stark <gnstark@...utedevices.com>
> ---
>   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",
>   };
>