Commit 48dc1abd authored by Martin Blumenstingl's avatar Martin Blumenstingl Committed by Jonathan Cameron
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iio: adc: meson-saradc: Disable BL30 integration on G12A and newer SoCs 



G12A and newer don't use the SAR ADC to read the SoC temperature from
within the firmware. Instead there's now a dedicated thermal sensor.
Disable the BL30 integration for G12A and newer SoCs to save a few CPU
cycles when reading samples.
Adding a separate struct meson_sar_adc_data is a good idea anyways
because starting with G12A there's some extra registers to read the
samples in a simplified way.

Signed-off-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20210717233718.332267-2-martin.blumenstingl@googlemail.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent a574e68f

drivers/iio/adc/meson_saradc.c

+9 −1
Original line number Diff line number Diff line
@@ -1104,6 +1104,14 @@ static const struct meson_sar_adc_param meson_sar_adc_gxl_param = { 
	.resolution = 12,

};



static const struct meson_sar_adc_param meson_sar_adc_g12a_param = {

	.has_bl30_integration = false,

	.clock_rate = 1200000,

	.bandgap_reg = MESON_SAR_ADC_REG11,

	.regmap_config = &meson_sar_adc_regmap_config_gxbb,

	.resolution = 12,

};



static const struct meson_sar_adc_data meson_sar_adc_meson8_data = {

	.param = &meson_sar_adc_meson8_param,

	.name = "meson-meson8-saradc",
@@ -1140,7 +1148,7 @@ static const struct meson_sar_adc_data meson_sar_adc_axg_data = { 
};



static const struct meson_sar_adc_data meson_sar_adc_g12a_data = {

	.param = &meson_sar_adc_gxl_param,

	.param = &meson_sar_adc_g12a_param,

	.name = "meson-g12a-saradc",

};