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: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
---
drivers/iio/adc/meson_saradc.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
index 66dc452d643a..e140db3e4016 100644
--- a/drivers/iio/adc/meson_saradc.c
+++ b/drivers/iio/adc/meson_saradc.c
@@ -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",
};
--
2.32.0
