The Successive Approximation ADC (SARADC) in RK3528 uses the v2
controller and support:
- 10-bit resolution
- Up to 1MS/s sampling rate
- 4 single-ended input channels
- Current consumption: 0.5mA @ 1MS/s
Add support for the 4 channels of 10-bit resolution supported by SARADC
in RK3528.
Signed-off-by: Jonas Karlman <jonas@xxxxxxxxx>
---
drivers/iio/adc/rockchip_saradc.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index a29e54754c8f..2619547d5d6f 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -275,6 +275,21 @@ static const struct rockchip_saradc_data rk3399_saradc_data = {
.power_down = rockchip_saradc_power_down_v1,
};
+static const struct iio_chan_spec rockchip_rk3528_saradc_iio_channels[] = {
+ SARADC_CHANNEL(0, "adc0", 10),
+ SARADC_CHANNEL(1, "adc1", 10),
+ SARADC_CHANNEL(2, "adc2", 10),
+ SARADC_CHANNEL(3, "adc3", 10),
+};
+
+static const struct rockchip_saradc_data rk3528_saradc_data = {
+ .channels = rockchip_rk3528_saradc_iio_channels,
+ .num_channels = ARRAY_SIZE(rockchip_rk3528_saradc_iio_channels),
+ .clk_rate = 1000000,
+ .start = rockchip_saradc_start_v2,
+ .read = rockchip_saradc_read_v2,
+};
+
static const struct iio_chan_spec rockchip_rk3568_saradc_iio_channels[] = {
SARADC_CHANNEL(0, "adc0", 10),
SARADC_CHANNEL(1, "adc1", 10),
@@ -324,6 +339,9 @@ static const struct of_device_id rockchip_saradc_match[] = {
}, {
.compatible = "rockchip,rk3399-saradc",
.data = &rk3399_saradc_data,
+ }, {
+ .compatible = "rockchip,rk3528-saradc",
+ .data = &rk3528_saradc_data,
}, {
.compatible = "rockchip,rk3568-saradc",
.data = &rk3568_saradc_data,
--
2.48.1
