diff options
| author | Jonas Karlman <jonas@kwiboo.se> | 2025-02-27 18:40:51 +0000 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-03-04 14:45:33 +0000 |
| commit | 8a9aa0bbd615c9b377bd82e671519f0c4cb272dd (patch) | |
| tree | f2032a7989c3cef79c8080b5fdd00e381dc6e196 | |
| parent | d15fc646ccff50addb5b56bc71620691da642af6 (diff) | |
iio: adc: rockchip_saradc: Add support for RK3528
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@kwiboo.se>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20250227184058.2964204-3-jonas@kwiboo.se
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/adc/rockchip_saradc.c | 18 |
1 files changed, 18 insertions, 0 deletions
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), @@ -325,6 +340,9 @@ 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, }, { |