The ADC is a 6-channel signal-ended 10-bit Successive
Approximation Register (SAR) A/D Converter.
Signed-off-by: David Wu <david.wu@xxxxxxxxxxxxxx>
---
.../devicetree/bindings/iio/adc/rockchip-saradc.txt | 6 +++++-
drivers/iio/adc/rockchip_saradc.c | 19 +++++++++++++++++++
2 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
index a9a5fe1..bf99e2f 100644
--- a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
@@ -1,7 +1,11 @@
Rockchip Successive Approximation Register (SAR) A/D Converter bindings
Required properties:
-- compatible: Should be "rockchip,saradc" or "rockchip,rk3066-tsadc"
+- compatible: should be "rockchip,<name>-saradc" or "rockchip,rk3066-tsadc"
+ - "rockchip,saradc": for rk3188, rk3288
+ - "rockchip,rk3066-tsadc": for rk3036
+ - "rockchip,rk3399-saradc": for rk3399
+
- reg: physical base address of the controller and length of memory mapped
region.
- interrupts: The interrupt number to the cpu. The interrupt specifier format
diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index 9c311c1..f9ad6c2 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -159,6 +159,22 @@ static const struct rockchip_saradc_data rk3066_tsadc_data = {
.clk_rate = 50000,
};
+static const struct iio_chan_spec rockchip_rk3399_saradc_iio_channels[] = {
+ ADC_CHANNEL(0, "adc0"),
+ ADC_CHANNEL(1, "adc1"),
+ ADC_CHANNEL(2, "adc2"),
+ ADC_CHANNEL(3, "adc3"),
+ ADC_CHANNEL(4, "adc4"),
+ ADC_CHANNEL(5, "adc5"),
+};
+
+static const struct rockchip_saradc_data rk3399_saradc_data = {
+ .num_bits = 10,
+ .channels = rockchip_rk3399_saradc_iio_channels,
+ .num_channels = ARRAY_SIZE(rockchip_rk3399_saradc_iio_channels),
+ .clk_rate = 1000000,
+};
+
static const struct of_device_id rockchip_saradc_match[] = {
{
.compatible = "rockchip,saradc",
@@ -166,6 +182,9 @@ static const struct of_device_id rockchip_saradc_match[] = {
}, {
.compatible = "rockchip,rk3066-tsadc",
.data = &rk3066_tsadc_data,
+ }, {
+ .compatible = "rockchip,rk3399-saradc",
+ .data = &rk3399_saradc_data,
},
{},
};
--
1.9.1
--
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