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iio: adc: rockchip_saradc: add saradc support for rk3399

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The ADC is a 6-channel signal-ended 10-bit Successive
Approximation Register (SAR) A/D Converter.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
David Wu 2016-03-16 01:44:15 +08:00 committed by Jonathan Cameron
parent 722fc31663
commit ae549a7221
2 changed files with 24 additions and 1 deletions
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6
Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
View File

@ -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

19
drivers/iio/adc/rockchip_saradc.c
View File

@ -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,
},
{},
};