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Commit ae549a72 authored by David Wu's avatar David Wu Committed by Jonathan Cameron
Browse files

iio: adc: rockchip_saradc: add saradc support for rk3399 



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

Signed-off-by: default avatarDavid Wu <david.wu@rock-chips.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 722fc316

Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt

+5 −1
Original line number Diff line number Diff line 
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

drivers/iio/adc/rockchip_saradc.c

+19 −0
Original line number Diff line number Diff line
@@ -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,

	},

	{},

};