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authorMartin Blumenstingl <martin.blumenstingl@googlemail.com>2017-01-22 21:17:14 +0300
committerKevin Hilman <khilman@baylibre.com>2017-01-30 21:44:04 +0300
commitbd80ef5ed46233d90f216805ff40aba326ff1bdd (patch)
tree980f6e5d81bd0a66bfc3c7434aa631cbba6a34f2
parent249a2243e97edcd2cb0bef01a934d4ba21fb167f (diff)
downloadlinux-bd80ef5ed46233d90f216805ff40aba326ff1bdd.tar.xz
ARM64: dts: meson: meson-gx: add the SAR ADC
Add the SAR ADC to meson-gxbb.dtsi and meson-gxl.dtsi. GXBB provides a 10-bit ADC while GXL and GXM provide a 12-bit ADC. Some boards use resistor ladder buttons connected through one of the ADC channels. On newer devices (GXL and GXM) some boards use pull-ups/downs to change the resistance (and thus the ADC value) on one of the ADC channels to indicate the board revision. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Tested-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
-rw-r--r--arch/arm64/boot/dts/amlogic/meson-gx.dtsi8
-rw-r--r--arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi10
-rw-r--r--arch/arm64/boot/dts/amlogic/meson-gxl.dtsi10
-rw-r--r--arch/arm64/boot/dts/amlogic/meson-gxm.dtsi4
4 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index 9110dc1a2481..f100d0b013b4 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -237,6 +237,14 @@
status = "disabled";
};
+ saradc: adc@8680 {
+ compatible = "amlogic,meson-saradc";
+ reg = <0x0 0x8680 0x0 0x34>;
+ #io-channel-cells = <1>;
+ interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;
+ status = "disabled";
+ };
+
pwm_ef: pwm@86c0 {
compatible = "amlogic,meson-gx-pwm", "amlogic,meson-gxbb-pwm";
reg = <0x0 0x086c0 0x0 0x10>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index 39a774ad83ce..04b3324bc132 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -490,6 +490,16 @@
clocks = <&clkc CLKID_I2C>;
};
+&saradc {
+ compatible = "amlogic,meson-gxbb-saradc", "amlogic,meson-saradc";
+ clocks = <&xtal>,
+ <&clkc CLKID_SAR_ADC>,
+ <&clkc CLKID_SANA>,
+ <&clkc CLKID_SAR_ADC_CLK>,
+ <&clkc CLKID_SAR_ADC_SEL>;
+ clock-names = "clkin", "core", "sana", "adc_clk", "adc_sel";
+};
+
&sd_emmc_a {
clocks = <&clkc CLKID_SD_EMMC_A>,
<&xtal>,
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
index 5f1100af72b1..fe11b5fc61f7 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
@@ -347,6 +347,16 @@
clocks = <&clkc CLKID_I2C>;
};
+&saradc {
+ compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc";
+ clocks = <&xtal>,
+ <&clkc CLKID_SAR_ADC>,
+ <&clkc CLKID_SANA>,
+ <&clkc CLKID_SAR_ADC_CLK>,
+ <&clkc CLKID_SAR_ADC_SEL>;
+ clock-names = "clkin", "core", "sana", "adc_clk", "adc_sel";
+};
+
&sd_emmc_a {
clocks = <&clkc CLKID_SD_EMMC_A>,
<&xtal>,
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi
index 4c55665a253f..ddea7305c644 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi
@@ -117,6 +117,10 @@
};
};
+&saradc {
+ compatible = "amlogic,meson-gxm-saradc", "amlogic,meson-saradc";
+};
+
&scpi_dvfs {
clock-indices = <0 1>;
clock-output-names = "vbig", "vlittle";