From: martin.blumenstingl@googlemail.com (Martin Blumenstingl)
To: linus-amlogic@lists.infradead.org
Subject: [PATCH v4 3/3] ARM64: dts: meson: meson-gx: add the SAR ADC
Date: Sun, 22 Jan 2017 19:17:14 +0100 [thread overview]
Message-ID: <20170122181714.6259-4-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20170122181714.6259-1-martin.blumenstingl@googlemail.com>
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 F?rber <afaerber@suse.de>
---
arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 8 ++++++++
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 10 ++++++++++
arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 10 ++++++++++
arch/arm64/boot/dts/amlogic/meson-gxm.dtsi | 4 ++++
4 files changed, 32 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index df10d4507ca9..c76a690967f8 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 at 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 at 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 5c22c794ed95..3f70cfcb9682 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -490,6 +490,16 @@
};
};
+&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 afa74455e1de..b0070489e179 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
@@ -340,6 +340,16 @@
};
};
+&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 78a004d13236..fba3c76c78a6 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";
--
2.11.0
next prev parent reply other threads:[~2017-01-22 18:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-22 18:17 [PATCH v4 0/3] Amlogic Meson SAR ADC support Martin Blumenstingl
2017-01-22 18:17 ` [PATCH v4 1/3] Documentation: dt-bindings: add the Amlogic Meson SAR ADC documentation Martin Blumenstingl
2017-01-23 20:44 ` Rob Herring
2017-01-28 12:30 ` Jonathan Cameron
2017-01-22 18:17 ` [PATCH v4 2/3] iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs Martin Blumenstingl
2017-01-28 12:40 ` Jonathan Cameron
2017-01-22 18:17 ` Martin Blumenstingl [this message]
2017-01-30 18:50 ` [PATCH v4 3/3] ARM64: dts: meson: meson-gx: add the SAR ADC Kevin Hilman
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