linux-kernel - [PATCH v2 02/16] dt-bindings: iio: adc: add binding for X-Powers AXP PMICs ADC

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Date:   Tue,  9 Jan 2018 10:33:33 +0100
From:   Quentin Schulz <quentin.schulz@...e-electrons.com>
To:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net, robh+dt@...nel.org, mark.rutland@....com,
        wens@...e.org, sre@...nel.org, linux@...linux.org.uk,
        maxime.ripard@...e-electrons.com, lee.jones@...aro.org
Cc:     linux-iio@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        thomas.petazzoni@...e-electrons.com, linux-sunxi@...glegroups.com,
        Quentin Schulz <quentin.schulz@...e-electrons.com>
Subject: [PATCH v2 02/16] dt-bindings: iio: adc: add binding for X-Powers AXP PMICs ADC

X-Powers PMICs have several ADC channels that can be used for different
purposes, e.g. PMIC internal temperature, battery voltage or AC current.

This is the documentation for AXP209, AXP221/223 ADC bindings.

Signed-off-by: Quentin Schulz <quentin.schulz@...e-electrons.com>
---
 Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt | 39 +++++++++-
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt

diff --git a/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt b/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt
new file mode 100644
index 0000000..ed6d04e
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt
@@ -0,0 +1,39 @@
+* X-Powers AXP ADC bindings
+
+Required properties:
+  - compatible: should be one of:
+    - "x-powers,axp20x-adc",
+    - "x-powers,axp22x-adc",
+  - #io-channel-cells: should be 1,
+
+Example:
+
+&axp22x {
+	axp_adc: axp-adc {
+		compatible = "x-powers,axp22x-adc";
+		#io-channel-cells = <1>;
+	};
+};
+
+ADC channels and their indexes per variant:
+
+AXP209
+------
+ 0 | acin_v
+ 1 | acin_i
+ 2 | vbus_v
+ 3 | vbus_i
+ 4 | pmic_temp
+ 5 | gpio0_v
+ 6 | gpio1_v
+ 7 | ipsout_v
+ 8 | batt_v
+ 9 | batt_chrg_i
+10 | batt_dischrg_i
+
+AXP22x
+------
+ 0 | pmic_temp
+ 1 | batt_v
+ 2 | batt_chrg_i
+ 3 | batt_dischrg_i
-- 
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