[PATCH v3 2/8] mfd: ac100: Add device tree bindings for X-Powers AC100 codec/RTC combo IC

Chen-Yu Tsai
2016-06-20T02:52:12Z

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
Changes since v2:

- Fix interrupt line for ac100_codec in provided example.

---
Documentation/devicetree/bindings/mfd/ac100.txt | 42 +++++++++++++++++++++++++
1 file changed, 42 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/ac100.txt

diff --git a/Documentation/devicetree/bindings/mfd/ac100.txt b/Documentation/devicetree/bindings/mfd/ac100.txt
new file mode 100644
index 000000000000..a793954bb952
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/ac100.txt
@@ -0,0 +1,42 @@
+X-Powers AC100 Codec/RTC IC device tree bindings
+
+AC100 is a audio codec and RTC subsystem combo IC. The 2 parts are
+separated, including power supplies and interrupt lines, but share
+a common register address space and host interface.
+
+Required properties:
+- compatible: "x-powers,ac100"
+- reg: The I2C slave address or RSB hardware address for the chip
+- sub-nodes:
+ - codec
+ - compatible: "x-powers,ac100-codec"
+ - interrupt-parent: The parent interrupt controller
+ - interrupts: SoC NMI / GPIO interrupt connected to the IRQ_AUDIO pin
+ - rtc
+ - compatible: "x-powers,ac100-rtc"
+ - interrupt-parent: The parent interrupt controller
+ - interrupts: SoC NMI / GPIO interrupt connected to the IRQ_RTC pin
+ - #clock-cells: shall be 1
+ - clock-output-names: "cko1_rtc", "cko2_rtc", "cko3_rtc"
+ - see clock/clock-bindings.txt for common clock bindings
+
+Example:
+
+ac100: codec at e89 {
+ compatible = "x-powers,ac100";
+ reg = <0xe89>;
+
+ ac100_codec {
+ compatible = "x-powers,ac100-codec";
+ interrupt-parent = <&r_pio>;
+ interrupts = <0 9 IRQ_TYPE_LEVEL_LOW>; /* PL9 */
+ };
+
+ ac100_rtc {
+ compatible = "x-powers,ac100-rtc";
+ interrupt-parent = <&nmi_intc>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ #clock-cells = <1>;
+ clock-output-names = "cko1_rtc", "cko2_rtc", "cko3_rtc";
+ };
+};
--
2.8.1