From 44fb25d031065fc846c0f97e37456a792312a7d1 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Fri, 8 Jul 2016 22:33:36 +0800 Subject: [PATCH] mfd: ac100: Add device tree bindings for X-Powers AC100 codec/RTC combo IC The AC100 is a multifunction device with an audio codec subsystem and an RTC subsystem. These two subsystems share a common register space and host interface. Signed-off-by: Chen-Yu Tsai Acked-by: Rob Herring Signed-off-by: Lee Jones --- .../devicetree/bindings/mfd/ac100.txt | 54 +++++++++++++++++++ 1 file changed, 54 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..b8ef00667599 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/ac100.txt @@ -0,0 +1,54 @@ +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 + - #clock-cells: Shall be 0 + - clock-output-names: "4M_adda" + + - see clock/clock-bindings.txt for common clock bindings + + - rtc + - compatible: "x-powers,ac100-rtc" + - interrupt-parent: The parent interrupt controller + - interrupts: SoC NMI / GPIO interrupt connected to the + IRQ_RTC pin + - clocks: A phandle to the codec's "4M_adda" clock + - #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@e89 { + compatible = "x-powers,ac100"; + reg = <0xe89>; + + ac100_codec: codec { + compatible = "x-powers,ac100-codec"; + interrupt-parent = <&r_pio>; + interrupts = <0 9 IRQ_TYPE_LEVEL_LOW>; /* PL9 */ + #clock-cells = <0>; + clock-output-names = "4M_adda"; + }; + + ac100_rtc: rtc { + compatible = "x-powers,ac100-rtc"; + interrupt-parent = <&nmi_intc>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; + clocks = <&ac100_codec>; + #clock-cells = <1>; + clock-output-names = "cko1_rtc", "cko2_rtc", "cko3_rtc"; + }; +}; -- GitLab