Add bindings for audio driver in Broadcom Cygnus.
Signed-off-by: Lori Hikichi <lhikichi@xxxxxxxxxxxx>
Signed-off-by: Simran Rai <ssimran@xxxxxxxxxxxx>
Reviewed-by: Ray Jui <rjui@xxxxxxxxxxxx>
Reviewed-by: Scott Branden <sbranden@xxxxxxxxxxxx>
---
.../bindings/sound/brcm,cygnus-audio.txt | 63 ++++++++++++++++++++
1 file changed, 63 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/brcm,cygnus-audio.txt
diff --git a/Documentation/devicetree/bindings/sound/brcm,cygnus-audio.txt b/Documentation/devicetree/bindings/sound/brcm,cygnus-audio.txt
new file mode 100644
index 0000000..73cddb3
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/brcm,cygnus-audio.txt
@@ -0,0 +1,63 @@
+BROADCOM Cygnus Audio I2S/TDM/SPDIF controller
+
+Required properties:
+ - compatible : "brcm,cygnus-audio"
+ - #address-cells: 32bit valued, 1 cell.
+ - #size-cells: 32bit valued, 0 cell.
+ - reg : Should contain audio registers location and length
+ - reg-names: names of the registers listed in "reg" property
+ Valid names are "aud" and "i2s_in". "aud" contains a
+ set of DMA, I2S_OUT and SPDIF registers. "i2s_in" contains
+ a set of I2S_IN registers.
+ - clocks: PLL and leaf clocks used by audio ports
+ - clock-names: names of 3 leaf clocks used by audio ports
+ Valid names are "ch0_audio", "ch1_audio", "ch2_audio"
+ - interrupts: audio DMA interrupt number
+
+SSP Subnode properties:
+- reg: The index of ssp port interface to use
+ Valid value are 0, 1, 2, or 3 (for spdif)
+- channel-group: Surround sound grouping that controls which channel
+ outputs belong to a group, specifically useful in Multi-channel
+ Interfaces grouping of serial port. In multi-channel stereo, use
+ "2_0", in 3.1 multi-channel grouping, use "3_1" and in 5.1
+ multi-channel grouping, use "5_1".
+
+
+Example:
+ cygnus_audio: audio@180ae000 {
+ compatible = "brcm,cygnus-audio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x180ae000 0xafd>, <0x180aec00 0x1f8>;
+ reg-names = "aud", "i2s_in";
+ clocks = <&audiopll BCM_CYGNUS_AUDIOPLL_CH0>,
+ <&audiopll BCM_CYGNUS_AUDIOPLL_CH1>,
+ <&audiopll BCM_CYGNUS_AUDIOPLL_CH2>;
+ clock-names = "ch0_audio", "ch1_audio", "ch2_audio";
+ interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
+
+ ssp0: ssp_port@0 {
+ reg = <0>;
+ channel-group = "2_0"; /* Use 2_0, 3_1, 5_1 */
+ status = "okay";
+ };
+
+ ssp1: ssp_port@1 {
+ reg = <1>;
+ channel-group = "2_0"; /* Use 2_0, 3_1, 5_1 */
+ status = "disabled";
+ };
+
+ ssp2: ssp_port@2 {
+ reg = <2>;
+ channel-group = "2_0"; /* Use 2_0, 3_1, 5_1 */
+ status = "disabled";
+ };
+
+ spdif: spdif_port@3 {
+ reg = <3>;
+ channel-group = "2_0"; /* Use 2_0, 3_1, 5_1 */
+ status = "disabled";
+ };
+ };
--
1.7.9.5
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