ASoC: cygnus: Add DT bindings for Broadcom Cygnus audio

Add bindings for audio driver in Broadcom Cygnus.

Signed-off-by: Lori Hikichi <lhikichi@broadcom.com>
Signed-off-by: Simran Rai <ssimran@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 67 insertions, 0 deletions

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 000000000000..b139e66d2a11
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/brcm,cygnus-audio.txt
@@ -0,0 +1,67 @@
+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
+        - assigned-clocks: PLL and leaf clocks
+        - assigned-clock-parents: parent clocks of the assigned clocks
+                (usually the PLL)
+        - assigned-clock-rates: List of clock frequencies of the
+                assigned clocks
+        - 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)
+
+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>;
+                assigned-clocks = <&audiopll BCM_CYGNUS_AUDIOPLL>,
+                                                        <&audiopll BCM_CYGNUS_AUDIOPLL_CH0>,
+                                                        <&audiopll BCM_CYGNUS_AUDIOPLL_CH1>,
+                                                        <&audiopll BCM_CYGNUS_AUDIOPLL_CH2>;
+                assigned-clock-parents = <&audiopll BCM_CYGNUS_AUDIOPLL>;
+                assigned-clock-rates = <1769470191>,
+                                                                <0>,
+                                                                <0>,
+                                                                <0>;
+                clock-names = "ch0_audio", "ch1_audio", "ch2_audio";
+                interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
+
+                ssp0: ssp_port@0 {
+                        reg = <0>;
+                        status = "okay";
+                };
+
+                ssp1: ssp_port@1 {
+                        reg = <1>;
+                        status = "disabled";
+                };
+
+                ssp2: ssp_port@2 {
+                        reg = <2>;
+                        status = "disabled";
+                };
+
+                spdif: spdif_port@3 {
+                        reg = <3>;
+                        status = "disabled";
+                };
+        };