arc: axs10x: Add DT bindings for I2S audio playback

This patch adds the necessary DT bindings to get HDMI audio
output in ARC AXS10x SDP. The bindings for I2S controller were
added as well as the bindings for simple audio card.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Carlos Palminha <palminha@synopsys.com>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: devicetree@vger.kernel.org
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi
index d6c1bbc98ac3b40caa94e60420996081bdafe44c..9d882b1a3e1c7c1b620c900cfa3969a5b50250ca 100644 (file)
--- a/arch/arc/boot/dts/axs10x_mb.dtsi
+++ b/arch/arc/boot/dts/axs10x_mb.dtsi
@@ -149,12 +149,13 @@
                        interrupts = <14>;
                };
 
-               i2c@0x1e000 {
-                       compatible = "snps,designware-i2c";
+               i2s: i2s@1e000 {
+                       compatible = "snps,designware-i2s";
                        reg = <0x1e000 0x100>;
-                       clock-frequency = <400000>;
-                       clocks = <&i2cclk>;
+                       clocks = <&i2sclk 0>;
+                       clock-names = "i2sclk";
                        interrupts = <15>;
+                       #sound-dai-cells = <0>;
                };
 
                i2c@0x1f000 {
@@ -174,6 +175,7 @@
                                adi,input-colorspace = "rgb";
                                adi,input-clock = "1x";
                                adi,clock-delay = <0x03>;
+                               #sound-dai-cells = <0>;
 
                                ports {
                                        #address-cells = <1>;
@@ -295,5 +297,17 @@
                                };
                        };
                };
+
+               sound_playback {
+                       compatible = "simple-audio-card";
+                       simple-audio-card,name = "AXS10x HDMI Audio";
+                       simple-audio-card,format = "i2s";
+                       simple-audio-card,cpu {
+                               sound-dai = <&i2s>;
+                       };
+                       simple-audio-card,codec {
+                               sound-dai = <&adv7511>;
+                       };
+               };
        };
 };