ARM: dts: am335x-boneblack: Add HDMI audio support

Add HDMI audio support. Adds mcasp0_pins, clk_mcasp0_fixed,
clk_mcasp0, mcasp0, sound node, and updates the tda19988 node to
follow the new binding.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

1 files changed, 67 insertions, 4 deletions

diff --git a/arch/arm/boot/dts/am335x-boneblack.dts b/arch/arm/boot/dts/am335x-boneblack.dts
index 55c0e954b146..6bbb1fee0868 100644
--- a/arch/arm/boot/dts/am335x-boneblack.dts
+++ b/arch/arm/boot/dts/am335x-boneblack.dts
@@ -9,6 +9,7 @@
 
 #include "am33xx.dtsi"
 #include "am335x-bone-common.dtsi"
+#include <dt-bindings/display/tda998x.h>
 
 / {
         model = "TI AM335x BeagleBone Black";
@@ -64,6 +65,16 @@
                         AM33XX_IOPAD(0x9b0, PIN_OUTPUT_PULLDOWN | MUX_MODE3)    /* xdma_event_intr0 */
                 >;
         };
+
+        mcasp0_pins: mcasp0_pins {
+                pinctrl-single,pins = <
+                        AM33XX_IOPAD(0x9ac, PIN_INPUT_PULLUP | MUX_MODE0) /* mcasp0_ahcklx.mcasp0_ahclkx */
+                        AM33XX_IOPAD(0x99c, PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2*/
+                        AM33XX_IOPAD(0x994, PIN_OUTPUT_PULLUP | MUX_MODE0) /* mcasp0_fsx.mcasp0_fsx */
+                        AM33XX_IOPAD(0x990, PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* mcasp0_aclkx.mcasp0_aclkx */
+                        AM33XX_IOPAD(0x86c, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a11.GPIO1_27 */
+                >;
+        };
 };
 
 &lcdc {
@@ -76,16 +87,22 @@
 };
 
 &i2c0 {
-        tda19988 {
+        tda19988: tda19988 {
                 compatible = "nxp,tda998x";
                 reg = <0x70>;
+
                 pinctrl-names = "default", "off";
                 pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
                 pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;
 
-                port {
-                        hdmi_0: endpoint@0 {
-                                remote-endpoint = <&lcdc_0>;
+                #sound-dai-cells = <0>;
+                audio-ports = < TDA998x_I2S     0x03>;
+
+                ports {
+                        port@0 {
+                                hdmi_0: endpoint@0 {
+                                        remote-endpoint = <&lcdc_0>;
+                                };
                         };
                 };
         };
@@ -94,3 +111,49 @@
 &rtc {
         system-power-controller;
 };
+
+&mcasp0 {
+        #sound-dai-cells = <0>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&mcasp0_pins>;
+        status = "okay";
+        op-mode = <0>;  /* MCASP_IIS_MODE */
+        tdm-slots = <2>;
+        serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
+                        0 0 1 0
+                >;
+        tx-num-evt = <32>;
+        rx-num-evt = <32>;
+};
+
+/ {
+        clk_mcasp0_fixed: clk_mcasp0_fixed {
+                #clock-cells = <0>;
+                compatible = "fixed-clock";
+                clock-frequency = <24576000>;
+        };
+
+        clk_mcasp0: clk_mcasp0 {
+                #clock-cells = <0>;
+                compatible = "gpio-gate-clock";
+                clocks = <&clk_mcasp0_fixed>;
+                enable-gpios = <&gpio1 27 0>; /* BeagleBone Black Clk enable on GPIO1_27 */
+        };
+
+        sound {
+                compatible = "simple-audio-card";
+                simple-audio-card,name = "TI BeagleBone Black";
+                simple-audio-card,format = "i2s";
+                simple-audio-card,bitclock-master = <&dailink0_master>;
+                simple-audio-card,frame-master = <&dailink0_master>;
+
+                dailink0_master: simple-audio-card,cpu {
+                        sound-dai = <&mcasp0>;
+                        clocks = <&clk_mcasp0>;
+                };
+
+                simple-audio-card,codec {
+                        sound-dai = <&tda19988>;
+                };
+        };
+};