[LEDE-DEV] sunxi: Bananapi/pro audio codec default disabled in device-tree

[xige]

Hi, All

I found sun7i bananapi/pro audio codec disabled in device-tree, I make a patch:

--- a/arch/arm/boot/dts/sun7i-a20-bananapi.dts
+++ b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
@@ -106,6 +106,10 @@
                >;
 };

+&codec {
+    status = "okay";
+};
+
 &ehci0 {
        status = "okay";
 };


But Audio codec also did not work. During booting "ALSA device list" is empty,  after boot  there is “cards” “card0” in /proc/asound. So, I change kernel config: 

--- a/target/linux/sunxi/config-4.4
+++ b/target/linux/sunxi/config-4.4
@@ -462,12 +462,29 @@ CONFIG_SMP=y
 CONFIG_SMP_ON_UP=y
 CONFIG_SND=y
 CONFIG_SND_COMPRESS_OFFLOAD=y
+CONFIG_SND_DEBUG=y
+# CONFIG_SND_DEBUG_VERBOSE is not set
+CONFIG_SND_DMAENGINE_PCM=y
+CONFIG_SND_HWDEP=y
 CONFIG_SND_JACK=y
+CONFIG_SND_MIXER_OSS=y
 CONFIG_SND_PCM=y
+CONFIG_SND_PCM_OSS=y
+CONFIG_SND_PCM_TIMER=y
+CONFIG_SND_SEQUENCER=y
+CONFIG_SND_SEQUENCER_OSS=y
+CONFIG_SND_SEQ_DUMMY=y
 CONFIG_SND_SOC=y
+CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM=y
 CONFIG_SND_SOC_I2C_AND_SPI=y
+CONFIG_SND_SUN4I_CODEC=y
+CONFIG_SND_TIMER=y
 # CONFIG_SND_USB is not set
+CONFIG_SND_VERBOSE_PRINTK=y
+# CONFIG_SND_VIRMIDI is not set
 CONFIG_SOUND=y
+CONFIG_SOUND_OSS_CORE=y
+CONFIG_SOUND_OSS_CORE_PRECLAIM=y
 CONFIG_SPARSE_IRQ=y
 CONFIG_SPI=y
 CONFIG_SPI_MASTER=y

After boot device list is not empty, but did not work.


Cheers
wei