soc: soundwire: support 600KHz bus clock scaling

Support 600KHz soundwire bus clock scaling for low power
voice activation usecases.

Change-Id: I46f2697b9e17785396542c9f5ec55ad5b9f6d2f5
Signed-off-by: Meng Wang <[email protected]>

asoc/lahaina-port-config.h

@@ -60,14 +60,22 @@ static struct port_params tx_frame_params_shima[SWR_MSTR_PORT_LEN] = {
 
 /* 4.8 MHz clock */
 static struct port_params tx_frame_params_4p8MHz[SWR_MSTR_PORT_LEN] = {
-	{3,  1,  0,  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0, 0x00, 0x00}, /* TX1 */
+	{7,  1,  0,  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0, 0x00, 0x00}, /* TX1 */
 	{3,  0,  0,  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 1, 0x00, 0x00}, /* TX2 */
 	{3,  2,  0,  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0, 0x00, 0x00}, /* TX3 */
 };
 
+/* 0.6 MHz clock */
+static struct port_params tx_frame_params_0p6MHz[SWR_MSTR_PORT_LEN] = {
+	{1,  1,  0,  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0, 0x00, 0x00}, /* TX1 */
+	{1,  1,  0,  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0, 0x00, 0x00}, /* TX2 */
+	{1,  1,  0,  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0, 0x00, 0x00}, /* TX3 */
+};
+
 static struct swr_mstr_port_map sm_port_map[] = {
 	{TX_MACRO, SWR_UC0, tx_frame_params_default},
 	{TX_MACRO, SWR_UC1, tx_frame_params_4p8MHz},
+	{TX_MACRO, SWR_UC2, tx_frame_params_0p6MHz},
 	{RX_MACRO, SWR_UC0, rx_frame_params_default},
 	{RX_MACRO, SWR_UC1, rx_frame_params_dsd},
 	{WSA_MACRO, SWR_UC0, wsa_frame_params_default},

include/soc/swr-common.h

@@ -13,6 +13,7 @@
 enum {
 	SWR_UC0 = 0,
 	SWR_UC1,
+	SWR_UC2,
 	SWR_UC_MAX,
 };