clock: driver/clock_control: Add sai clock support for syscon.

Add sai clock support for syscon.

Signed-off-by: Qiang Zhang <[email protected]>

Author: mcuxted

drivers/clock_control/clock_control_mcux_syscon.c

@@ -412,6 +412,21 @@ static int mcux_lpc_syscon_clock_control_get_subsys_rate(const struct device *de
 #endif
 #endif /* CONFIG_MEMC_MCUX_FLEXSPI */
 
+#if defined(CONFIG_I2S_MCUX_SAI)
+	case MCUX_SAI0_CLK:
+#if (FSL_FEATURE_SOC_I2S_COUNT == 1)
+		*rate = CLOCK_GetSaiClkFreq();
+#else
+		*rate = CLOCK_GetSaiClkFreq(0);
+#endif
+		break;
+#if (FSL_FEATURE_SOC_I2S_COUNT == 2)
+	case MCUX_SAI1_CLK:
+		*rate = CLOCK_GetSaiClkFreq(1);
+		break;
+#endif
+#endif /* CONFIG_I2S_MCUX_SAI */
+
 #ifdef CONFIG_ETH_NXP_ENET_QOS
 	case MCUX_ENET_QOS_CLK:
 		*rate = CLOCK_GetFreq(kCLOCK_BusClk);

include/zephyr/dt-bindings/clock/mcux_lpc_syscon_clock.h

@@ -115,4 +115,7 @@
 #define MCUX_XSPI1_CLK MCUX_LPC_CLK_ID(0x15, 0x01)
 #define MCUX_XSPI2_CLK MCUX_LPC_CLK_ID(0x15, 0x02)
 
+#define MCUX_SAI0_CLK MCUX_LPC_CLK_ID(0x16, 0x00)
+#define MCUX_SAI1_CLK MCUX_LPC_CLK_ID(0x16, 0x01)
+
 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_MCUX_LPC_SYSCON_H_ */