drivers: clock_stm32_ll_mp2: add i2c clock

Add I2C clocks rate reading to the STM32MP2 clock driver.

Signed-off-by: Tanguy Raufflet <tanguy.raufflet@savoirfairelinux.com>

Author: Tanguy Raufflet

drivers/clock_control/clock_stm32_ll_mp2.c

@@ -72,6 +72,24 @@ static int stm32_clock_control_get_subsys_rate(const struct device *dev,
 	case STM32_CLOCK_PERIPH_UART9:
 		*rate = LL_RCC_GetUARTClockFreq(LL_RCC_UART9_CLKSOURCE);
 		break;
+	case STM32_CLOCK_PERIPH_I2C1:
+	case STM32_CLOCK_PERIPH_I2C2:
+		*rate = LL_RCC_GetI2CClockFreq(LL_RCC_I2C12_I3C12_CLKSOURCE);
+		break;
+	case STM32_CLOCK_PERIPH_I2C4:
+	case STM32_CLOCK_PERIPH_I2C6:
+		*rate = LL_RCC_GetI2CClockFreq(LL_RCC_I2C46_CLKSOURCE);
+		break;
+	case STM32_CLOCK_PERIPH_I2C3:
+	case STM32_CLOCK_PERIPH_I2C5:
+		*rate = LL_RCC_GetI2CClockFreq(LL_RCC_I2C35_I3C3_CLKSOURCE);
+		break;
+	case STM32_CLOCK_PERIPH_I2C7:
+		*rate = LL_RCC_GetI2CClockFreq(LL_RCC_I2C7_CLKSOURCE);
+		break;
+	case STM32_CLOCK_PERIPH_I2C8:
+		*rate = LL_RCC_GetI2CClockFreq(LL_RCC_I2C8_CLKSOURCE);
+		break;
 	default:
 		return -ENOTSUP;
 	}