drivers: memc: stm32_xspi_psram: avoid hardcode to XSPI1

The PSRAM could well be plugged to the XSPI2 instead of XSPI1
hence allow configuration of the IOPort and avoid forcing the
ChipSelect in order to allow working on both XSPI1 or XSPI2.

Signed-off-by: Alain Volmat <[email protected]>

Author: Alain Volmat

drivers/memc/memc_stm32_xspi_psram.c

@@ -295,8 +295,12 @@ static int memc_stm32_xspi_psram_init(const struct device *dev)
 		return -EIO;
 	}
 
-	cfg.nCSOverride = HAL_XSPI_CSSEL_OVR_NCS1;
-	cfg.IOPort = HAL_XSPIM_IOPORT_1;
+	if (hxspi->Instance == XSPI1) {
+		cfg.IOPort = HAL_XSPIM_IOPORT_1;
+	} else if (hxspi->Instance == XSPI2) {
+		cfg.IOPort = HAL_XSPIM_IOPORT_2;
+	}
+	cfg.nCSOverride = HAL_XSPI_CSSEL_OVR_DISABLED;
 
 	if (HAL_XSPIM_Config(hxspi, &cfg, HAL_XSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK) {
 		LOG_ERR("XSPIMgr Init failed");