diff --git a/drivers/bus/mhi/host/init.c b/drivers/bus/mhi/host/init.c
index f72fcb66f408a..f78aefd2d7a36 100644
--- a/drivers/bus/mhi/host/init.c
+++ b/drivers/bus/mhi/host/init.c
@@ -759,7 +759,7 @@ static int parse_ch_cfg(struct mhi_controller *mhi_cntrl,
 	 * so to avoid any memory possible allocation failures, vzalloc is
 	 * used here
 	 */
-	mhi_cntrl->mhi_chan = vzalloc(mhi_cntrl->max_chan *
+	mhi_cntrl->mhi_chan = vcalloc(mhi_cntrl->max_chan,
 				      sizeof(*mhi_cntrl->mhi_chan));
 	if (!mhi_cntrl->mhi_chan)
 		return -ENOMEM;
diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index db0a0b062d8e0..fcd80bc92978a 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -212,6 +212,19 @@ struct mhi_pci_dev_info {
 		.offload_channel = false,	\
 	}
 
+#define MHI_EVENT_CONFIG_SW_DATA(ev_ring, el_count) \
+	{					\
+		.num_elements = el_count,	\
+		.irq_moderation_ms = 0,		\
+		.irq = (ev_ring) + 1,		\
+		.priority = 1,			\
+		.mode = MHI_DB_BRST_DISABLE,	\
+		.data_type = MHI_ER_DATA,	\
+		.hardware_event = false,	\
+		.client_managed = false,	\
+		.offload_channel = false,	\
+	}
+
 #define MHI_EVENT_CONFIG_HW_DATA(ev_ring, el_count, ch_num) \
 	{					\
 		.num_elements = el_count,	\
@@ -237,8 +250,10 @@ static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = {
 	MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(21, "IPCR", 8, 0),
 	MHI_CHANNEL_CONFIG_UL_FP(34, "FIREHOSE", 32, 0),
 	MHI_CHANNEL_CONFIG_DL_FP(35, "FIREHOSE", 32, 0),
-	MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 2),
-	MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 3),
+	MHI_CHANNEL_CONFIG_UL(46, "IP_SW0", 64, 2),
+	MHI_CHANNEL_CONFIG_DL(47, "IP_SW0", 64, 3),
+	MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 4),
+	MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 5),
 };
 
 static struct mhi_event_config modem_qcom_v1_mhi_events[] = {
@@ -246,9 +261,12 @@ static struct mhi_event_config modem_qcom_v1_mhi_events[] = {
 	MHI_EVENT_CONFIG_CTRL(0, 64),
 	/* DIAG dedicated event ring */
 	MHI_EVENT_CONFIG_DATA(1, 128),
+	/* Software channels dedicated event ring */
+	MHI_EVENT_CONFIG_SW_DATA(2, 64),
+	MHI_EVENT_CONFIG_SW_DATA(3, 64),
 	/* Hardware channels request dedicated hardware event rings */
-	MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
-	MHI_EVENT_CONFIG_HW_DATA(3, 2048, 101)
+	MHI_EVENT_CONFIG_HW_DATA(4, 1024, 100),
+	MHI_EVENT_CONFIG_HW_DATA(5, 2048, 101)
 };
 
 static const struct mhi_controller_config modem_qcom_v1_mhiv_config = {
@@ -334,6 +352,16 @@ static const struct mhi_pci_dev_info mhi_quectel_em1xx_info = {
 	.sideband_wake = true,
 };
 
+static const struct mhi_pci_dev_info mhi_quectel_rm5xx_info = {
+	.name = "quectel-rm5xx",
+	.edl = "qcom/prog_firehose_sdx6x.elf",
+	.config = &modem_quectel_em1xx_config,
+	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
+	.dma_data_width = 32,
+	.mru_default = 32768,
+	.sideband_wake = true,
+};
+
 static const struct mhi_channel_config mhi_foxconn_sdx55_channels[] = {
 	MHI_CHANNEL_CONFIG_UL(0, "LOOPBACK", 32, 0),
 	MHI_CHANNEL_CONFIG_DL(1, "LOOPBACK", 32, 0),
@@ -573,6 +601,11 @@ static const struct pci_device_id mhi_pci_id_table[] = {
 		.driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
 	{ PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x1002), /* EM160R-GL (sdx24) */
 		.driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
+	/* RM520N-GL (sdx6x), eSIM */
+	{ PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x1004),
+		.driver_data = (kernel_ulong_t) &mhi_quectel_rm5xx_info },
+	{ PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x100d), /* EM160R-GL (sdx24) */
+		.driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
 	{ PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x2001), /* EM120R-GL for FCCL (sdx24) */
 		.driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
 	/* T99W175 (sdx55), Both for eSIM and Non-eSIM */
@@ -605,6 +638,12 @@ static const struct pci_device_id mhi_pci_id_table[] = {
 	/* T99W510 (sdx24), variant 3 */
 	{ PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0f2),
 		.driver_data = (kernel_ulong_t) &mhi_foxconn_sdx24_info },
+	/* DW5932e-eSIM (sdx62), With eSIM */
+	{ PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0f5),
+		.driver_data = (kernel_ulong_t) &mhi_foxconn_sdx65_info },
+	/* DW5932e (sdx62), Non-eSIM */
+	{ PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0f9),
+		.driver_data = (kernel_ulong_t) &mhi_foxconn_sdx65_info },
 	/* MV31-W (Cinterion) */
 	{ PCI_DEVICE(PCI_VENDOR_ID_THALES, 0x00b3),
 		.driver_data = (kernel_ulong_t) &mhi_mv31_info },
diff --git a/drivers/bus/mhi/host/pm.c b/drivers/bus/mhi/host/pm.c
index 083459028a4b8..8a4362d75fc43 100644
--- a/drivers/bus/mhi/host/pm.c
+++ b/drivers/bus/mhi/host/pm.c
@@ -470,6 +470,10 @@ static void mhi_pm_disable_transition(struct mhi_controller *mhi_cntrl)
 
 	/* Trigger MHI RESET so that the device will not access host memory */
 	if (!MHI_PM_IN_FATAL_STATE(mhi_cntrl->pm_state)) {
+		/* Skip MHI RESET if in RDDM state */
+		if (mhi_cntrl->rddm_image && mhi_get_exec_env(mhi_cntrl) == MHI_EE_RDDM)
+			goto skip_mhi_reset;
+
 		dev_dbg(dev, "Triggering MHI Reset in device\n");
 		mhi_set_mhi_state(mhi_cntrl, MHI_STATE_RESET);
 
@@ -495,6 +499,7 @@ static void mhi_pm_disable_transition(struct mhi_controller *mhi_cntrl)
 		}
 	}
 
+skip_mhi_reset:
 	dev_dbg(dev,
 		 "Waiting for all pending event ring processing to complete\n");
 	mhi_event = mhi_cntrl->mhi_event;