[PATCH] bus: mhi: pci_generic: Add SAHARA channel support for Foxconn products

From: Slark Xiao

Date: Thu Jun 25 2026 - 23:49:30 EST


Since we have such a requirement for capturing ram dump for PCIe
WWAN devices, we shall enable this channel.
Currently this change shall be applied with QC original uci driver
which was not upstreamed. And I also found someone try to upstream
similar SAHRA uci client. Maybe this would be help for us as well.

Signed-off-by: Slark Xiao <slark_xiao@xxxxxxx>
---
drivers/bus/mhi/host/pci_generic.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index 750da3dbb4c6..59d4c82bafbb 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -491,6 +491,8 @@ static const struct mhi_pci_dev_info mhi_quectel_rm5xx_info = {
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),
+ MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 32, 0),
+ MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 32, 0),
MHI_CHANNEL_CONFIG_UL(4, "DIAG", 32, 1),
MHI_CHANNEL_CONFIG_DL(5, "DIAG", 32, 1),
MHI_CHANNEL_CONFIG_UL(12, "MBIM", 32, 0),
@@ -506,6 +508,8 @@ static const struct mhi_channel_config mhi_foxconn_sdx55_channels[] = {
static const struct mhi_channel_config mhi_foxconn_sdx61_channels[] = {
MHI_CHANNEL_CONFIG_UL(0, "LOOPBACK", 32, 0),
MHI_CHANNEL_CONFIG_DL(1, "LOOPBACK", 32, 0),
+ MHI_CHANNEL_CONFIG_UL_SBL(2, "SAHARA", 32, 0),
+ MHI_CHANNEL_CONFIG_DL_SBL(3, "SAHARA", 32, 0),
MHI_CHANNEL_CONFIG_UL(4, "DIAG", 32, 1),
MHI_CHANNEL_CONFIG_DL(5, "DIAG", 32, 1),
MHI_CHANNEL_CONFIG_UL(12, "MBIM", 32, 0),
--
2.53.0