* [PATCH] bus: mhi: host: pci_generic: Add DUN channel configuration
@ 2026-09-25 4:37 Krishna Chaitanya Chundru
2026-09-26 11:40 ` Manivannan Sadhasivam
0 siblings, 1 reply; 2+ messages in thread
From: Krishna Chaitanya Chundru @ 2026-09-25 4:37 UTC (permalink / raw)
To: Manivannan Sadhasivam, Jeff Hugo
Cc: mhi, linux-arm-msm, linux-kernel, Krishna Chaitanya Chundru
Add the DUN uplink (ch32) and downlink (ch33) channel definitions to
the Qualcomm modem MHI channel configuration table.
These channels are used for transporting AT commands over MHI.
Defining them allows the MHI core to create the corresponding DUN MHI
devices and enables userspace access to the modem AT interface through
the associated client driver.
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
---
drivers/bus/mhi/host/pci_generic.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index b636e2c23b4d..cb4e921d9029 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -322,6 +322,8 @@ static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = {
MHI_CHANNEL_CONFIG_DL(15, "QMI", 4, 0),
MHI_CHANNEL_CONFIG_UL(20, "IPCR", 8, 0),
MHI_CHANNEL_CONFIG_DL(21, "IPCR", 8, 0),
+ MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0),
+ MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0),
MHI_CHANNEL_CONFIG_UL_FP(34, "FIREHOSE", 32, 0),
MHI_CHANNEL_CONFIG_DL_FP(35, "FIREHOSE", 32, 0),
MHI_CHANNEL_CONFIG_UL(46, "IP_SW0", 64, 2),
---
base-commit: 165768bb70265b5c38cf0b73fafd75be235f8b14
change-id: 20260925-mhi_dun-abb504fe785f
Best regards,
--
Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] bus: mhi: host: pci_generic: Add DUN channel configuration
2026-09-25 4:37 [PATCH] bus: mhi: host: pci_generic: Add DUN channel configuration Krishna Chaitanya Chundru
@ 2026-09-26 11:40 ` Manivannan Sadhasivam
0 siblings, 0 replies; 2+ messages in thread
From: Manivannan Sadhasivam @ 2026-09-26 11:40 UTC (permalink / raw)
To: Jeff Hugo, Krishna Chaitanya Chundru; +Cc: mhi, linux-arm-msm, linux-kernel
On Fri, 25 Sep 2026 10:07:43 +0530, Krishna Chaitanya Chundru wrote:
> Add the DUN uplink (ch32) and downlink (ch33) channel definitions to
> the Qualcomm modem MHI channel configuration table.
>
> These channels are used for transporting AT commands over MHI.
> Defining them allows the MHI core to create the corresponding DUN MHI
> devices and enables userspace access to the modem AT interface through
> the associated client driver.
>
> [...]
Applied, thanks!
[1/1] bus: mhi: host: pci_generic: Add DUN channel configuration
commit: 710bf7329abf86e37db529f19c8f394099238892
Best regards,
--
மணிவண்ணன் சதாசிவம்
^ permalink raw reply [flat|nested] 2+ messages in thread
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2026-09-25 4:37 [PATCH] bus: mhi: host: pci_generic: Add DUN channel configuration Krishna Chaitanya Chundru
2026-09-26 11:40 ` Manivannan Sadhasivam
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