[PATCH v4 2/3] ath10k: Add device-tree quirk to skip host cap QMI requests

[Dmitry Baryshkov]

On Wed, Mar 25, 2026 at 06:57:16PM +0100, David Heidelberg via B4 Relay wrote:
> From: Amit Pundir <amit.pundir at linaro.org>
> 
> Some firmware versions do not support the host capability QMI request.
> Since this request occurs before firmware-N.bin and board-M.bin are
> loaded, the quirk cannot be expressed in the firmware itself.


Acked-by: Dmitry Baryshkov <dmitry.baryshkov at oss.qualcomm.com>

Jeff, to my knowledge this is the best approach that we have to solve
the issue on those devices.

> 
> The root cause is unclear, but there appears to be a generation of
> firmware that lacks host capability support.
> 
> Without this quirk, ath10k_qmi_host_cap_send_sync() returns
> QMI_ERR_MALFORMED_MSG_V01 before loading the firmware. This error is not
> fatal - Wi-Fi services still come up successfully if the request is simply
> skipped.
> 
> Add a device-tree quirk to skip the host capability QMI request on devices
> whose firmware does not support it.
> 
> For example, firmware build
> "QC_IMAGE_VERSION_STRING=WLAN.HL.2.0.c3-00257-QCAHLSWMTPLZ-1"
> on Xiaomi Poco F1 phone requires this quirk.
> 
> Suggested-by: Bjorn Andersson <andersson at kernel.org>
> Signed-off-by: Amit Pundir <amit.pundir at linaro.org>
> Signed-off-by: David Heidelberg <david at ixit.cz>
> ---
>  drivers/net/wireless/ath/ath10k/qmi.c  | 13 ++++++++++---
>  drivers/net/wireless/ath/ath10k/snoc.c |  3 +++
>  drivers/net/wireless/ath/ath10k/snoc.h |  1 +
>  3 files changed, 14 insertions(+), 3 deletions(-)

-- 
With best wishes
Dmitry