From: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Hi,
here is the second version of the qcom,ath10k-calibration-variant support
patchset. I think the ath10k patch describes these changes the best:
Board Data File (BDF) is loaded upon driver boot-up procedure. The right
board data file is identified on QCA4019 using bus, bmi-chip-id and
bmi-board-id.
The problem, however, can occur when the (default) board data file cannot
fulfill with the vendor requirements and it is necessary to use a different
board data file.
This problem was solved for SMBIOS by adding a special SMBIOS type 0xF8.
Something similar has to be provided for systems without SMBIOS but with
device trees. No solution was specified by QCA and therefore a new one has
to be found for ath10k.
The device tree requires addition strings to define the variant name
wifi@a000000 {
status = "okay";
qcom,ath10k-calibration-variant = "RT-AC58U";
};
wifi@a800000 {
status = "okay";
qcom,ath10k-calibration-variant = "RT-AC58U";
};
This would create the boarddata identifiers for the board-2.bin search
* bus=ahb,bmi-chip-id=0,bmi-board-id=16,variant=RT-AC58U
* bus=ahb,bmi-chip-id=0,bmi-board-id=17,variant=RT-AC58U
The discussions to the old submissions can be found in:
RFC:
====
* https://patchwork.kernel.org/patch/9613615/
v1:
===
* https://patchwork.kernel.org/patch/9615183/
* https://patchwork.kernel.org/patch/9615185/
Changes since v1:
=================
* check the return value of strscpy and print debug message when buffer
was not big enough (I would have preferred ath10k_warn but
ath10k_core_check_bdfext disagreed)
Changes since RFC:
==================
* Split patch in DT doc and ath10k part (thanks Christian Lamparter)
* Remove the words "bmi-chip-id" and "bmi-board-id" and replace them with
more generic "device specific ids"
Kind regards,
Sven
Sven Eckelmann (2):
dt: bindings: add new dt entry for ath10k calibration variant
ath10k: search DT for qcom,ath10k-calibration-variant
.../bindings/net/wireless/qcom,ath10k.txt | 3 ++
drivers/net/wireless/ath/ath10k/core.c | 40 ++++++++++++++++++----
2 files changed, 36 insertions(+), 7 deletions(-)
--
2.11.0
