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ipq806x: chromium: Pull OnHub caldata directly from VPD

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The OnHub bootloader tries to patch the calibration directly into the
device tree, but it uses constant paths that look like this:

  static const char *dt_path = "soc/pci@%8.8x/pcie@0/ath10k@0,0";

  https://chromium.googlesource.com/chromiumos/platform/depthcharge/+/refs/heads/firmware-storm-6315.B/src/board/storm/wifi_calibration.c#69

These paths have changed in recent kernels, so we need to adapte.

The CONFIG_GOOGLE_VPD kernel module (provided by kmod-google-firmware)
is present on OnHub, and provides alternative means to locate this
information, in /sys/firmware/vpd/ro/wifi_base64_calibration{0,1,2}. Use
that instead.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/20477
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
Brian Norris 2025-10-20 22:44:25 -07:00 committed by Robert Marko
parent c3c75d0e68
commit 24d2ac6d3a
1 changed files with 5 additions and 5 deletions
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10
target/linux/ipq806x/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
View File

@ -6,9 +6,9 @@
board=$(board_name)
dt_base64_extract() {
base64_extract() {
local target_dir="/sys$DEVPATH"
local source="$target_dir/../../of_node/qcom,ath10k-calibration-data-base64"
local source="$1"
[ -e "$source" ] || caldata_die "cannot find base64 calibration data: $source"
[ -d "$target_dir" ] || \
@ -30,7 +30,7 @@ case "$FIRMWARE" in
case "$board" in
asus,onhub |\
tplink,onhub)
dt_base64_extract
base64_extract /sys/firmware/vpd/ro/wifi_base64_calibration0
;;
meraki,mr52)
CI_UBIPART=art
@ -61,7 +61,7 @@ case "$FIRMWARE" in
case "$board" in
asus,onhub |\
tplink,onhub)
dt_base64_extract
base64_extract /sys/firmware/vpd/ro/wifi_base64_calibration1
;;
esac
;;
@ -92,7 +92,7 @@ case "$FIRMWARE" in
case "$board" in
asus,onhub |\
tplink,onhub)
dt_base64_extract
base64_extract /sys/firmware/vpd/ro/wifi_base64_calibration2
;;
meraki,mr42)
CI_UBIPART=art