[PATCH ath-next] wifi: ath12k: update IPQ5332 BDF address offset

[Aaradhana Sahu]

In the ath12k driver, the BDF_MEM_REGION_TYPE address is derived by
adding a fixed bdf_addr_offset to the WCSS Q6 region base address.

The current offset (0xC00000) works only when the Q6 region contains
the IPQ5332 ucode alone. On some IPQ5332 platform variants, additional
devices share the same WCSS Q6 processor and place their firmware
ucode in the same Q6 region. This results in multiple ucode sections
within the region, and the existing offset can cause the BDF memory
region to overlap with firmware read-only sections, which can lead to
firmware crash and driver boot failure.

Increase the bdf_addr_offset to 0x1A00000, determined by analyzing
firmware memory maps across all known IPQ5332 platform variants. This
value represents the upper bound of the largest combined firmware and
ensures all IPQ5332 variants can allocate the BDF region safely without
overlapping firmware regions.

Tested-on: IPQ5332 hw1.0 AHB WLAN.WBE.1.6-01275-QCAHKSWPL_SILICONZ-1

Signed-off-by: Aaradhana Sahu <aaradhana.sahu at oss.qualcomm.com>
---
 drivers/net/wireless/ath/ath12k/wifi7/hw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath12k/wifi7/hw.c b/drivers/net/wireless/ath/ath12k/wifi7/hw.c
index e5bf9d218104..03f87374881f 100644
--- a/drivers/net/wireless/ath/ath12k/wifi7/hw.c
+++ b/drivers/net/wireless/ath/ath12k/wifi7/hw.c
@@ -689,7 +689,7 @@ static const struct ath12k_hw_params ath12k_wifi7_hw_params[] = {
 
 		.ce_ie_addr = &ath12k_wifi7_ce_ie_addr_ipq5332,
 		.ce_remap = &ath12k_wifi7_ce_remap_ipq5332,
-		.bdf_addr_offset = 0xC00000,
+		.bdf_addr_offset = 0x1A00000,
 
 		.dp_primary_link_only = true,
 		.client = {

base-commit: e36b3c776adc9891d8574241be77640ded819ee7
-- 
2.34.1