ath6kl: Lower SDIO pad drive strength for hw2.1.1 board

Without this change, SDIO shuts down due to CRC error during
data communication to the firmware in some of the platform.
for example, scan request issued to the firmware doesn't
return scan completed events and cause the socket interface
to always return -16 (device busy).

SDIO pad drive strength should be reduced for hw2.1.1 board
to avoid such errors.

Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index 6fed6280174f20203c0f1bddc4c1237bf740b7f0..f3b5502362d82cfe3cdd2d223c98c85737a88090 100644 (file)
--- a/drivers/net/wireless/ath/ath6kl/init.c
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -1406,7 +1406,8 @@ static int ath6kl_init_upload(struct ath6kl *ar)
                return status;
 
        /* WAR to avoid SDIO CRC err */
-       if (ar->version.target_ver == AR6003_HW_2_0_VERSION) {
+       if (ar->version.target_ver == AR6003_HW_2_0_VERSION ||
+           ar->version.target_ver == AR6003_HW_2_1_1_VERSION) {
                ath6kl_err("temporary war to avoid sdio crc error\n");
 
                param = 0x20;