* [PATCH] ath6kl: Lower SDIO pad drive strength for hw2.1.1 board
@ 2012-02-22 6:33 rmani
2012-02-28 8:44 ` Kalle Valo
0 siblings, 1 reply; 2+ messages in thread
From: rmani @ 2012-02-22 6:33 UTC (permalink / raw)
To: kvalo; +Cc: linux-wireless, ath6kl-devel, Raja Mani
From: Raja Mani <rmani@qca.qualcomm.com>
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>
---
drivers/net/wireless/ath/ath6kl/init.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index 72f1b4f..6033946 100644
--- 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;
--
1.7.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ath6kl: Lower SDIO pad drive strength for hw2.1.1 board
2012-02-22 6:33 [PATCH] ath6kl: Lower SDIO pad drive strength for hw2.1.1 board rmani
@ 2012-02-28 8:44 ` Kalle Valo
0 siblings, 0 replies; 2+ messages in thread
From: Kalle Valo @ 2012-02-28 8:44 UTC (permalink / raw)
To: rmani; +Cc: linux-wireless, ath6kl-devel
On 02/22/2012 08:33 AM, rmani@qca.qualcomm.com wrote:
> From: Raja Mani <rmani@qca.qualcomm.com>
>
> 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>
Thanks, applied.
Kalle
^ permalink raw reply [flat|nested] 2+ messages in thread
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