From: Alagu Sankar <alagusankar@xxxxxxxxxxxxxxx>
The QCA9377-3 WB396 sdio reference card does not get initialized
due to the conflict in uart gpio pins. This fix is not required
for other QCA9377 sdio cards.
Signed-off-by: Alagu Sankar <alagusankar@xxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/core.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index b4f66cd..86247c8 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -1708,8 +1708,15 @@ static int ath10k_init_uart(struct ath10k *ar)
return ret;
}
- if (!uart_print)
+ if (!uart_print) {
+ /* Hack: override dbg TX pin to avoid side effects of default
+ * GPIO_6 in QCA9377 WB396 reference card
+ */
+ if (ar->hif.bus == ATH10K_BUS_SDIO)
+ ath10k_bmi_write32(ar, hi_dbg_uart_txpin,
+ ar->hw_params.uart_pin);
return 0;
+ }
ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, ar->hw_params.uart_pin);
if (ret) {
--
1.9.1
