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ath11k: set WMI pipe credit to 1 for QCA6390

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For QCA6390, set wmi credit to 1 to avoid back-to-back write to
shadow register when shadow register is enabled.

Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1

Signed-off-by: Carl Huang <cjhuang@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1601544890-13450-4-git-send-email-kvalo@codeaurora.org
This commit is contained in:
Carl Huang 2020-10-01 12:34:45 +03:00 committed by Kalle Valo
parent e838c14a9e
commit 9df6d8399d
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/ath/ath11k/htc.c
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@ -515,6 +515,12 @@ int ath11k_htc_wait_target(struct ath11k_htc *htc)
return -ECOMM;
}
/* For QCA6390, wmi endpoint uses 1 credit to avoid
* back-to-back write.
*/
if (ab->hw_params.supports_shadow_regs)
htc->total_transmit_credits = 1;
ath11k_htc_setup_target_buffer_assignments(htc);
return 0;