From: Kalle Valo <kvalo@codeaurora.org>
To: ath11k@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Subject: [PATCH 3/8] ath11k: set WMI pipe credit to 1 for QCA6390
Date: Thu, 1 Oct 2020 12:34:45 +0300 [thread overview]
Message-ID: <1601544890-13450-4-git-send-email-kvalo@codeaurora.org> (raw)
In-Reply-To: <1601544890-13450-1-git-send-email-kvalo@codeaurora.org>
From: Carl Huang <cjhuang@codeaurora.org>
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>
---
drivers/net/wireless/ath/ath11k/htc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/wireless/ath/ath11k/htc.c b/drivers/net/wireless/ath/ath11k/htc.c
index 4de2350dfbf3..6b57dc273e0b 100644
--- a/drivers/net/wireless/ath/ath11k/htc.c
+++ b/drivers/net/wireless/ath/ath11k/htc.c
@@ -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;
--
2.7.4
next prev parent reply other threads:[~2020-10-01 9:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-01 9:34 [PATCH 0/8] ath11k: enable shadow register for QCA6390 Kalle Valo
2020-10-01 9:34 ` [PATCH 1/8] ath11k: read and write registers below unwindowed address Kalle Valo
2020-10-01 19:33 ` Kalle Valo
2020-10-01 9:34 ` [PATCH 2/8] ath11k: enable shadow register configuration and access Kalle Valo
2020-10-01 9:34 ` Kalle Valo [this message]
2020-10-01 9:34 ` [PATCH 4/8] ath11k: start a timer to update TCL HP Kalle Valo
2020-10-01 9:34 ` [PATCH 5/8] ath11k: start a timer to update REO cmd ring Kalle Valo
2020-10-01 9:34 ` [PATCH 6/8] ath11k: start a timer to update HP for CE pipe 4 Kalle Valo
2020-10-01 9:34 ` [PATCH 7/8] ath11k: enable idle power save mode Kalle Valo
2020-10-01 9:34 ` [PATCH 8/8] ath11k: remove unnecessary casts to u32 Kalle Valo
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