openwrt/target/linux/ipq806x/patches-4.9/0071-9-pcie-qcom-change-duplicate-pci-reset-to-phy-reset.patch
Pavel Kubelun 36a96a4493 ipq806x: fix wireless regression
In current state there's huge regression on ipq806x target that causes the device to transmit broken/malformed frames that are not corrected/detected by error control mechanisms and other less severe issues.
https://bugs.lede-project.org/index.php?do=details&task_id=1197

This finally had been narrowed down to patch 0071-pcie-qcom-fixes.patch

Meanwhile QSDK contains a handful of commits that add support for ipq806x to upstream qcom pcie driver
https://source.codeaurora.org/quic/qsdk/oss/kernel/linux-msm/log/drivers/pci/host/pcie-qcom.c?h=eggplant
Unfortunately qca developers do not bother to push it upstream.

Using those commits instead of lede 0071 patch fixes mentioned issue and probably many others as it seems that corrupted data has been originating within pcie misconfiguration.

Fixes: FS#1197 and probably others
Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
2018-01-17 11:02:05 +01:00

26 lines
922 B
Diff

From 1a9c48123bd09f75562b6a2ee0f0a7b2d533cd45 Mon Sep 17 00:00:00 2001
From: Abhishek Sahu <absahu@codeaurora.org>
Date: Thu, 22 Dec 2016 11:50:49 +0530
Subject: pcie: qcom: change duplicate pci reset to phy reset
The deinit issues reset_control_assert for pci twice and
does not contain phy reset.
Change-Id: Iba849963c7e5f9a2a1063f0e2e89635df70b8a99
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
---
drivers/pci/host/pcie-qcom.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/host/pcie-qcom.c
+++ b/drivers/pci/host/pcie-qcom.c
@@ -353,7 +353,7 @@ static void qcom_pcie_deinit_v0(struct q
struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
clk_disable_unprepare(res->phy_clk);
- reset_control_assert(res->pci_reset);
+ reset_control_assert(res->phy_reset);
reset_control_assert(res->axi_reset);
reset_control_assert(res->ahb_reset);
reset_control_assert(res->por_reset);