mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 08:51:13 +00:00
56 lines
2.3 KiB
Diff
56 lines
2.3 KiB
Diff
|
From patchwork Thu Sep 28 12:58:36 2017
|
||
|
|
Content-Type: text/plain; charset="utf-8"
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Transfer-Encoding: 7bit
|
||
|
|
Subject: [v2,5/7] PCI: aardvark: disable LOS state by default
|
||
|
|
X-Patchwork-Submitter: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
||
|
|
X-Patchwork-Id: 819590
|
||
|
|
Message-Id: <20170928125838.11887-6-thomas.petazzoni@free-electrons.com>
|
||
|
|
To: Bjorn Helgaas <bhelgaas@google.com>, linux-pci@vger.kernel.org
|
||
|
|
Cc: Jason Cooper <jason@lakedaemon.net>, Andrew Lunn <andrew@lunn.ch>,
|
||
|
|
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>, Gregory Clement
|
||
|
|
<gregory.clement@free-electrons.com>,
|
||
|
|
Nadav Haklai <nadavh@marvell.com>, Hanna Hawa <hannah@marvell.com>,
|
||
|
|
Yehuda Yitschak <yehuday@marvell.com>,
|
||
|
|
linux-arm-kernel@lists.infradead.org, Antoine Tenart
|
||
|
|
<antoine.tenart@free-electrons.com>, =?utf-8?q?Miqu=C3=A8l_Raynal?=
|
||
|
|
<miquel.raynal@free-electrons.com>, Victor Gu <xigu@marvell.com>,
|
||
|
|
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
||
|
|
Date: Thu, 28 Sep 2017 14:58:36 +0200
|
||
|
|
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
||
|
|
List-Id: <linux-pci.vger.kernel.org>
|
||
|
|
|
||
|
|
From: Victor Gu <xigu@marvell.com>
|
||
|
|
|
||
|
|
Some PCIe devices do not support LOS, and will cause timeouts if the
|
||
|
|
root complex forces the LOS state. This patch disables the LOS state
|
||
|
|
by default.
|
||
|
|
|
||
|
|
This is part of fixing bug
|
||
|
|
https://bugzilla.kernel.org/show_bug.cgi?id=196339, this commit was
|
||
|
|
reported as the user to be important to get a Intel 7260 mini-PCIe
|
||
|
|
WiFi card working.
|
||
|
|
|
||
|
|
Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller driver")
|
||
|
|
Signed-off-by: Victor Gu <xigu@marvell.com>
|
||
|
|
Reviewed-by: Evan Wang <xswang@marvell.com>
|
||
|
|
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
|
||
|
|
[Thomas: tweak commit log.]
|
||
|
|
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
||
|
|
---
|
||
|
|
drivers/pci/controller/pci-aardvark.c | 3 +--
|
||
|
|
1 file changed, 1 insertion(+), 2 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/pci/controller/pci-aardvark.c
|
||
|
|
+++ b/drivers/pci/controller/pci-aardvark.c
|
||
|
|
@@ -324,8 +324,7 @@ static void advk_pcie_setup_hw(struct ad
|
||
|
|
|
||
|
|
advk_pcie_wait_for_link(pcie);
|
||
|
|
|
||
|
|
- reg = PCIE_CORE_LINK_L0S_ENTRY |
|
||
|
|
- (1 << PCIE_CORE_LINK_WIDTH_SHIFT);
|
||
|
|
+ reg = (1 << PCIE_CORE_LINK_WIDTH_SHIFT);
|
||
|
|
advk_writel(pcie, reg, PCIE_CORE_LINK_CTRL_STAT_REG);
|
||
|
|
|
||
|
|
reg = advk_readl(pcie, PCIE_CORE_CMD_STATUS_REG);
|