From: "Marek Behún" <kabel@kernel.org>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: pali@kernel.org, linux-pci@vger.kernel.org,
"Marek Behún" <kabel@kernel.org>
Subject: [PATCH v4 10/11] PCI: aardvark: Disable link training when unbinding driver
Date: Tue, 30 Nov 2021 18:29:12 +0100 [thread overview]
Message-ID: <20211130172913.9727-11-kabel@kernel.org> (raw)
In-Reply-To: <20211130172913.9727-1-kabel@kernel.org>
From: Pali Rohár <pali@kernel.org>
Disable link training circuit in driver unbind sequence. We want to
leave link training in the same state as it was before the driver was
probed.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
---
drivers/pci/controller/pci-aardvark.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index 271ebecee965..e5c88f1c177b 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -1741,6 +1741,11 @@ static int advk_pcie_remove(struct platform_device *pdev)
if (pcie->reset_gpio)
gpiod_set_value_cansleep(pcie->reset_gpio, 1);
+ /* Disable link training */
+ val = advk_readl(pcie, PCIE_CORE_CTRL0_REG);
+ val &= ~LINK_TRAINING_EN;
+ advk_writel(pcie, val, PCIE_CORE_CTRL0_REG);
+
/* Disable outbound address windows mapping */
for (i = 0; i < OB_WIN_COUNT; i++)
advk_pcie_disable_ob_win(pcie, i);
--
2.32.0
next prev parent reply other threads:[~2021-11-30 17:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-30 17:29 [PATCH v4 00/11] PCI: aardvark controller fixes BATCH 3 Marek Behún
2021-11-30 17:29 ` [PATCH v4 01/11] PCI: pci-bridge-emul: Add description for class_revision field Marek Behún
2021-12-03 16:36 ` Bjorn Helgaas
2021-12-03 18:52 ` Marek Behún
2021-11-30 17:29 ` [PATCH v4 02/11] PCI: pci-bridge-emul: Add definitions for missing capabilities registers Marek Behún
2021-12-03 16:45 ` Bjorn Helgaas
2021-11-30 17:29 ` [PATCH v4 03/11] PCI: aardvark: Add support for DEVCAP2, DEVCTL2, LNKCAP2 and LNKCTL2 registers on emulated bridge Marek Behún
2021-11-30 17:29 ` [PATCH v4 04/11] PCI: aardvark: Clear all MSIs at setup Marek Behún
2021-11-30 17:29 ` [PATCH v4 05/11] PCI: aardvark: Comment actions in driver remove method Marek Behún
2021-11-30 17:29 ` [PATCH v4 06/11] PCI: aardvark: Disable bus mastering when unbinding driver Marek Behún
2021-11-30 17:29 ` [PATCH v4 07/11] PCI: aardvark: Mask all interrupts " Marek Behún
2021-11-30 17:29 ` [PATCH v4 08/11] PCI: aardvark: Fix memory leak in driver unbind Marek Behún
2021-11-30 17:29 ` [PATCH v4 09/11] PCI: aardvark: Assert PERST# when unbinding driver Marek Behún
2021-11-30 17:29 ` Marek Behún [this message]
2021-11-30 17:29 ` [PATCH v4 11/11] PCI: aardvark: Disable common PHY " Marek Behún
2021-12-02 10:01 ` [PATCH v4 00/11] PCI: aardvark controller fixes BATCH 3 Lorenzo Pieralisi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211130172913.9727-11-kabel@kernel.org \
--to=kabel@kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=lorenzo.pieralisi@arm.com \
--cc=pali@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.