From: <bpeled@marvell.com>
To: <thomas.petazzoni@bootlin.com>, <lorenzo.pieralisi@arm.com>,
<bhelgaas@google.com>
Cc: <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-pci@vger.kernel.org>,
<sebastian.hesselbarth@gmail.com>, <gregory.clement@bootlin.com>,
<andrew@lunn.ch>, <robh+dt@kernel.org>, <mw@semihalf.com>,
<jaz@semihalf.com>, <kostap@marvell.com>, <nadavh@marvell.com>,
<stefanc@marvell.com>, <oferh@marvell.com>, <bpeled@marvell.com>
Subject: [”PATCH” 5/5] PCI: armada8k: add device reset to link-down handle
Date: Mon, 12 Apr 2021 18:30:56 +0300 [thread overview]
Message-ID: <1618241456-27200-6-git-send-email-bpeled@marvell.com> (raw)
In-Reply-To: <1618241456-27200-1-git-send-email-bpeled@marvell.com>
From: Ben Peled <bpeled@marvell.com>
Added pcie reset via gpio support as described in the
designware-pcie.txt DT binding document.
In cases link down cause still exist in device.
The device need to be reset to reestablish the link.
If reset-gpio pin provided in the device tree, then the linkdown
handle resets the device before reestablishing link.
Signed-off-by: Ben Peled <bpeled@marvell.com>
---
drivers/pci/controller/dwc/pcie-armada8k.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/controller/dwc/pcie-armada8k.c b/drivers/pci/controller/dwc/pcie-armada8k.c
index 4eb8607..83ac91e 100644
--- a/drivers/pci/controller/dwc/pcie-armada8k.c
+++ b/drivers/pci/controller/dwc/pcie-armada8k.c
@@ -24,6 +24,7 @@
#include <linux/of_irq.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
+#include <linux/of_gpio.h>
#include "pcie-designware.h"
@@ -38,6 +39,7 @@ struct armada8k_pcie {
struct regmap *sysctrl_base;
u32 mac_rest_bitmask;
struct work_struct recover_link_work;
+ enum of_gpio_flags flags;
};
#define PCIE_VENDOR_REGS_OFFSET 0x8000
--
2.7.4
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next prev parent reply other threads:[~2021-04-12 15:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-12 15:30 [”PATCH” 0/5] Asynchronous linkdown recovery bpeled
2021-04-12 15:30 ` [”PATCH” 1/5] PCI: armada8k: Disable LTSSM on link down interrupts bpeled
2021-04-12 15:30 ` [”PATCH” 2/5] PCI: armada8k: Add link-down handle bpeled
2021-04-14 12:42 ` Jonathan Cameron
2021-04-27 7:07 ` [EXT] " Ben Peled
2021-04-12 15:30 ` [”PATCH” 3/5] dt-bindings: pci: add system controller and MAC reset bit to Armada 7K/8K controller bindings bpeled
2021-04-13 15:10 ` Rob Herring
2021-04-26 15:58 ` [EXT] " Ben Peled
2021-04-12 15:30 ` [”PATCH” 4/5] arm64: dts: marvell: add pcie mac reset to pcie bpeled
2021-04-12 15:30 ` bpeled [this message]
2021-04-13 10:14 ` [”PATCH” 0/5] Asynchronous linkdown recovery Ben Peled
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