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
WARNING: multiple messages have this Message-ID (diff)
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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-04-12 15:32 UTC|newest] Thread overview: 22+ 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 ` bpeled 2021-04-12 15:30 ` [”PATCH” 1/5] PCI: armada8k: Disable LTSSM on link down interrupts bpeled 2021-04-12 15:30 ` bpeled 2021-04-12 15:30 ` [”PATCH” 2/5] PCI: armada8k: Add link-down handle bpeled 2021-04-12 15:30 ` bpeled 2021-04-14 12:42 ` Jonathan Cameron 2021-04-14 12:42 ` Jonathan Cameron 2021-04-27 7:07 ` [EXT] " Ben Peled 2021-04-27 7:07 ` 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 2021-04-12 15:30 ` bpeled 2021-04-13 15:10 ` Rob Herring 2021-04-13 15:10 ` Rob Herring 2021-04-26 15:58 ` [EXT] " Ben Peled 2021-04-26 15:58 ` 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 2021-04-12 15:30 ` bpeled [this message] 2021-04-12 15:30 ` [”PATCH” 5/5] PCI: armada8k: add device reset to link-down handle bpeled 2021-04-13 10:14 ` [”PATCH” 0/5] Asynchronous linkdown recovery Ben Peled 2021-04-13 10:14 ` Ben Peled
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