From: Kishon Vijay Abraham I <kishon@ti.com>
To: <devicetree@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-omap@vger.kernel.org>, <linux-pci@vger.kernel.org>
Cc: <rogerq@ti.com>, <balajitk@ti.com>,
Kishon Vijay Abraham I <kishon@ti.com>,
Dan Murphy <dmurphy@ti.com>
Subject: [TEMP PATCH 16/17] pci: host: pcie-dra7xx: use reset framework APIs to reset PCIe
Date: Tue, 6 May 2014 19:04:02 +0530 [thread overview]
Message-ID: <1399383244-14556-17-git-send-email-kishon@ti.com> (raw)
In-Reply-To: <1399383244-14556-1-git-send-email-kishon@ti.com>
Get reset nodes from dt and use reset framework APIs to reset PCIe.
This is needed since reset is handled by the SoC.
Cc: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
Documentation/devicetree/bindings/pci/ti-pci.txt | 2 ++
drivers/pci/host/pci-dra7xx.c | 10 ++++++++++
2 files changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/pci/ti-pci.txt b/Documentation/devicetree/bindings/pci/ti-pci.txt
index 6cb6f09..cfb95c0 100644
--- a/Documentation/devicetree/bindings/pci/ti-pci.txt
+++ b/Documentation/devicetree/bindings/pci/ti-pci.txt
@@ -9,6 +9,8 @@ This node should have the properties described in "designware-pcie.txt".
- phys : the phandle for the PHY device (used by generic PHY framework)
- phy-names : the names of the PHY corresponding to the PHYs present in the
*phy* phandle.
+ - resets: phandle used if reset is handled be soc
+ - reset-names: name given to the phandle
Example:
pcie@51000000 {
diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci-dra7xx.c
index a37c25c..17d64ee 100644
--- a/drivers/pci/host/pci-dra7xx.c
+++ b/drivers/pci/host/pci-dra7xx.c
@@ -20,6 +20,7 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/resource.h>
+#include <linux/reset.h>
#include <linux/types.h>
#include "pcie-designware.h"
@@ -281,6 +282,7 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
struct resource *res;
struct dra7xx_pcie *dra7xx;
struct device *dev = &pdev->dev;
+ struct reset_control *rstc;
dra7xx = devm_kzalloc(&pdev->dev, sizeof(*dra7xx), GFP_KERNEL);
if (!dra7xx)
@@ -304,6 +306,14 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
if (!base)
return -ENOMEM;
+ rstc = devm_reset_control_get(dev, "reset");
+ if (IS_ERR(rstc))
+ return PTR_ERR(rstc);
+
+ ret = reset_control_deassert(rstc);
+ if (ret)
+ return ret;
+
phy = devm_phy_get(dev, "pcie-phy");
if (IS_ERR(phy))
return PTR_ERR(phy);
--
1.7.9.5
next prev parent reply other threads:[~2014-05-06 13:35 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-06 13:33 [PATCH 00/17] PCIe support for DRA7xx Kishon Vijay Abraham I
2014-05-06 13:33 ` [PATCH 01/17] phy: phy-omap-pipe3: Add support for PCIe PHY Kishon Vijay Abraham I
2014-05-14 12:57 ` Roger Quadros
2014-05-06 13:33 ` [PATCH 03/17] phy: ti-pipe3: add external clock " Kishon Vijay Abraham I
2014-05-14 13:16 ` Roger Quadros
2014-05-14 15:19 ` Kishon Vijay Abraham I
2014-05-14 15:34 ` Nishanth Menon
2014-05-15 9:15 ` Kishon Vijay Abraham I
2014-05-15 9:25 ` Roger Quadros
2014-05-15 11:46 ` Nishanth Menon
2014-05-15 11:59 ` Kishon Vijay Abraham I
2014-05-15 12:12 ` Nishanth Menon
2014-05-15 12:18 ` Kishon Vijay Abraham I
2014-05-15 12:33 ` Nishanth Menon
2014-05-15 12:42 ` Kishon Vijay Abraham I
2014-05-27 6:11 ` Kishon Vijay Abraham I
2014-05-28 1:54 ` Mike Turquette
2014-05-28 15:52 ` Nishanth Menon
2014-05-06 13:33 ` [PATCH 05/17] pci: host: pcie-dra7xx: add support for pcie-dra7xx controller Kishon Vijay Abraham I
2014-05-06 13:44 ` Marek Vasut
2014-05-07 8:21 ` Kishon Vijay Abraham I
2014-05-09 9:43 ` Pavel Machek
2014-05-06 13:54 ` Arnd Bergmann
2014-05-07 8:44 ` Kishon Vijay Abraham I
2014-05-07 9:30 ` Arnd Bergmann
2014-05-09 11:29 ` Kishon Vijay Abraham I
2014-05-06 16:35 ` Jason Gunthorpe
2014-05-07 9:22 ` Kishon Vijay Abraham I
2014-05-07 9:25 ` Arnd Bergmann
2014-05-08 8:56 ` Jingoo Han
2014-05-08 9:16 ` Arnd Bergmann
2014-05-06 13:33 ` [PATCH 06/17] pci: host: pcie-designware: Use *base-mask* for configuring the iATU Kishon Vijay Abraham I
2014-05-06 13:59 ` Arnd Bergmann
2014-05-08 9:05 ` Jingoo Han
2014-05-08 9:18 ` Arnd Bergmann
2014-05-09 11:50 ` Kishon Vijay Abraham I
2014-05-12 1:44 ` Jingoo Han
2014-05-13 12:31 ` Kishon Vijay Abraham I
2014-05-13 12:47 ` Arnd Bergmann
2014-05-13 13:26 ` Kishon Vijay Abraham I
2014-05-13 13:27 ` Arnd Bergmann
2014-05-13 13:34 ` Arnd Bergmann
2014-05-14 5:44 ` Kishon Vijay Abraham I
2014-05-14 12:45 ` Arnd Bergmann
2014-05-14 15:04 ` Kishon Vijay Abraham I
2014-05-16 9:00 ` Kishon Vijay Abraham I
2014-05-19 12:45 ` Arnd Bergmann
2014-05-06 13:33 ` [PATCH 07/17] ARM: dts: DRA7: Add divider table to optfclk_pciephy_div clock Kishon Vijay Abraham I
2014-05-06 13:33 ` [PATCH 08/17] ARM: dts: DRA7: Change the parent of apll_pcie_in_clk_mux to dpll_pcie_ref_m2ldo_ck Kishon Vijay Abraham I
2014-05-06 13:33 ` [PATCH 09/17] arm: dra7xx: Add hwmod data for pcie1 phy and pcie2 phy Kishon Vijay Abraham I
2014-05-06 13:33 ` [PATCH 10/17] arm: dra7xx: Add hwmod data for pcie1 and pcie2 subsystems Kishon Vijay Abraham I
2014-05-06 13:33 ` [PATCH 11/17] ARM: dts: dra7xx-clocks: Add missing 32khz clocks used for PHY Kishon Vijay Abraham I
2014-05-14 13:23 ` Roger Quadros
2014-05-14 15:19 ` Kishon Vijay Abraham I
2014-05-06 13:33 ` [PATCH 12/17] ARM: dts: dra7: Add dt data for PCIe PHY control module Kishon Vijay Abraham I
2014-05-06 13:33 ` [PATCH 13/17] ARM: dts: dra7: Add dt data for PCIe PHY Kishon Vijay Abraham I
2014-05-06 13:34 ` [PATCH 14/17] ARM: dts: dra7: Add dt data for PCIe controller Kishon Vijay Abraham I
2014-05-06 13:34 ` [PATCH 15/17] ARM: OMAP: Enable PCI for DRA7 Kishon Vijay Abraham I
2014-05-06 13:34 ` Kishon Vijay Abraham I [this message]
2014-05-06 13:41 ` [TEMP PATCH 16/17] pci: host: pcie-dra7xx: use reset framework APIs to reset PCIe Dan Murphy
2014-05-06 13:34 ` [TEMP PATCH 17/17] ARM: dts: dra7: Add *resets* property for PCIe dt node Kishon Vijay Abraham I
2014-05-06 13:40 ` Dan Murphy
[not found] ` <1399383244-14556-3-git-send-email-kishon@ti.com>
2014-05-14 13:02 ` [PATCH 02/17] phy: omap-control: add external clock support for PCIe PHY Roger Quadros
[not found] ` <1399383244-14556-5-git-send-email-kishon@ti.com>
2014-05-14 13:20 ` [PATCH 04/17] phy: pipe3: insert delay to enumerate in GEN2 mode Roger Quadros
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