You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
2.0 KiB
69 lines
2.0 KiB
11 years ago
|
From 4bb1d09fe48f51efac2f51b9280796e2d00a6c4a Mon Sep 17 00:00:00 2001
|
||
|
|
From: Tim Harvey <tharvey@gateworks.com>
|
||
|
|
Date: Tue, 22 Oct 2013 21:51:28 -0700
|
||
|
|
Subject: [PATCH] ARM: imx: add PCI fixup for PEX860X on Gateworks board
|
||
|
|
|
||
|
|
The PEX860X has GPIO's which are used for PCI Reset lines on the
|
||
|
|
Gateworks Ventana boards. The GPIO's need to be set as output
|
||
|
|
level high so as to allow the PCIe devices to come out of reset.
|
||
|
|
|
||
|
|
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
|
||
|
|
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
|
||
|
|
---
|
||
|
|
arch/arm/mach-imx/mach-imx6q.c | 30 ++++++++++++++++++++++++++++++
|
||
|
|
1 file changed, 30 insertions(+)
|
||
|
|
|
||
|
|
--- a/arch/arm/mach-imx/mach-imx6q.c
|
||
|
|
+++ b/arch/arm/mach-imx/mach-imx6q.c
|
||
|
|
@@ -13,6 +13,7 @@
|
||
|
|
#include <linux/clk.h>
|
||
|
|
#include <linux/clkdev.h>
|
||
|
|
#include <linux/cpu.h>
|
||
|
|
+#include <linux/delay.h>
|
||
|
|
#include <linux/export.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
@@ -23,6 +24,7 @@
|
||
|
|
#include <linux/of_irq.h>
|
||
|
|
#include <linux/of_platform.h>
|
||
|
|
#include <linux/pm_opp.h>
|
||
|
|
+#include <linux/pci.h>
|
||
|
|
#include <linux/phy.h>
|
||
|
|
#include <linux/reboot.h>
|
||
|
|
#include <linux/regmap.h>
|
||
|
|
@@ -78,6 +80,34 @@ static int ksz9031rn_phy_fixup(struct ph
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
+/*
|
||
|
|
+ * fixup for PLX PEX8909 bridge to configure GPIO1-7 as output High
|
||
|
|
+ * as they are used for slots1-7 PERST#
|
||
|
|
+ */
|
||
|
|
+static void ventana_pciesw_early_fixup(struct pci_dev *dev)
|
||
|
|
+{
|
||
|
|
+ u32 dw;
|
||
|
|
+
|
||
|
|
+ if (!of_machine_is_compatible("gw,ventana"))
|
||
|
|
+ return;
|
||
|
|
+
|
||
|
|
+ if (dev->devfn != 0)
|
||
|
|
+ return;
|
||
|
|
+
|
||
|
|
+ pci_read_config_dword(dev, 0x62c, &dw);
|
||
|
|
+ dw |= 0xaaa8; // GPIO1-7 outputs
|
||
|
|
+ pci_write_config_dword(dev, 0x62c, dw);
|
||
|
|
+
|
||
|
|
+ pci_read_config_dword(dev, 0x644, &dw);
|
||
|
|
+ dw |= 0xfe; // GPIO1-7 output high
|
||
|
|
+ pci_write_config_dword(dev, 0x644, dw);
|
||
|
|
+
|
||
|
|
+ msleep(100);
|
||
|
|
+}
|
||
|
|
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8609, ventana_pciesw_early_fixup);
|
||
|
|
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8606, ventana_pciesw_early_fixup);
|
||
|
|
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8604, ventana_pciesw_early_fixup);
|
||
|
|
+
|
||
|
|
static int ar8031_phy_fixup(struct phy_device *dev)
|
||
|
|
{
|
||
|
|
u16 val;
|