diff options
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index d0cfb225ec9..7e5ec34894e 100644 --- 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 phy_device *dev) 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; |