diff options
Diffstat (limited to 'arch/arm/mach-imx/mach-imx6q.c')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 67 |
1 files changed, 66 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index d0cfb225ec9a..76e5db4fce35 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; @@ -103,6 +133,39 @@ static int ar8031_phy_fixup(struct phy_device *dev) #define PHY_ID_AR8031 0x004dd074 +static int ar8035_phy_fixup(struct phy_device *dev) +{ + u16 val; + + /* Ar803x phy SmartEEE feature cause link status generates glitch, + * which cause ethernet link down/up issue, so disable SmartEEE + */ + phy_write(dev, 0xd, 0x3); + phy_write(dev, 0xe, 0x805d); + phy_write(dev, 0xd, 0x4003); + + val = phy_read(dev, 0xe); + phy_write(dev, 0xe, val & ~(1 << 8)); + + /* + * Enable 125MHz clock from CLK_25M on the AR8031. This + * is fed in to the IMX6 on the ENET_REF_CLK (V22) pad. + * Also, introduce a tx clock delay. + * + * This is the same as is the AR8031 fixup. + */ + ar8031_phy_fixup(dev); + + /*check phy power*/ + val = phy_read(dev, 0x0); + if (val & BMCR_PDOWN) + phy_write(dev, 0x0, val & ~BMCR_PDOWN); + + return 0; +} + +#define PHY_ID_AR8035 0x004dd072 + static void __init imx6q_enet_phy_init(void) { if (IS_BUILTIN(CONFIG_PHYLIB)) { @@ -112,6 +175,8 @@ static void __init imx6q_enet_phy_init(void) ksz9031rn_phy_fixup); phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff, ar8031_phy_fixup); + phy_register_fixup_for_uid(PHY_ID_AR8035, 0xffffffef, + ar8035_phy_fixup); } } @@ -243,7 +308,7 @@ static void __init imx6q_init_irq(void) irqchip_init(); } -static const char *imx6q_dt_compat[] __initdata = { +static const char *imx6q_dt_compat[] __initconst = { "fsl,imx6dl", "fsl,imx6q", NULL, |