diff options
| -rw-r--r-- | arch/powerpc/platforms/83xx/mpc837x_mds.c | 51 | ||||
| -rw-r--r-- | arch/powerpc/platforms/83xx/mpc83xx.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/83xx/usb.c | 40 |
3 files changed, 94 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c index cfd05487f26e..8a9c26973605 100644 --- a/arch/powerpc/platforms/83xx/mpc837x_mds.c +++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c @@ -22,6 +22,56 @@ #include "mpc83xx.h" +#define BCSR12_USB_SER_MASK 0x8a +#define BCSR12_USB_SER_PIN 0x80 +#define BCSR12_USB_SER_DEVICE 0x02 +extern int mpc837x_usb_cfg(void); + +static int mpc837xmds_usb_cfg(void) +{ + struct device_node *np; + const void *phy_type, *mode; + void __iomem *bcsr_regs = NULL; + u8 bcsr12; + int ret; + + ret = mpc837x_usb_cfg(); + if (ret) + return ret; + /* Map BCSR area */ + np = of_find_node_by_name(NULL, "bcsr"); + if (np) { + struct resource res; + + of_address_to_resource(np, 0, &res); + bcsr_regs = ioremap(res.start, res.end - res.start + 1); + of_node_put(np); + } + if (!bcsr_regs) + return -1; + + np = of_find_node_by_name(NULL, "usb"); + if (!np) + return -ENODEV; + phy_type = of_get_property(np, "phy_type", NULL); + if (phy_type && !strcmp(phy_type, "ulpi")) { + clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN); + } else if (phy_type && !strcmp(phy_type, "serial")) { + mode = of_get_property(np, "dr_mode", NULL); + bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK; + bcsr12 |= BCSR12_USB_SER_PIN; + if (mode && !strcmp(mode, "peripheral")) + bcsr12 |= BCSR12_USB_SER_DEVICE; + out_8(bcsr_regs + 12, bcsr12); + } else { + printk(KERN_ERR "USB DR: unsupported PHY\n"); + } + + of_node_put(np); + iounmap(bcsr_regs); + return 0; +} + /* ************************************************************************ * * Setup the architecture @@ -40,6 +90,7 @@ static void __init mpc837x_mds_setup_arch(void) for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") mpc83xx_add_bridge(np); #endif + mpc837xmds_usb_cfg(); } static struct of_device_id mpc837x_ids[] = { diff --git a/arch/powerpc/platforms/83xx/mpc83xx.h b/arch/powerpc/platforms/83xx/mpc83xx.h index b778cb4f3fb5..88bb748aff0d 100644 --- a/arch/powerpc/platforms/83xx/mpc83xx.h +++ b/arch/powerpc/platforms/83xx/mpc83xx.h @@ -14,6 +14,7 @@ #define MPC83XX_SCCR_USB_DRCM_11 0x00300000 #define MPC83XX_SCCR_USB_DRCM_01 0x00100000 #define MPC83XX_SCCR_USB_DRCM_10 0x00200000 +#define MPC837X_SCCR_USB_DRCM_11 0x00c00000 /* system i/o configuration register low */ #define MPC83XX_SICRL_OFFS 0x114 @@ -22,6 +23,8 @@ #define MPC834X_SICRL_USB1 0x20000000 #define MPC831X_SICRL_USB_MASK 0x00000c00 #define MPC831X_SICRL_USB_ULPI 0x00000800 +#define MPC837X_SICRL_USB_MASK 0xf0000000 +#define MPC837X_SICRL_USB_ULPI 0x50000000 /* system i/o configuration register high */ #define MPC83XX_SICRH_OFFS 0x118 diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c index b45160f8d084..b1de453a8851 100644 --- a/arch/powerpc/platforms/83xx/usb.c +++ b/arch/powerpc/platforms/83xx/usb.c @@ -179,3 +179,43 @@ int mpc831x_usb_cfg(void) return ret; } #endif /* CONFIG_PPC_MPC831x */ + +#ifdef CONFIG_PPC_MPC837x +int mpc837x_usb_cfg(void) +{ + void __iomem *immap; + struct device_node *np = NULL; + const void *prop; + int ret = 0; + + np = of_find_compatible_node(NULL, "usb", "fsl-usb2-dr"); + if (!np) + return -ENODEV; + prop = of_get_property(np, "phy_type", NULL); + + if (!prop || (strcmp(prop, "ulpi") && strcmp(prop, "serial"))) { + printk(KERN_WARNING "837x USB PHY type not supported\n"); + of_node_put(np); + return -EINVAL; + } + + /* Map IMMR space for pin and clock settings */ + immap = ioremap(get_immrbase(), 0x1000); + if (!immap) { + of_node_put(np); + return -ENOMEM; + } + + /* Configure clock */ + clrsetbits_be32(immap + MPC83XX_SCCR_OFFS, MPC837X_SCCR_USB_DRCM_11, + MPC837X_SCCR_USB_DRCM_11); + + /* Configure pin mux for ULPI/serial */ + clrsetbits_be32(immap + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USB_MASK, + MPC837X_SICRL_USB_ULPI); + + iounmap(immap); + of_node_put(np); + return ret; +} +#endif /* CONFIG_PPC_MPC837x */ |