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| author |   Li Yang <leoli@freescale.com> | 2008-01-08 15:18:45 +0800 |
|---|---|---|
| committer |   Kumar Gala <galak@kernel.crashing.org> | 2008-01-23 19:33:03 -0600 |
| commit | e10241d8a1a68955e2f3e74befd9fa6ce61ba2bc (patch) | |
| tree | b213f00dbbb0e8a7cb744aae4764d59dc7a04cfc /arch/powerpc/platforms/83xx/mpc837x_mds.c | |
| parent | [POWERPC] 83xx: add device trees for MPC837x MDS board (diff) | |
| download | linux-dev-e10241d8a1a68955e2f3e74befd9fa6ce61ba2bc.tar.xz linux-dev-e10241d8a1a68955e2f3e74befd9fa6ce61ba2bc.zip | |
[POWERPC] 83xx: Add MPC837x USB platform support
Add chip specific and board specific initialization for MPC837x USB.
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/83xx/mpc837x_mds.c')
| -rw-r--r-- | arch/powerpc/platforms/83xx/mpc837x_mds.c | 51 |
1 files changed, 51 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[] = { |