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[POWERPC] 83xx: Add MPC837x USB platform support

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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>
This commit is contained in:
Li Yang
2008-01-08 15:18:45 +08:00
committed by Kumar Gala
parent 5761bc5dae
commit e10241d8a1
3 changed files with 94 additions and 0 deletions
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40
arch/powerpc/platforms/83xx/usb.c
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@ -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 */