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[POWERPC] 83xx: configure USB clock for MPC8315E 

SCCR USB bits are in a different location on the mpc8315.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kim Phillips 2008-01-30 12:46:19 -06:00 committed by Kumar Gala
parent 8353ec7b0d
commit b74a7e50cc
3 changed files with 16 additions and 5 deletions
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2
arch/powerpc/boot/dts/mpc8315erdb.dts
View File

@ -96,7 +96,7 @@ immr@e0000000 {
#address-cells = <1>;
#size-cells = <1>;
device_type = "soc";
compatible = "simple-bus";
compatible = "fsl,mpc8315-immr", "simple-bus";
ranges = <0 0xe0000000 0x00100000>;
reg = <0xe0000000 0x00000200>;
bus-frequency = <0>;

2
arch/powerpc/platforms/83xx/mpc83xx.h
View File

@ -14,6 +14,8 @@
#define MPC83XX_SCCR_USB_DRCM_11 0x00300000
#define MPC83XX_SCCR_USB_DRCM_01 0x00100000
#define MPC83XX_SCCR_USB_DRCM_10 0x00200000
#define MPC8315_SCCR_USB_MASK 0x00c00000
#define MPC8315_SCCR_USB_DRCM_11 0x00c00000
#define MPC837X_SCCR_USB_DRCM_11 0x00c00000
/* system i/o configuration register low */

17
arch/powerpc/platforms/83xx/usb.c
View File

@ -104,6 +104,7 @@ int mpc831x_usb_cfg(void)
u32 temp;
void __iomem *immap, *usb_regs;
struct device_node *np = NULL;
struct device_node *immr_node = NULL;
const void *prop;
struct resource res;
int ret = 0;
@ -124,10 +125,15 @@ int mpc831x_usb_cfg(void)
}
/* Configure clock */
temp = in_be32(immap + MPC83XX_SCCR_OFFS);
temp &= ~MPC83XX_SCCR_USB_MASK;
temp |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
out_be32(immap + MPC83XX_SCCR_OFFS, temp);
immr_node = of_get_parent(np);
if (immr_node && of_device_is_compatible(immr_node, "fsl,mpc8315-immr"))
clrsetbits_be32(immap + MPC83XX_SCCR_OFFS,
MPC8315_SCCR_USB_MASK,
MPC8315_SCCR_USB_DRCM_11);
else
clrsetbits_be32(immap + MPC83XX_SCCR_OFFS,
MPC83XX_SCCR_USB_MASK,
MPC83XX_SCCR_USB_DRCM_11);
/* Configure pin mux for ULPI. There is no pin mux for UTMI */
if (prop && !strcmp(prop, "ulpi")) {
@ -144,6 +150,9 @@ int mpc831x_usb_cfg(void)
iounmap(immap);
if (immr_node)
of_node_put(immr_node);
/* Map USB SOC space */
ret = of_address_to_resource(np, 0, &res);
if (ret) {