This adds USB platform support to MPC8349 PB. It works with the fsl_usb2_udc
driver.
Signed-off-by: Li Yang <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/83xx/Kconfig | 4 ++
arch/powerpc/platforms/83xx/mpc834x_sys.c | 72 +++++++++++++++++++++++++++++
arch/powerpc/platforms/83xx/mpc834x_sys.h | 24 ++++++++++
3 files changed, 113 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/platforms/83xx/Kconfig
b/arch/powerpc/platforms/83xx/Kconfig
index 7675e67..8404cdf 100644
--- a/arch/powerpc/platforms/83xx/Kconfig
+++ b/arch/powerpc/platforms/83xx/Kconfig
@@ -24,4 +31,14 @@ config MPC834x
select PPC_INDIRECT_PCI
default y if MPC834x_SYS
+config 834x_USB_SUPPORT
+ bool
+ default y if MPC834x_SYS && (USB || USB_GADGET)
+
endmenu
diff --git a/arch/powerpc/platforms/83xx/mpc834x_sys.c
b/arch/powerpc/platforms/83xx/mpc834x_sys.c
index 7e789d2..f10d4ae 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_sys.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_sys.c
@@ -36,6 +36,7 @@ #include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
+#include <linux/fsl_devices.h>
#include "mpc83xx.h"
@@ -71,6 +72,72 @@ mpc83xx_map_irq(struct pci_dev *dev, uns
}
#endif /* CONFIG_PCI */
+#ifdef CONFIG_834x_USB_SUPPORT
+void mpc834x_usb_board_cfg(void)
+{
+ unsigned char __iomem *bcsr;
+ volatile unsigned char *bcsr5_p;
+
+ /*
+ * if SYS board is plug into PIB board,
+ * force to use the PHY on SYS board
+ * */
+ bcsr = ioremap(BCSR_PHYS_ADDR, BCSR_SIZE);
+ bcsr5_p = bcsr + BCSR5_OFF;
+ if ( (*bcsr5_p & BCSR5_INT_USB) == 0 )
+ *bcsr5_p = (*bcsr5_p | BCSR5_INT_USB);
+ iounmap(bcsr);
+}
+
+/* Note: This is only for PB, not for PB+PIB
+ * On PB only port0 is connected using ULPI */
+static int mpc834x_usb_cfg(void)
+{
+ unsigned long sccr, sicrl;
+ volatile unsigned long *p;
+ unsigned long __iomem *immap;
+ struct device_node *np = NULL;
+ int port0_is_dr = 0;
+
+ if ((np = of_find_compatible_node(np, "usb", "fsl-usb2-dr")) != NULL)
+ port0_is_dr = 1;
+ if ((np = of_find_compatible_node(np, "usb", "fsl-usb2-mph")) != NULL){
+ if (port0_is_dr) {
+ printk(KERN_WARNING
+ "There is only one USB port on PB board! \n");
+ return -1;
+ } else if (!port0_is_dr)
+ /* No usb port enabled */
+ return -1;
+ }
+
+ immap = ioremap(get_immrbase(), 0x100000);
+
+ /* Configure clock */
+ p = (volatile unsigned long *)((u32)immap + MPC83XX_SCCR_OFFS);
+ sccr = *p;
+ if (port0_is_dr)
+ sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
+ else
+ sccr |= MPC83XX_SCCR_USB_MPHCM_11; /* 1:3 */
+ *p = sccr;
+
+ /* Configure Pin */
+ p = (volatile unsigned long *)((u32)immap + MPC83XX_SICRL_OFFS);
+ sicrl = *p;
+ /* set port0 only */
+ if (port0_is_dr)
+ sicrl |= MPC83XX_SICRL_USB0;
+ else
+ sicrl &= ~(MPC83XX_SICRL_USB0);
+ *p = sicrl;
+
+ iounmap(immap);
+ return 0;
+}
+
+#endif /* CONFIG_834x_USB_SUPPORT */
+
/* ************************************************************************
*
* Setup the architecture
@@ -102,6 +169,11 @@ #ifdef CONFIG_PCI
ppc_md.pci_exclude_device = mpc83xx_exclude_device;
#endif
+#ifdef CONFIG_834x_USB_SUPPORT
+ mpc834x_usb_cfg();
+ mpc834x_usb_board_cfg();
+#endif
+
#ifdef CONFIG_ROOT_NFS
ROOT_DEV = Root_NFS;
#else
diff --git a/arch/powerpc/platforms/83xx/mpc834x_sys.h
b/arch/powerpc/platforms/83xx/mpc834x_sys.h
index fedecb7..30e45e8 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_sys.h
+++ b/arch/powerpc/platforms/83xx/mpc834x_sys.h
@@ -20,4 +20,28 @@ #define PIRQB MPC83xx_IRQ_EXT5
#define PIRQC MPC83xx_IRQ_EXT6
#define PIRQD MPC83xx_IRQ_EXT7
+#define BCSR_PHYS_ADDR ((uint)0xf8000000)
+#define BCSR_SIZE ((uint)(32 * 1024))
+
+#define BCSR5_OFF 0x05
+#define BCSR5_INT_USB 0x02
+
+#define MPC83XX_SCCR_OFFS 0xA08
+#define MPC83XX_SCCR_USB_MPHCM_11 0x00c00000
+#define MPC83XX_SCCR_USB_MPHCM_01 0x00400000
+#define MPC83XX_SCCR_USB_MPHCM_10 0x00800000
+#define MPC83XX_SCCR_USB_DRCM_11 0x00300000
+#define MPC83XX_SCCR_USB_DRCM_01 0x00100000
+#define MPC83XX_SCCR_USB_DRCM_10 0x00200000
+
+/* system i/o configuration register low */
+#define MPC83XX_SICRL_OFFS 0x114
+#define MPC83XX_SICRL_USB0 0x40000000
+#define MPC83XX_SICRL_USB1 0x20000000
+
+/* system i/o configuration register high */
+#define MPC83XX_SICRH_OFFS 0x118
+#define MPC83XX_SICRH_USB_UTMI 0x00020000
+
+
#endif /* __MACH_MPC83XX_SYS_H__ */
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