diff options
| -rw-r--r-- | arch/sh/kernel/cpu/sh4a/setup-sh7786.c | 83 | ||||
| -rw-r--r-- | drivers/usb/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/usb/host/ohci-hcd.c | 3 |
3 files changed, 86 insertions, 1 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c index 249b99e1adb..5a47e1cf442 100644 --- a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c +++ b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c @@ -18,6 +18,7 @@ #include <linux/serial_sci.h> #include <linux/io.h> #include <linux/mm.h> +#include <linux/dma-mapping.h> #include <asm/mmzone.h> static struct plat_sci_port sci_platform_data[] = { @@ -68,12 +69,94 @@ static struct platform_device sci_device = { }, }; +static struct resource usb_ohci_resources[] = { + [0] = { + .start = 0xffe70400, + .end = 0xffe704ff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = 77, + .end = 77, + .flags = IORESOURCE_IRQ, + }, +}; + +static u64 usb_ohci_dma_mask = DMA_BIT_MASK(32); +static struct platform_device usb_ohci_device = { + .name = "sh_ohci", + .id = -1, + .dev = { + .dma_mask = &usb_ohci_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, + .num_resources = ARRAY_SIZE(usb_ohci_resources), + .resource = usb_ohci_resources, +}; + static struct platform_device *sh7786_devices[] __initdata = { &sci_device, + &usb_ohci_device, }; + +/* + * Please call this function if your platform board + * use external clock for USB + * */ +#define USBCTL0 0xffe70858 +#define CLOCK_MODE_MASK 0xffffff7f +#define EXT_CLOCK_MODE 0x00000080 +void __init sh7786_usb_use_exclock(void) +{ + u32 val = __raw_readl(USBCTL0) & CLOCK_MODE_MASK; + __raw_writel(val | EXT_CLOCK_MODE, USBCTL0); +} + +#define USBINITREG1 0xffe70094 +#define USBINITREG2 0xffe7009c +#define USBINITVAL1 0x00ff0040 +#define USBINITVAL2 0x00000001 + +#define USBPCTL1 0xffe70804 +#define USBST 0xffe70808 +#define PHY_ENB 0x00000001 +#define PLL_ENB 0x00000002 +#define PHY_RST 0x00000004 +#define ACT_PLL_STATUS 0xc0000000 +static void __init sh7786_usb_setup(void) +{ + int i = 1000000; + + /* + * USB initial settings + * + * The following settings are necessary + * for using the USB modules. + * + * see "USB Inital Settings" for detail + */ + __raw_writel(USBINITVAL1, USBINITREG1); + __raw_writel(USBINITVAL2, USBINITREG2); + + /* + * Set the PHY and PLL enable bit + */ + __raw_writel(PHY_ENB | PLL_ENB, USBPCTL1); + while (i-- && + ((__raw_readl(USBST) & ACT_PLL_STATUS) != ACT_PLL_STATUS)) + cpu_relax(); + + if (i) { + /* Set the PHY RST bit */ + __raw_writel(PHY_ENB | PLL_ENB | PHY_RST, USBPCTL1); + printk(KERN_INFO "sh7786 usb setup done\n"); + } +} + static int __init sh7786_devices_setup(void) { + sh7786_usb_setup(); return platform_add_devices(sh7786_devices, ARRAY_SIZE(sh7786_devices)); } diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 83babb0a1df..c6c816b7ecb 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -47,6 +47,7 @@ config USB_ARCH_HAS_OHCI default y if CPU_SUBTYPE_SH7720 default y if CPU_SUBTYPE_SH7721 default y if CPU_SUBTYPE_SH7763 + default y if CPU_SUBTYPE_SH7786 # more: default PCI diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 5cf5f1eca4f..7658589edb1 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1049,7 +1049,8 @@ MODULE_LICENSE ("GPL"); #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \ defined(CONFIG_CPU_SUBTYPE_SH7721) || \ - defined(CONFIG_CPU_SUBTYPE_SH7763) + defined(CONFIG_CPU_SUBTYPE_SH7763) || \ + defined(CONFIG_CPU_SUBTYPE_SH7786) #include "ohci-sh.c" #define PLATFORM_DRIVER ohci_hcd_sh_driver #endif |