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arm: atmel: at91sam9n12ek: add usb host support

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Add usb host support for at91sam9n12ek board.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
This commit is contained in:
Bo Shen 2013-10-21 16:13:59 +08:00 committed by Andreas Bießmann
parent 32e4f6bf2e
commit d9bef0ad2d
4 changed files with 34 additions and 2 deletions
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2
arch/arm/include/asm/arch-at91/at91_pmc.h
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@ -233,6 +233,8 @@ typedef struct at91_pmc {
#endif
#define AT91_PMC_USBS_USB_PLLA (0x0) /* USB Clock Input is PLLA */
#define AT91_PMC_USBS_USB_UPLL (0x1) /* USB Clock Input is UPLL */
#define AT91_PMC_USBS_USB_PLLB (0x1) /* USB Clock Input is PLLB, AT91SAM9N12 only */
#define AT91_PMC_USB_DIV_2 (0x1 << 8) /* USB Clock divided by 2 */
#define AT91_PMC_USBDIV_8 (0x7 << 8) /* USB Clock divided by 8 */
#define AT91_PMC_USBDIV_10 (0x9 << 8) /* USB Clock divided by 10 */

11
board/atmel/at91sam9n12ek/at91sam9n12ek.c
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@ -199,6 +199,13 @@ void at91sam9n12ek_ks8851_hw_init(void)
}
#endif
#ifdef CONFIG_USB_ATMEL
void at91sam9n12ek_usb_hw_init(void)
{
at91_set_pio_output(AT91_PIO_PORTB, 7, 0);
}
#endif
int board_early_init_f(void)
{
/* Enable clocks for all PIOs */
@ -230,6 +237,10 @@ int board_init(void)
at91sam9n12ek_ks8851_hw_init();
#endif
#ifdef CONFIG_USB_ATMEL
at91sam9n12ek_usb_hw_init();
#endif
return 0;
}

11
drivers/usb/host/ohci-at91.c
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@ -20,11 +20,14 @@ int usb_cpu_init(void)
#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
defined(CONFIG_AT91SAM9261)
defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9N12)
/* Enable PLLB */
writel(get_pllb_init(), &pmc->pllbr);
while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
;
#ifdef CONFIG_AT91SAM9N12
writel(AT91_PMC_USBS_USB_PLLB | AT91_PMC_USB_DIV_2, &pmc->usb);
#endif
#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) || \
defined(CONFIG_AT91SAM9X5) || defined(CONFIG_SAMA5D3)
/* Enable UPLL */
@ -71,7 +74,11 @@ int usb_cpu_stop(void)
#endif
#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
defined(CONFIG_AT91SAM9N12)
#ifdef CONFIG_AT91SAM9N12
writel(0, &pmc->usb);
#endif
/* Disable PLLB */
writel(0, &pmc->pllbr);
while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)

12
include/configs/at91sam9n12ek.h
View File

@ -83,6 +83,7 @@
#define CONFIG_CMD_SF
#define CONFIG_CMD_MMC
#define CONFIG_CMD_FAT
#define CONFIG_CMD_USB
#define CONFIG_NR_DRAM_BANKS 1
#define CONFIG_SYS_SDRAM_BASE 0x20000000
@ -163,6 +164,17 @@
#define CONFIG_SYS_MEMTEST_START CONFIG_SYS_SDRAM_BASE
#define CONFIG_SYS_MEMTEST_END 0x26e00000
/* USB host */
#ifdef CONFIG_CMD_USB
#define CONFIG_USB_ATMEL
#define CONFIG_USB_OHCI_NEW
#define CONFIG_SYS_USB_OHCI_CPU_INIT
#define CONFIG_SYS_USB_OHCI_REGS_BASE ATMEL_BASE_OHCI
#define CONFIG_SYS_USB_OHCI_SLOT_NAME "at91sam9n12"
#define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 1
#define CONFIG_USB_STORAGE
#endif
#ifdef CONFIG_SYS_USE_SPIFLASH
/* bootstrap + u-boot + env + linux in dataflash on CS0 */