arm: atmel: at91sam9n12ek: add usb host support
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>
diff --git a/arch/arm/include/asm/arch-at91/at91_pmc.h b/arch/arm/include/asm/arch-at91/at91_pmc.h
index 003920c..7b36f74 100644
--- a/arch/arm/include/asm/arch-at91/at91_pmc.h
+++ b/arch/arm/include/asm/arch-at91/at91_pmc.h
@@ -233,6 +233,8 @@
#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 */
diff --git a/board/atmel/at91sam9n12ek/at91sam9n12ek.c b/board/atmel/at91sam9n12ek/at91sam9n12ek.c
index 2ec32eb..9adc992 100644
--- a/board/atmel/at91sam9n12ek/at91sam9n12ek.c
+++ b/board/atmel/at91sam9n12ek/at91sam9n12ek.c
@@ -199,6 +199,13 @@
}
#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 @@
at91sam9n12ek_ks8851_hw_init();
#endif
+#ifdef CONFIG_USB_ATMEL
+ at91sam9n12ek_usb_hw_init();
+#endif
+
return 0;
}
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 9e90d59..05d6ff2 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -20,11 +20,14 @@
#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 @@
#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)
diff --git a/include/configs/at91sam9n12ek.h b/include/configs/at91sam9n12ek.h
index 28a7925..cc79f8b 100644
--- a/include/configs/at91sam9n12ek.h
+++ b/include/configs/at91sam9n12ek.h
@@ -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 */