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 (file)
--- a/arch/arm/include/asm/arch-at91/at91_pmc.h
+++ b/arch/arm/include/asm/arch-at91/at91_pmc.h
@@ -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 */
 

diff --git a/board/atmel/at91sam9n12ek/at91sam9n12ek.c b/board/atmel/at91sam9n12ek/at91sam9n12ek.c
index 2ec32eb..9adc992 100644 (file)
--- a/board/atmel/at91sam9n12ek/at91sam9n12ek.c
+++ b/board/atmel/at91sam9n12ek/at91sam9n12ek.c
@@ -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;
 }
 

diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 9e90d59..05d6ff2 100644 (file)
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -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)

diff --git a/include/configs/at91sam9n12ek.h b/include/configs/at91sam9n12ek.h
index 28a7925..cc79f8b 100644 (file)
--- 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 */