MIPS: ath79: add USB platform setup code for AR934X

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4172/
Signed-off-by: John Crispin <blogic@openwrt.org>

2 files changed, 35 insertions, 0 deletions

diff --git a/arch/mips/ath79/dev-usb.c b/arch/mips/ath79/dev-usb.c
index 87fe48e8e301..072bb9be2304 100644
--- a/arch/mips/ath79/dev-usb.c
+++ b/arch/mips/ath79/dev-usb.c
@@ -193,6 +193,32 @@ static void __init ar933x_usb_setup(void)
         platform_device_register(&ath79_ehci_device);
 }
 
+static void __init ar934x_usb_setup(void)
+{
+        u32 bootstrap;
+
+        bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
+        if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE)
+                return;
+
+        ath79_device_reset_set(AR934X_RESET_USBSUS_OVERRIDE);
+        udelay(1000);
+
+        ath79_device_reset_clear(AR934X_RESET_USB_PHY);
+        udelay(1000);
+
+        ath79_device_reset_clear(AR934X_RESET_USB_PHY_ANALOG);
+        udelay(1000);
+
+        ath79_device_reset_clear(AR934X_RESET_USB_HOST);
+        udelay(1000);
+
+        ath79_usb_init_resource(ath79_ehci_resources, AR934X_EHCI_BASE,
+                                AR934X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
+        ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
+        platform_device_register(&ath79_ehci_device);
+}
+
 void __init ath79_register_usb(void)
 {
         if (soc_is_ar71xx())
@@ -205,6 +231,8 @@ void __init ath79_register_usb(void)
                 ar913x_usb_setup();
         else if (soc_is_ar933x())
                 ar933x_usb_setup();
+        else if (soc_is_ar934x())
+                ar934x_usb_setup();
         else
                 BUG();
 }
diff --git a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
index dde504477fac..3ccae12cc7b3 100644
--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
@@ -63,6 +63,8 @@
 
 #define AR934X_WMAC_BASE        (AR71XX_APB_BASE + 0x00100000)
 #define AR934X_WMAC_SIZE        0x20000
+#define AR934X_EHCI_BASE        0x1b000000
+#define AR934X_EHCI_SIZE        0x200
 
 /*
  * DDR_CTRL block
@@ -288,6 +290,11 @@
 #define AR933X_RESET_USB_PHY            BIT(4)
 #define AR933X_RESET_USBSUS_OVERRIDE    BIT(3)
 
+#define AR934X_RESET_USB_PHY_ANALOG     BIT(11)
+#define AR934X_RESET_USB_HOST           BIT(5)
+#define AR934X_RESET_USB_PHY            BIT(4)
+#define AR934X_RESET_USBSUS_OVERRIDE    BIT(3)
+
 #define AR933X_BOOTSTRAP_REF_CLK_40     BIT(0)
 
 #define AR934X_BOOTSTRAP_SW_OPTION8     BIT(23)