MIPS: ath79: add AR933X specific USB platform device registration

Also select the USB_ARCH_HAS_EHCI symbol in order to make the
EHCI driver available.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Kathy Giori <kgiori@qca.qualcomm.com>
Cc: "Luis R.  Rodriguez" <rodrigue@qca.qualcomm.com>
Patchwork: https://patchwork.linux-mips.org/patch/2527/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 27 insertions, 0 deletions

diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig
index 90edf27609e8..c3680c83a102 100644
--- a/arch/mips/ath79/Kconfig
+++ b/arch/mips/ath79/Kconfig
@@ -42,6 +42,7 @@ config SOC_AR913X
         def_bool n
 
 config SOC_AR933X
+        select USB_ARCH_HAS_EHCI
         def_bool n
 
 config ATH79_DEV_AR913X_WMAC
diff --git a/arch/mips/ath79/dev-usb.c b/arch/mips/ath79/dev-usb.c
index c3f1999c761b..002d6d2afe04 100644
--- a/arch/mips/ath79/dev-usb.c
+++ b/arch/mips/ath79/dev-usb.c
@@ -163,6 +163,23 @@ static void __init ar913x_usb_setup(void)
         platform_device_register(&ath79_ehci_device);
 }
 
+static void __init ar933x_usb_setup(void)
+{
+        ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
+        mdelay(10);
+
+        ath79_device_reset_clear(AR933X_RESET_USB_HOST);
+        mdelay(10);
+
+        ath79_device_reset_clear(AR933X_RESET_USB_PHY);
+        mdelay(10);
+
+        ath79_ehci_resources[0].start = AR933X_EHCI_BASE;
+        ath79_ehci_resources[0].end = AR933X_EHCI_BASE + AR933X_EHCI_SIZE - 1;
+        ath79_ehci_device.name = "ar933x-ehci";
+        platform_device_register(&ath79_ehci_device);
+}
+
 void __init ath79_register_usb(void)
 {
         if (soc_is_ar71xx())
@@ -173,6 +190,8 @@ void __init ath79_register_usb(void)
                 ar724x_usb_setup();
         else if (soc_is_ar913x())
                 ar913x_usb_setup();
+        else if (soc_is_ar933x())
+                ar933x_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 e65c10dd159b..733bacace778 100644
--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
@@ -56,6 +56,9 @@
 #define AR933X_UART_BASE        (AR71XX_APB_BASE + 0x00020000)
 #define AR933X_UART_SIZE        0x14
 
+#define AR933X_EHCI_BASE        0x1b000000
+#define AR933X_EHCI_SIZE        0x1000
+
 /*
  * DDR_CTRL block
  */
@@ -230,6 +233,10 @@
 #define AR913X_RESET_USB_HOST           BIT(5)
 #define AR913X_RESET_USB_PHY            BIT(4)
 
+#define AR933X_RESET_USB_HOST           BIT(5)
+#define AR933X_RESET_USB_PHY            BIT(4)
+#define AR933X_RESET_USBSUS_OVERRIDE    BIT(3)
+
 #define AR933X_BOOTSTRAP_REF_CLK_40     BIT(0)
 
 #define REV_ID_MAJOR_MASK               0xfff0