Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
---
arch/mips/boards/tplink-mr3020/board.c | 55 ++++++++++++++++++++++++++++++++++
arch/mips/mach-ath79/Kconfig | 4 +++
2 files changed, 59 insertions(+)
diff --git a/arch/mips/boards/tplink-mr3020/board.c b/arch/mips/boards/tplink-mr3020/board.c
index 318998c..032ad7d 100644
--- a/arch/mips/boards/tplink-mr3020/board.c
+++ b/arch/mips/boards/tplink-mr3020/board.c
@@ -25,3 +25,58 @@ static int model_hostname_init(void)
return 0;
}
postcore_initcall(model_hostname_init);
+
+#include <asm/addrspace.h>
+#include <mach/ath79.h>
+#include <usb/ehci.h>
+
+#define AR933X_RESET_REG_RESET_MODULE 0x1c
+#define AR933X_RESET_USB_HOST BIT(5)
+#define AR933X_RESET_USB_PHY BIT(4)
+#define AR933X_RESET_USBSUS_OVERRIDE BIT(3)
+
+#define AR933X_EHCI_BASE 0x1b000000
+#define AR933X_EHCI_SIZE 0x1000
+
+static void ath79_device_reset_set(u32 mask)
+{
+ u32 reg;
+ u32 t;
+
+ reg = AR933X_RESET_REG_RESET_MODULE;
+ t = ath79_reset_rr(reg);
+ ath79_reset_wr(reg, t | mask);
+}
+
+static void ath79_device_reset_clear(u32 mask)
+{
+ u32 reg;
+ u32 t;
+
+ reg = AR933X_RESET_REG_RESET_MODULE;
+ t = ath79_reset_rr(reg);
+ ath79_reset_wr(reg, t & ~mask);
+}
+
+static struct ehci_platform_data ehci_pdata = {
+ .flags = EHCI_HAS_TT | EHCI_BE_MMIO,
+};
+
+static int ehci_init(void)
+{
+ ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
+ mdelay(10); mdelay(10); mdelay(10);
+
+ ath79_device_reset_clear(AR933X_RESET_USB_HOST);
+ mdelay(10); mdelay(10); mdelay(10);
+
+ ath79_device_reset_clear(AR933X_RESET_USB_PHY);
+ mdelay(10); mdelay(10); mdelay(10);
+
+ add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC,
+ KSEG1ADDR(AR933X_EHCI_BASE),
+ &ehci_pdata);
+
+ return 0;
+}
+device_initcall(ehci_init);
diff --git a/arch/mips/mach-ath79/Kconfig b/arch/mips/mach-ath79/Kconfig
index f730b37..24ec078 100644
--- a/arch/mips/mach-ath79/Kconfig
+++ b/arch/mips/mach-ath79/Kconfig
@@ -12,6 +12,10 @@ config BOARD_TPLINK_MR3020
select HAVE_PBL_IMAGE
select HAVE_IMAGE_COMPRESSION
select HAS_NMON
+ select USB_HOST
+ select HAS_DMA
+ select USB_EHCI
+ select USB_EHCI_BIG_ENDIAN_MMIO
endchoice
--
2.5.0
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