[U-Boot] [PATCH 3/3] imx:mx6slevk add board level support for usb

[Peng Fan]

Add pinmux settings, implement board_ehci_hcd_init, board_usb_phy_mode

There are two usb port on mx6slevk board:
1. otg port
2. host port
The following are the connection between usb controller and board usb
interface, host port has not ID pin set:
otg1 core <---> board otg port
otg2 core <---> board host port
In order to make host port work, board_usb_phy_mode return USB_INIT_HOST
to let host port work in host mode.

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Signed-off-by: Ye Li <B37916 at freescale.com>
---

Changes v4:
 reimplement board_usb_phy_mode

Changes v3:
 implement board_usb_phy_mode

Changes v2:
 Add otg polarity setting
 move pinmux into board_init
 set pinmux setting static

 arch/arm/include/asm/arch-mx6/mx6sl_pins.h |  5 +++
 board/freescale/mx6slevk/mx6slevk.c        | 49 ++++++++++++++++++++++++++++++
 include/configs/mx6slevk.h                 | 14 +++++++++
 3 files changed, 68 insertions(+)

diff --git a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
index d9db58c..9ded3d8 100644
--- a/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
+++ b/arch/arm/include/asm/arch-mx6/mx6sl_pins.h
@@ -53,5 +53,10 @@ enum {
 	MX6_PAD_FEC_REF_CLK__FEC_REF_OUT			= IOMUX_PAD(0x424, 0x134, 0x10, 0x000, 0, 0),
 	MX6_PAD_FEC_RX_ER__GPIO_4_19				= IOMUX_PAD(0x0428, 0x0138, 5, 0x0000, 0, 0),
 	MX6_PAD_FEC_TX_CLK__GPIO_4_21				= IOMUX_PAD(0x0434, 0x0144, 5, 0x0000, 0, 0),
+
+	MX6_PAD_EPDC_PWRCOM__ANATOP_USBOTG1_ID			= IOMUX_PAD(0x03D0, 0x00E0, 4, 0x05DC, 0, 0),
+
+	MX6_PAD_KEY_COL4__USB_USBOTG1_PWR			= IOMUX_PAD(0x0484, 0x017C, 6, 0x0000, 0, 0),
+	MX6_PAD_KEY_COL5__USB_USBOTG2_PWR			= IOMUX_PAD(0x0488, 0x0180, 6, 0x0000, 0, 0),
 };
 #endif	/* __ASM_ARCH_MX6_MX6SL_PINS_H__ */
diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
index e76c343..3ae2c46 100644
--- a/board/freescale/mx6slevk/mx6slevk.c
+++ b/board/freescale/mx6slevk/mx6slevk.c
@@ -20,6 +20,8 @@
 #include <fsl_esdhc.h>
 #include <mmc.h>
 #include <netdev.h>
+#include <usb.h>
+#include <usb/ehci-fsl.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -243,6 +245,48 @@ static int setup_fec(void)
 }
 #endif
 
+#ifdef CONFIG_USB_EHCI_MX6
+#define USB_OTHERREGS_OFFSET	0x800
+#define UCTRL_PWR_POL		(1 << 9)
+
+static iomux_v3_cfg_t const usb_otg_pads[] = {
+	/* OTG1 */
+	MX6_PAD_KEY_COL4__USB_USBOTG1_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_EPDC_PWRCOM__ANATOP_USBOTG1_ID | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* OTG2 */
+	MX6_PAD_KEY_COL5__USB_USBOTG2_PWR | MUX_PAD_CTRL(NO_PAD_CTRL)
+};
+
+static void setup_usb(void)
+{
+	imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
+					 ARRAY_SIZE(usb_otg_pads));
+}
+
+int board_usb_phy_mode(int port)
+{
+	if (port == 1)
+		return USB_INIT_HOST;
+	else
+		return usb_phy_mode(port);
+}
+
+int board_ehci_hcd_init(int port)
+{
+	u32 *usbnc_usb_ctrl;
+
+	if (port > 1)
+		return -EINVAL;
+
+	usbnc_usb_ctrl = (u32 *)(USB_BASE_ADDR + USB_OTHERREGS_OFFSET +
+				 port * 4);
+
+	/* Set Power polarity */
+	setbits_le32(usbnc_usb_ctrl, UCTRL_PWR_POL);
+
+	return 0;
+}
+#endif
 
 int board_early_init_f(void)
 {
@@ -261,6 +305,11 @@ int board_init(void)
 #ifdef	CONFIG_FEC_MXC
 	setup_fec();
 #endif
+
+#ifdef CONFIG_USB_EHCI_MX6
+	setup_usb();
+#endif
+
 	return 0;
 }
 
diff --git a/include/configs/mx6slevk.h b/include/configs/mx6slevk.h
index 4fcaf51..bd57159 100644
--- a/include/configs/mx6slevk.h
+++ b/include/configs/mx6slevk.h
@@ -209,6 +209,20 @@
 #define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
 #endif
 
+/* USB Configs */
+#define CONFIG_CMD_USB
+#ifdef CONFIG_CMD_USB
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_EHCI_MX6
+#define CONFIG_USB_STORAGE
+#define CONFIG_EHCI_HCD_INIT_AFTER_RESET
+#define CONFIG_USB_HOST_ETHER
+#define CONFIG_USB_ETHER_ASIX
+#define CONFIG_MXC_USB_PORTSC		(PORT_PTS_UTMI | PORT_PTS_PTW)
+#define CONFIG_MXC_USB_FLAGS		0
+#define CONFIG_USB_MAX_CONTROLLER_COUNT	2
+#endif
+
 #define CONFIG_SYS_FSL_USDHC_NUM	3
 #if defined(CONFIG_ENV_IS_IN_MMC)
 #define CONFIG_SYS_MMC_ENV_DEV		1	/* SDHC2*/
-- 
1.8.4