[U-Boot] [PATCH 5/5] mx51evk: add end enable USB host support on port 1

[Wolfgang Grandegger]

Signed-off-by: Wolfgang Grandegger <wg at denx.de>
CC: Stefano Babic <sbabic at denx.de>
---
 board/freescale/mx51evk/mx51evk.c |   92 +++++++++++++++++++++++++++++++++++++
 include/configs/mx51evk.h         |   13 +++++
 2 files changed, 105 insertions(+), 0 deletions(-)

diff --git a/board/freescale/mx51evk/mx51evk.c b/board/freescale/mx51evk/mx51evk.c
index 37e6e4d..12354b3 100644
--- a/board/freescale/mx51evk/mx51evk.c
+++ b/board/freescale/mx51evk/mx51evk.c
@@ -172,6 +172,95 @@ static void setup_iomux_spi(void)
 }
 #endif
 
+#ifdef CONFIG_USB_EHCI_MX5
+#define MX51EVK_USBH1_HUB_RST	IMX_GPIO_NR(1, 7)	/* GPIO_1_7 */
+#define MX51EVK_USBH1_STP	IMX_GPIO_NR(1, 27)	/* GPIO_1_27 */
+#define MX51EVK_USB_CLK_EN_B	IMX_GPIO_NR(2, 1)	/* GPIO_2_1 */
+#define MX51EVK_USB_PHY_RESET	IMX_GPIO_NR(2, 5)	/* GPIO_2_5 */
+
+#define USBH1_PAD	(PAD_CTL_SRE_FAST | PAD_CTL_DRV_HIGH |		\
+			 PAD_CTL_100K_PU | PAD_CTL_PUE_PULL |		\
+			 PAD_CTL_PKE_ENABLE | PAD_CTL_HYS_ENABLE)
+#define GPIO_PAD	(PAD_CTL_DRV_HIGH | PAD_CTL_PKE_ENABLE |	\
+			 PAD_CTL_SRE_FAST)
+#define NO_PAD		(1 << 16)
+
+static void setup_usb_h1(void)
+{
+	mxc_request_iomux(MX51_PIN_USBH1_CLK, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_CLK, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DIR, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DIR, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_NXT, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_NXT, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DATA0, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DATA0, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DATA1, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DATA1, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DATA2, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DATA2, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DATA3, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DATA3, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DATA4, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DATA4, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DATA5, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DATA5, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DATA6, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DATA6, USBH1_PAD);
+
+	mxc_request_iomux(MX51_PIN_USBH1_DATA7, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_DATA7, USBH1_PAD);
+
+	/* GPIO_1_7 for USBH1 hub reset */
+	mxc_request_iomux(MX51_PIN_GPIO1_7, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_GPIO1_7, NO_PAD);
+
+	/* GPIO_2_1 */
+	mxc_request_iomux(MX51_PIN_EIM_D17, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_EIM_D17, GPIO_PAD);
+
+	/* GPIO_2_5 for USB PHY reset */
+	mxc_request_iomux(MX51_PIN_EIM_D21, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_EIM_D21, GPIO_PAD);
+}
+
+void board_ehci_hcd_init(int port)
+{
+	/* Set USBH1_STP to GPIO and toggle it */
+	mxc_request_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_GPIO);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_STP, USBH1_PAD);
+
+	gpio_direction_output(MX51EVK_USBH1_STP, 0);
+	gpio_direction_output(MX51EVK_USB_PHY_RESET, 0);
+	mdelay(10);
+	gpio_set_value(MX51EVK_USBH1_STP, 1);
+
+	/* Set back USBH1_STP to be function */
+	mxc_request_iomux(MX51_PIN_USBH1_STP, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_USBH1_STP, USBH1_PAD);
+
+	/* De-assert USB PHY RESETB */
+	gpio_set_value(MX51EVK_USB_PHY_RESET, 1);
+
+	/* Drive USB_CLK_EN_B line low */
+	gpio_direction_output(MX51EVK_USB_CLK_EN_B, 0);
+
+	/* Reset USB hub */
+	gpio_direction_output(MX51EVK_USBH1_HUB_RST, 0);
+	mdelay(2);
+	gpio_set_value(MX51EVK_USBH1_HUB_RST, 1);
+}
+#endif
+
 static void power_init(void)
 {
 	unsigned int val;
@@ -391,6 +480,9 @@ int board_early_init_f(void)
 {
 	setup_iomux_uart();
 	setup_iomux_fec();
+#ifdef CONFIG_USB_EHCI_MX5
+	setup_usb_h1();
+#endif
 
 	return 0;
 }
diff --git a/include/configs/mx51evk.h b/include/configs/mx51evk.h
index 7c7544f..18f1ebd 100644
--- a/include/configs/mx51evk.h
+++ b/include/configs/mx51evk.h
@@ -110,6 +110,19 @@
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_NET
 
+/* USB Configs */
+#define CONFIG_CMD_USB
+#define CONFIG_CMD_FAT
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_EHCI_MX5
+#define CONFIG_USB_STORAGE
+#define CONFIG_USB_HOST_ETHER
+#define CONFIG_USB_ETHER_ASIX
+#define CONFIG_USB_ETHER_SMSC95XX
+#define CONFIG_MXC_USB_PORT	1
+#define CONFIG_MXC_USB_PORTSC	PORT_PTS_ULPI
+#define CONFIG_MXC_USB_FLAGS	MXC_EHCI_POWER_PINS_ENABLED
+
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
 #define CONFIG_CONS_INDEX		1
-- 
1.7.4.1