USB: mx51evk: add end enable USB host support on port 1

Signed-off-by: Wolfgang Grandegger <wg@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Remy Bohmer <linux@bohmer.net>
Cc: Wolfgang Grandegger <wg@denx.de>
Cc: Jason Liu <r64343@freescale.com>

1 files changed, 62 insertions, 0 deletions

diff --git a/board/freescale/mx51evk/mx51evk.c b/board/freescale/mx51evk/mx51evk.c
index e5b0929f65..13c59413ec 100644
--- a/board/freescale/mx51evk/mx51evk.c
+++ b/board/freescale/mx51evk/mx51evk.c
@@ -35,6 +35,7 @@
 #include <pmic.h>
 #include <fsl_pmic.h>
 #include <mc13892.h>
+#include <usb/ehci-fsl.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -172,6 +173,64 @@ static void setup_iomux_spi(void)
 }
 #endif
 
+#ifdef CONFIG_USB_EHCI_MX5
+#define MX51EVK_USBH1_HUB_RST	IOMUX_TO_GPIO(MX51_PIN_GPIO1_7) /* GPIO1_7 */
+#define MX51EVK_USBH1_STP	IOMUX_TO_GPIO(MX51_PIN_USBH1_STP) /* GPIO1_27 */
+#define MX51EVK_USB_CLK_EN_B	IOMUX_TO_GPIO(MX51_PIN_EIM_D18) /* GPIO2_1 */
+#define MX51EVK_USB_PHY_RESET	IOMUX_TO_GPIO(MX51_PIN_EIM_D21) /* GPIO2_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)
+{
+	setup_iomux_usb_h1();
+
+	/* 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;
@@ -394,6 +453,9 @@ int board_early_init_f(void)
 {
 	setup_iomux_uart();
 	setup_iomux_fec();
+#ifdef CONFIG_USB_EHCI_MX5
+	setup_usb_h1();
+#endif
 
 	return 0;
 }