efikamx: add usb h1 support

Now that usb has been fixed, we can enable usb h1 on efikamx

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 103 insertions, 4 deletions

diff --git a/arch/arm/mach-mx5/mx51_efika.c b/arch/arm/mach-mx5/mx51_efika.c
index a249ca3c4138..c08ec63415e5 100644
--- a/arch/arm/mach-mx5/mx51_efika.c
+++ b/arch/arm/mach-mx5/mx51_efika.c
@@ -30,6 +30,10 @@
 #include <mach/i2c.h>
 #include <mach/mxc_ehci.h>
 
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
+#include <mach/ulpi.h>
+
 #include <asm/irq.h>
 #include <asm/setup.h>
 #include <asm/mach-types.h>
@@ -40,7 +44,12 @@
 #include "devices.h"
 #include "efika.h"
 
-#define	MX51_USB_PLL_DIV_24_MHZ	0x01
+#define MX51_USB_CTRL_1_OFFSET          0x10
+#define MX51_USB_CTRL_UH1_EXT_CLK_EN    (1 << 25)
+#define	MX51_USB_PLL_DIV_19_2_MHZ	0x01
+
+#define EFIKAMX_USB_HUB_RESET	IMX_GPIO_NR(1, 5)
+#define EFIKAMX_USBH1_STP	IMX_GPIO_NR(1, 27)
 
 #define EFIKAMX_SPI_CS0		IMX_GPIO_NR(4, 24)
 #define EFIKAMX_SPI_CS1		IMX_GPIO_NR(4, 25)
@@ -81,6 +90,29 @@ static iomux_v3_cfg_t mx51efika_pads[] = {
 	MX51_PAD_CSPI1_SS1__GPIO4_25,
 	MX51_PAD_CSPI1_RDY__ECSPI1_RDY,
 	MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK,
+
+	/* USB HOST1 */
+	MX51_PAD_USBH1_CLK__USBH1_CLK,
+	MX51_PAD_USBH1_DIR__USBH1_DIR,
+	MX51_PAD_USBH1_NXT__USBH1_NXT,
+	MX51_PAD_USBH1_DATA0__USBH1_DATA0,
+	MX51_PAD_USBH1_DATA1__USBH1_DATA1,
+	MX51_PAD_USBH1_DATA2__USBH1_DATA2,
+	MX51_PAD_USBH1_DATA3__USBH1_DATA3,
+	MX51_PAD_USBH1_DATA4__USBH1_DATA4,
+	MX51_PAD_USBH1_DATA5__USBH1_DATA5,
+	MX51_PAD_USBH1_DATA6__USBH1_DATA6,
+	MX51_PAD_USBH1_DATA7__USBH1_DATA7,
+
+	/* USB HUB RESET */
+	MX51_PAD_GPIO1_5__GPIO1_5,
+
+	/* WLAN */
+	MX51_PAD_EIM_A22__GPIO2_16,
+	MX51_PAD_EIM_A16__GPIO2_10,
+
+	/* USB PHY RESET */
+	MX51_PAD_EIM_D27__GPIO2_9,
 };
 
 /* Serial ports */
@@ -105,13 +137,13 @@ static int initialize_otg_port(struct platform_device *pdev)
 	/* Set the PHY clock to 19.2MHz */
 	v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
 	v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK;
-	v |= MX51_USB_PLL_DIV_24_MHZ;
+	v |= MX51_USB_PLL_DIV_19_2_MHZ;
 	__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
 	iounmap(usb_base);
 
 	mdelay(10);
 
-	return mx51_initialize_usb_hw(0, MXC_EHCI_INTERNAL_PHY);
+	return mx51_initialize_usb_hw(pdev->id, MXC_EHCI_INTERNAL_PHY);
 }
 
 static struct mxc_usbh_platform_data dr_utmi_config = {
@@ -119,6 +151,73 @@ static struct mxc_usbh_platform_data dr_utmi_config = {
 	.portsc = MXC_EHCI_UTMI_16BIT,
 };
 
+static int initialize_usbh1_port(struct platform_device *pdev)
+{
+	iomux_v3_cfg_t usbh1stp = MX51_PAD_USBH1_STP__USBH1_STP;
+	iomux_v3_cfg_t usbh1gpio = MX51_PAD_USBH1_STP__GPIO1_27;
+	u32 v;
+	void __iomem *usb_base;
+	void __iomem *socregs_base;
+
+	mxc_iomux_v3_setup_pad(usbh1gpio);
+	gpio_request(EFIKAMX_USBH1_STP, "usbh1_stp");
+	gpio_direction_output(EFIKAMX_USBH1_STP, 0);
+	msleep(1);
+	gpio_set_value(EFIKAMX_USBH1_STP, 1);
+	msleep(1);
+
+	usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
+	socregs_base = (void __iomem *)(usb_base + MX5_USBOTHER_REGS_OFFSET);
+
+	/* The clock for the USBH1 ULPI port will come externally */
+	/* from the PHY. */
+	v = __raw_readl(socregs_base + MX51_USB_CTRL_1_OFFSET);
+	__raw_writel(v | MX51_USB_CTRL_UH1_EXT_CLK_EN,
+			socregs_base + MX51_USB_CTRL_1_OFFSET);
+
+	iounmap(usb_base);
+
+	gpio_free(EFIKAMX_USBH1_STP);
+	mxc_iomux_v3_setup_pad(usbh1stp);
+
+	mdelay(10);
+
+	return mx51_initialize_usb_hw(0, MXC_EHCI_ITC_NO_THRESHOLD);
+}
+
+static struct mxc_usbh_platform_data usbh1_config = {
+	.init   = initialize_usbh1_port,
+	.portsc = MXC_EHCI_MODE_ULPI,
+};
+
+static void mx51_efika_hubreset(void)
+{
+	gpio_request(EFIKAMX_USB_HUB_RESET, "usb_hub_rst");
+	gpio_direction_output(EFIKAMX_USB_HUB_RESET, 1);
+	msleep(1);
+	gpio_set_value(EFIKAMX_USB_HUB_RESET, 0);
+	msleep(1);
+	gpio_set_value(EFIKAMX_USB_HUB_RESET, 1);
+}
+
+static void __init mx51_efika_usb(void)
+{
+	mx51_efika_hubreset();
+
+	/* pulling it low, means no USB at all... */
+	gpio_request(EFIKA_USB_PHY_RESET, "usb_phy_reset");
+	gpio_direction_output(EFIKA_USB_PHY_RESET, 0);
+	msleep(1);
+	gpio_set_value(EFIKA_USB_PHY_RESET, 1);
+
+	usbh1_config.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
+				ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT |
+				ULPI_OTG_EXTVBUSIND);
+
+	mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
+	mxc_register_device(&mxc_usbh1_device, &usbh1_config);
+}
+
 static struct mtd_partition mx51_efika_spi_nor_partitions[] = {
 	{
 	 .name = "u-boot",
@@ -164,8 +263,8 @@ void __init efika_board_common_init(void)
 {
 	mxc_iomux_v3_setup_multiple_pads(mx51efika_pads,
 					ARRAY_SIZE(mx51efika_pads));
-	mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
 	imx51_add_imx_uart(0, &uart_pdata);
+	mx51_efika_usb();
 	imx51_add_sdhci_esdhc_imx(0, NULL);
 
 	spi_register_board_info(mx51_efika_spi_board_info,