[PATCH] MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.

[PATCH] MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.

[Magnus Lilja]

Tested on actual hardware using the g_ether and g_serial gadget drivers.

Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
---

Applies on top of Linus' git tree.
To test this the mx3_defconfig was used but with USB gadget activated.

 arch/arm/mach-mx3/mach-mx31_3ds.c |   55 +++++++++++++++++++++++++++++++++++++
 1 files changed, 55 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-mx3/mach-mx31_3ds.c b/arch/arm/mach-mx3/mach-mx31_3ds.c
index f54af1e..55d6117 100644
--- a/arch/arm/mach-mx3/mach-mx31_3ds.c
+++ b/arch/arm/mach-mx3/mach-mx31_3ds.c
@@ -16,6 +16,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <linux/delay.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/clk.h>
@@ -26,6 +27,7 @@
 #include <linux/mfd/mc13783.h>
 #include <linux/spi/spi.h>
 #include <linux/regulator/machine.h>
+#include <linux/fsl_devices.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -65,6 +67,21 @@ static int mx31_3ds_pins[] = {
 	MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
 	/* MC13783 IRQ */
 	IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
+	/* USB OTG reset */
+	IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
+	/* USB OTG */
+	MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
+	MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
+	MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
+	MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
+	MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
+	MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
+	MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
+	MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
+	MX31_PIN_USBOTG_CLK__USBOTG_CLK,
+	MX31_PIN_USBOTG_DIR__USBOTG_DIR,
+	MX31_PIN_USBOTG_NXT__USBOTG_NXT,
+	MX31_PIN_USBOTG_STP__USBOTG_STP,
 };
 
 /* Regulators */
@@ -126,6 +143,41 @@ static struct mxc_nand_platform_data imx31_3ds_nand_flash_pdata = {
 #endif
 };
 
+/*
+ * USB OTG
+ */
+
+#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
+		     PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+
+#define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
+
+static void mx31_3ds_usbotg_init(void)
+{
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
+	mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
+
+	gpio_request(USBOTG_RST_B, "otgusb-reset");
+	gpio_direction_output(USBOTG_RST_B, 0);
+	mdelay(1);
+	gpio_set_value(USBOTG_RST_B, 1);
+}
+
+static struct fsl_usb2_platform_data usbotg_pdata = {
+	.operating_mode = FSL_USB2_DR_DEVICE,
+	.phy_mode	= FSL_USB2_PHY_ULPI,
+};
+
 static struct imxuart_platform_data uart_pdata = {
 	.flags = IMXUART_HAVE_RTSCTS,
 };
@@ -315,6 +367,9 @@ static void __init mxc_board_init(void)
 	spi_register_board_info(mx31_3ds_spi_devs,
 						ARRAY_SIZE(mx31_3ds_spi_devs));
 
+	mx31_3ds_usbotg_init();
+	mxc_register_device(&mxc_otg_udc_device, &usbotg_pdata);
+
 	if (!mx31_3ds_init_expio())
 		platform_device_register(&smsc911x_device);
 }
-- 
1.6.4.2

[PATCH] MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.

[Fabio Estevam]

Hi Magnus,

--- On Fri, 5/14/10, Magnus Lilja <lilja.magnus@gmail.com> wrote:

> From: Magnus Lilja <lilja.magnus@gmail.com>
> Subject: [PATCH] MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.
> To: linux-arm-kernel at lists.infradead.org
> Cc: s.hauer at pengutronix.de
> Date: Friday, May 14, 2010, 12:08 PM
> Tested on actual hardware using the
> g_ether and g_serial gadget drivers.
> 
> Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
> ---
> 
> Applies on top of Linus' git tree.
> To test this the mx3_defconfig was used but with USB gadget
> activated.

Would be good to send a patch for updating the mx3_defconfig with the USB gadget support.

Regards,

Fabio Estevam


      

[PATCH] MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.

[Magnus Lilja]

Hi Fabio

On 14 May 2010 18:00, Fabio Estevam <fabioestevam@yahoo.com> wrote:
> Hi Magnus,
>
> --- On Fri, 5/14/10, Magnus Lilja <lilja.magnus@gmail.com> wrote:
>
>> From: Magnus Lilja <lilja.magnus@gmail.com>
>> Subject: [PATCH] MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.
>> To: linux-arm-kernel at lists.infradead.org
>> Cc: s.hauer at pengutronix.de
>> Date: Friday, May 14, 2010, 12:08 PM
>> Tested on actual hardware using the
>> g_ether and g_serial gadget drivers.
>>
>> Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
>> ---
>>
>> Applies on top of Linus' git tree.
>> To test this the mx3_defconfig was used but with USB gadget
>> activated.
>
> Would be good to send a patch for updating the mx3_defconfig with the USB gadget support.

Yes, perhaps that can be done later when bringing the defconfig
uptodate (also awaiting inclusion of Alberto Panizzo's keypad patch).

Regards, Magnus Lilja

[PATCH] MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.

[Fabio Estevam]

Hi Magnus,

--- On Fri, 5/14/10, Magnus Lilja <lilja.magnus@gmail.com> wrote:

...

> > Would be good to send a patch for updating the
> mx3_defconfig with the USB gadget support.
> 
> Yes, perhaps that can be done later when bringing the
> defconfig
> uptodate (also awaiting inclusion of Alberto Panizzo's
> keypad patch).

Alberto's keypad patches are in mxc-master now. Would you care to update the mx3_defconfig ?

Regards,

Fabio Estevam


      

[PATCH] MXC: Add USB OTG (device) for i.MX31 PDK (3DS) board.

[Magnus Lilja]

Hi Fabio

On 2010-05-20 19:36, Fabio Estevam wrote:
> Hi Magnus,
> 
> --- On Fri, 5/14/10, Magnus Lilja <lilja.magnus@gmail.com> wrote:
> 
> ...
> 
>>> Would be good to send a patch for updating the
>> mx3_defconfig with the USB gadget support.
>>
>> Yes, perhaps that can be done later when bringing the
>> defconfig
>> uptodate (also awaiting inclusion of Alberto Panizzo's
>> keypad patch).
> 
> Alberto's keypad patches are in mxc-master now. Would you care to update the mx3_defconfig ?

Sure, I'll give it a try.

/Magnus