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arm: mx6: cm_fx6: add usb support

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Add USB and USB OTG host support for Compulab CM-FX6 CoM.

Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tom Rini <trini@ti.com>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
This commit is contained in:
Nikita Kiryanov 2014-08-20 15:09:03 +03:00 committed by Stefano Babic
parent 02b1343e4a
commit 0f3effb99f
3 changed files with 89 additions and 0 deletions
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76
board/compulab/cm_fx6/cm_fx6.c
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@ -15,12 +15,88 @@
#include <fdt_support.h>
#include <asm/arch/crm_regs.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/iomux.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include "common.h"
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_USB_EHCI_MX6
#define WEAK_PULLDOWN (PAD_CTL_PUS_100K_DOWN | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
PAD_CTL_HYS | PAD_CTL_SRE_SLOW)
static int cm_fx6_usb_hub_reset(void)
{
int err;
err = gpio_request(CM_FX6_USB_HUB_RST, "usb hub rst");
if (err) {
printf("USB hub rst gpio request failed: %d\n", err);
return -1;
}
SETUP_IOMUX_PAD(PAD_SD3_RST__GPIO7_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL));
gpio_direction_output(CM_FX6_USB_HUB_RST, 0);
udelay(10);
gpio_direction_output(CM_FX6_USB_HUB_RST, 1);
mdelay(1);
return 0;
}
static int cm_fx6_init_usb_otg(void)
{
int ret;
struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
ret = gpio_request(SB_FX6_USB_OTG_PWR, "usb-pwr");
if (ret) {
printf("USB OTG pwr gpio request failed: %d\n", ret);
return ret;
}
SETUP_IOMUX_PAD(PAD_EIM_D22__GPIO3_IO22 | MUX_PAD_CTRL(NO_PAD_CTRL));
SETUP_IOMUX_PAD(PAD_ENET_RX_ER__USB_OTG_ID |
MUX_PAD_CTRL(WEAK_PULLDOWN));
clrbits_le32(&iomux->gpr[1], IOMUXC_GPR1_OTG_ID_MASK);
/* disable ext. charger detect, or it'll affect signal quality at dp. */
return gpio_direction_output(SB_FX6_USB_OTG_PWR, 0);
}
#define MX6_USBNC_BASEADDR 0x2184800
#define USBNC_USB_H1_PWR_POL (1 << 9)
int board_ehci_hcd_init(int port)
{
u32 *usbnc_usb_uh1_ctrl = (u32 *)(MX6_USBNC_BASEADDR + 4);
switch (port) {
case 0:
return cm_fx6_init_usb_otg();
case 1:
SETUP_IOMUX_PAD(PAD_GPIO_0__USB_H1_PWR |
MUX_PAD_CTRL(NO_PAD_CTRL));
/* Set PWR polarity to match power switch's enable polarity */
setbits_le32(usbnc_usb_uh1_ctrl, USBNC_USB_H1_PWR_POL);
return cm_fx6_usb_hub_reset();
default:
break;
}
return 0;
}
int board_ehci_power(int port, int on)
{
if (port == 0)
return gpio_direction_output(SB_FX6_USB_OTG_PWR, on);
return 0;
}
#endif
#ifdef CONFIG_FEC_MXC
#define ENET_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm | PAD_CTL_HYS)

3
board/compulab/cm_fx6/common.h
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@ -16,6 +16,9 @@
#define CM_FX6_ECSPI_BUS0_CS0 IMX_GPIO_NR(2, 30)
#define CM_FX6_GREEN_LED IMX_GPIO_NR(2, 31)
#define CM_FX6_ENET_NRST IMX_GPIO_NR(2, 8)
#define CM_FX6_ENET_NRST IMX_GPIO_NR(2, 8)
#define CM_FX6_USB_HUB_RST IMX_GPIO_NR(7, 8)
#define SB_FX6_USB_OTG_PWR IMX_GPIO_NR(3, 22)
void cm_fx6_set_usdhc_iomux(void);
void cm_fx6_set_ecspi_iomux(void);

10
include/configs/cm_fx6.h
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@ -200,6 +200,16 @@
#define CONFIG_NETMASK 255.255.255.0
#define CONFIG_NET_RETRY_COUNT 5
/* USB */
#define CONFIG_CMD_USB
#define CONFIG_USB_EHCI
#define CONFIG_USB_EHCI_MX6
#define CONFIG_USB_STORAGE
#define CONFIG_MXC_USB_PORTSC (PORT_PTS_UTMI | PORT_PTS_PTW)
#define CONFIG_MXC_USB_FLAGS 0
#define CONFIG_USB_MAX_CONTROLLER_COUNT 2
#define CONFIG_EHCI_HCD_INIT_AFTER_RESET /* For OTG port */
/* GPIO */
#define CONFIG_MXC_GPIO