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 --- Changes in V4: - cm_fx6_init_usb_otg() returns an int - Use setbits_le32() - Don't treat int port as a bool in board_ehci_power()
Changes in V3: - No changes
Changes in V2: - No changes
board/compulab/cm_fx6/cm_fx6.c | 76 ++++++++++++++++++++++++++++++++++++++++++ board/compulab/cm_fx6/common.h | 3 ++ include/configs/cm_fx6.h | 10 ++++++ 3 files changed, 89 insertions(+)
diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c index 681b1ee..26f0417 100644 --- a/board/compulab/cm_fx6/cm_fx6.c +++ b/board/compulab/cm_fx6/cm_fx6.c @@ -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) diff --git a/board/compulab/cm_fx6/common.h b/board/compulab/cm_fx6/common.h index 1b19f16..f841c90 100644 --- a/board/compulab/cm_fx6/common.h +++ b/board/compulab/cm_fx6/common.h @@ -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); diff --git a/include/configs/cm_fx6.h b/include/configs/cm_fx6.h index 22b3376..0c25dda 100644 --- a/include/configs/cm_fx6.h +++ b/include/configs/cm_fx6.h @@ -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