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colibri_vf: Add board_usb_phy_mode function

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Add board_usb_phy_mode function for detecting whether a port is
being used as host or client using a GPIO. On Colibri Vybrid we
provide GPIO 102 for this very same purpose.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
This commit is contained in:
Sanchayan Maity 2015-11-12 11:47:35 +05:30 • committed by Stefano Babic
parent e0a352d1e2
commit 01a8cf9151
1 changed files with 32 additions and 1 deletions
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33
board/toradex/colibri_vf/colibri_vf.c
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@ -21,6 +21,7 @@
#include <i2c.h>
#include <g_dnl.h>
#include <asm/gpio.h>
#include <usb.h>
DECLARE_GLOBAL_DATA_PTR;
@ -34,6 +35,7 @@ DECLARE_GLOBAL_DATA_PTR;
PAD_CTL_DSE_50ohm | PAD_CTL_OBE_IBE_ENABLE)
#define USB_PEN_GPIO 83
#define USB_CDET_GPIO 102
static struct ddrmc_cr_setting colibri_vf_cr_settings[] = {
/* levelling */
@ -92,6 +94,7 @@ static struct ddrmc_cr_setting colibri_vf_cr_settings[] = {
static const iomux_v3_cfg_t usb_pads[] = {
VF610_PAD_PTD4__GPIO_83,
VF610_PAD_PTC29__GPIO_102,
};
int dram_init(void)
@ -280,7 +283,6 @@ static void setup_iomux_gpio(void)
VF610_PAD_PTB23__GPIO_93,
VF610_PAD_PTB26__GPIO_96,
VF610_PAD_PTB28__GPIO_98,
VF610_PAD_PTC29__GPIO_102,
VF610_PAD_PTC30__GPIO_103,
VF610_PAD_PTA7__GPIO_134,
};
@ -509,6 +511,10 @@ int board_init(void)
setbits_le32(&scsc->sosc_ctr, SCSC_SOSC_CTR_SOSC_EN);
#ifdef CONFIG_USB_EHCI_VF
gpio_request(USB_CDET_GPIO, "usb-cdet-gpio");
#endif
return 0;
}
@ -554,4 +560,29 @@ int board_ehci_hcd_init(int port)
}
return 0;
}
int board_usb_phy_mode(int port)
{
switch (port) {
case 0:
/*
* Port 0 is used only in client mode on Colibri Vybrid modules
* Check for state of USB client gpio pin and accordingly return
* USB_INIT_DEVICE or USB_INIT_HOST.
*/
if (gpio_get_value(USB_CDET_GPIO))
return USB_INIT_DEVICE;
else
return USB_INIT_HOST;
case 1:
/* Port 1 is used only in host mode on Colibri Vybrid modules */
return USB_INIT_HOST;
default:
/*
* There are only two USB controllers on Vybrid. Ideally we will
* not reach here. However return USB_INIT_HOST if we do.
*/
return USB_INIT_HOST;
}
}
#endif