diff options
| author | Sanchayan Maity <maitysanchayan@gmail.com> | 2015-11-12 11:47:35 +0530 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2015-11-25 09:51:47 +0100 |
| commit | 01a8cf91513981d05bf89840d768e9c060ee998b (patch) | |
| tree | 28c2c9d92d52d903a43c2b430b6e9883b16dc2f3 /board/toradex | |
| parent | e0a352d1e2dd060c2d43da1cf2b91878e997ce1e (diff) | |
colibri_vf: Add board_usb_phy_mode function
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>
Diffstat (limited to 'board/toradex')
| -rw-r--r-- | board/toradex/colibri_vf/colibri_vf.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/board/toradex/colibri_vf/colibri_vf.c b/board/toradex/colibri_vf/colibri_vf.c index a6d1c5bcd1a..c65ccb3fd76 100644 --- a/board/toradex/colibri_vf/colibri_vf.c +++ b/board/toradex/colibri_vf/colibri_vf.c @@ -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 |