[U-Boot] [PATCH v5] colibri_vf: Add board_usb_phy_mode function

[maitysanchayan at gmail.com <maitysanchayan@gmail.com>]

Hello Stefano,

Ping?

I just checked the master branch and this has not been picked up yet.

- Sanchayan.

On 15-11-24 11:37:59, Stefano Babic wrote:
> On 24/11/2015 11:23, maitysanchayan at gmail.com wrote:
> > Hello,
> > 
> > Ping?
> > 
> > Any further feedback? Is the patchset good to get accepted?
> 
> I'll pick it up
> 
> Best regards,
> Stefano Babic
> 
> > 
> > Thanks.
> > 
> > Regards,
> > Sanchayan.
> > 
> > On 15-11-12 11:47:35, Sanchayan Maity wrote:
> >> 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>
> >> ---
> >> Changes since v4:
> >> No need to break after return.
> >>
> >> Changes since v3:
> >> Return USB_INIT_DEVICE or USB_INIT_HOST after checking for
> >> the GPIO state to account for the fact that the previous
> >> logic breaks in case if the enum for USB mode were to ever
> >> be changed.
> >>
> >> Add comments based on Stefan's feedback.
> >>
> >> Changes since v2:
> >>
> >> Instead of returning 0 from board_usb_phy_mode return it as
> >> USB_INIT_HOST.
> >>
> >> Changes since v1:
> >>
> >> Move the GPIO request call to the board_init function as all
> >> further calls to board_usb_phy_mode will actually result in the
> >> gpio_request failing.
> >> ---
> >>  board/toradex/colibri_vf/colibri_vf.c | 33 ++++++++++++++++++++++++++++++++-
> >>  1 file changed, 32 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/board/toradex/colibri_vf/colibri_vf.c b/board/toradex/colibri_vf/colibri_vf.c
> >> index a6d1c5b..c65ccb3 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
> >> -- 
> >> 2.6.2
> >>
> 
> 
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