diff options
Diffstat (limited to 'drivers/usb/otg/ab8500-usb.c')
| -rw-r--r-- | drivers/usb/otg/ab8500-usb.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c index d6039ec20f3..2dbd3436dc4 100644 --- a/drivers/usb/otg/ab8500-usb.c +++ b/drivers/usb/otg/ab8500-usb.c @@ -55,6 +55,18 @@ #define AB8500_V20_31952_DISABLE_DELAY_US 100 /* usec */ #define AB8500_WD_V10_DISABLE_DELAY_MS 100 /* ms */ +/* Registers in bank 0x11 */ +#define AB8500_BANK12_ACCESS 0x00 + +/* Registers in bank 0x12 */ +#define AB8500_USB_PHY_TUNE1 0x05 +#define AB8500_USB_PHY_TUNE2 0x06 +#define AB8500_USB_PHY_TUNE3 0x07 + + + + + /* Usb line status register */ enum ab8500_usb_link_status { USB_LINK_NOT_CONFIGURED = 0, @@ -568,6 +580,7 @@ static int __devinit ab8500_usb_probe(struct platform_device *pdev) dev_get_platdata(pdev->dev.parent); int err; int rev; + int ret = -1; rev = abx500_get_chip_id(&pdev->dev); if (rev < 0) { @@ -625,6 +638,52 @@ static int __devinit ab8500_usb_probe(struct platform_device *pdev) goto fail3; } + /* Write Phy tuning values */ + if (ab->rev == 0x30) { + /* Enable the PBT/Bank 0x12 access */ + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, + AB8500_BANK12_ACCESS, + 0x01); + if (ret < 0) + printk(KERN_ERR "Failed to enable bank12" + " access ret=%d\n", ret); + + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, + AB8500_USB_PHY_TUNE1, + 0xC8); + if (ret < 0) + printk(KERN_ERR "Failed to set PHY_TUNE1" + " register ret=%d\n", ret); + + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, + AB8500_USB_PHY_TUNE2, + 0x00); + if (ret < 0) + printk(KERN_ERR "Failed to set PHY_TUNE2" + " register ret=%d\n", ret); + + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEBUG, + AB8500_USB_PHY_TUNE3, + 0x78); + + if (ret < 0) + printk(KERN_ERR "Failed to set PHY_TUNE3" + " regester ret=%d\n", ret); + + /* Switch to normal mode/disable Bank 0x12 access */ + ret = abx500_set_register_interruptible(ab->dev, + AB8500_DEVELOPMENT, + AB8500_BANK12_ACCESS, + 0x00); + + if (ret < 0) + printk(KERN_ERR "Failed to switch bank12" + " access ret=%d\n", ret); + } /* Needed to enable ID detection. */ ab8500_usb_wd_workaround(ab); |