diff options
| author | Jagan Teki <jagan@amarulasolutions.com> | 2018-05-07 10:33:37 +0300 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2018-05-28 14:10:43 +0300 |
| commit | aa29b11b3fdeaedb9689e89e467e6bbd036780ac (patch) | |
| tree | 7fa2303d653682ed99a61a6499812763832cfb7c /drivers/usb/musb-new/musb_uboot.c | |
| parent | 237050fc62c8313a50cd3618dbb21638a818f0bb (diff) | |
| download | u-boot-aa29b11b3fdeaedb9689e89e467e6bbd036780ac.tar.xz | |
phy: sun4i-usb: Add a sunxi specific function for setting squelch-detect
The sunxi otg phy has a bug where it wrongly detects a high speed squelch
when reset on the root port gets de-asserted with a lo-speed device.
The workaround for this is to disable squelch detect before de-asserting
reset, and re-enabling it after the reset de-assert is done. Add a sunxi
specific phy function to allow the sunxi-musb glue to do this.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Jun Nie <jun.nie@linaro.org>
Diffstat (limited to 'drivers/usb/musb-new/musb_uboot.c')
| -rw-r--r-- | drivers/usb/musb-new/musb_uboot.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/usb/musb-new/musb_uboot.c b/drivers/usb/musb-new/musb_uboot.c index 8662c0ff70..48242c0475 100644 --- a/drivers/usb/musb-new/musb_uboot.c +++ b/drivers/usb/musb-new/musb_uboot.c @@ -193,19 +193,16 @@ static int _musb_reset_root_port(struct musb_host_data *host, power &= 0xf0; musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power); mdelay(50); -#ifdef CONFIG_ARCH_SUNXI - /* - * sunxi phy has a bug and it will wrongly detect high speed squelch - * when clearing reset on low-speed devices, temporary disable - * squelch detection to work around this. - */ - sunxi_usb_phy_enable_squelch_detect(0, 0); -#endif + + if (host->host->ops->pre_root_reset_end) + host->host->ops->pre_root_reset_end(host->host); + power = musb_readb(mbase, MUSB_POWER); musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power); -#ifdef CONFIG_ARCH_SUNXI - sunxi_usb_phy_enable_squelch_detect(0, 1); -#endif + + if (host->host->ops->post_root_reset_end) + host->host->ops->post_root_reset_end(host->host); + host->host->isr(0, host->host); host->host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ? USB_SPEED_HIGH : |