[coreboot-gerrit] Patch merged into coreboot/master: gru: Tuning USB 2.0 PHY0 and PHY1 host-port

[gerrit at coreboot.org]

the following patch was just integrated into master:
commit 605a87c8eb8672375f2a58191fe7ba8ebc83c42a
Author: William wu <wulf at rock-chips.com>
Date:   Mon Jan 9 19:02:39 2017 +0800

    gru: Tuning USB 2.0 PHY0 and PHY1 host-port
    
    The commit 0ba3b2593b0c ("gru: Tuning USB 2.0 PHY to increase
    compatibility") bypass ODT to set the max driver strength for
    the Type-C otg-port, it works well on otg-port when connected
    with USB2.0 devices.
    
    Unfortunately, because the Type-C otg-port and host-port are
    consisted in one USB2 PHY, so bypass ODT will have an effect
    on both host-port and otg-port. I have tested the host-port
    eye-diagram, the result shows that if we bypass ODT, the host-
    port eye-diagram height will become to high, more than 500mv,
    this may cause USB 2.0 high-speed enumeration failure.
    
    This patch bypass ODT for host-port separately, and then we
    can reduce the host-port driver strength without affecting
    the otg-port driver strength.
    
    BRANCH=gru
    BUG=chrome-os-partner:60727
    TEST=Boot system, run 'lsusb' command and check if the usb camera
    and usb bluetooth are on usb 2.0 hub or usb 1.1 hub. If they are
    on usb 1.1 hub, the issue happens. If not, try to run camera app
    and then close camera app, repeat until find that the usb camera
    is on the usb 1.1 hub.
    
    Change-Id: Ib693e2a6f2113c06692a7bfee22d85b67ee3b165
    Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
    Original-Commit-Id: 5ea7660b7b05080b76fc5ca5af3fa18552a03491
    Original-Change-Id: Ia1f12182929673c5726df9f77f0903469b5c957a
    Original-Signed-off-by: William wu <wulf at rock-chips.com>
    Original-Reviewed-on: https://chromium-review.googlesource.com/425739
    Original-Commit-Ready: Douglas Anderson <dianders at chromium.org>
    Original-Tested-by: Douglas Anderson <dianders at chromium.org>
    Original-Tested-by: Inno Park <ih.yoo.park at samsung.com>
    Original-Reviewed-by: Douglas Anderson <dianders at chromium.org>
    Reviewed-on: https://review.coreboot.org/18126
    Tested-by: build bot (Jenkins)
    Reviewed-by: Martin Roth <martinroth at google.com>


See https://review.coreboot.org/18126 for details.

-gerrit