EHCI probing in Rock pi 4 currently fails.
Add a clock driver for usb2phy so that probing EHCI does not fail when
missing one of the clocks in the bundle for usb_host0_ehci, since
usb2phy is UCLASS_PHY but not UCLASS_CLK.
Xavier Drudis Ferran (2):
phy: rockchip-inno-usb2: Add usb2phy clock provider of 480MHz clock
phy: rockchip-inno-usb2: Implement clock operations for usb2phy clock
drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 109 +++++++++++++++++-
1 file changed, 106 insertions(+), 3 deletions(-)
Cc: Simon Glass <s...@chromium.org>
Cc: Philipp Tomsich <philipp.toms...@vrull.eu>
Cc: Kever Yang <kever.y...@rock-chips.com>
Cc: Lukasz Majewski <lu...@denx.de>
Cc: Sean Anderson <sean...@gmail.com>
Cc: Marek Vasut <ma...@denx.de>
Cc: Christoph Fritz <chf.fr...@googlemail.com>
Cc: Jagan Teki <ja...@amarulasolutions.com>
Signed-off-by: Xavier Drudis Ferran <xdru...@tinet.cat>
---
Changes:
v7: Error handling. Remove unnecessary if.
Adding config data for rk3568 (untested).
v6: just retested over current next branch and some corrections
to message and headers
(no changes to code).
v5: fixes a bug that Christoph Fritz discovered, consisting in the
wrong eror code returned when enabling or disabling the clock
because property_enable() returns an error code in linux but
the modified register value in U-Boot. This caused the clk
disable to abort before freeing the clock.
v4: move v3 to one patch in the series and add a second patch
to add operations to enable disable the usb2phy 480Mhz clock.
Also, honour clock-output-names for what is worth.
v3: implement option 5 (bind usb2phy as a clk driver too) instead
of option 1 (ehci-generic.c tolerates missing clocks).
v2: implement option 1 (ehci-generic.c tolerates missing clocks)
instead of option 3 (change dts node to remove the missing
clock).
--
2.20.1
