[PATCH 0/3] arm64: allwinner: a64: fix video output on Pinebook

[Vasily Khoruzhick]

Since commit ca1170b69968 ("clk: sunxi-ng: a64: force select PLL_MIPI in TCON0 mux"),
TCON0 clock parent is always set to PLL_MIPI, but unfortunately it breaks
video output on Pinebook.

I did an experiment: I manually configured PLL_MIPI and PLL_VIDEO0_2X
to the same clock rate and flipped the switch with devmem. Experiment clearly
showed that whenever PLL_MIPI is selected as TCON0 clock parent, the video
output stops working.

To fix the issue, I partially reverted mentioned commit and added explicit
TCON0 clock parent assignment to device tree. By default, it will be
PLL_MIPI, and the only users with RGB output - Pinebook and Teres-I will
override it in their dts.

Vasily Khoruzhick (3):
  dt-bindings: clock: sunxi: Export PLL_VIDEO_2X and PLL_MIPI
  arm64: dts: allwinner: a64: explicitly assign clock parent for TCON0
  clk: sunxi-ng: a64: stop force-selecting PLL-MIPI as TCON0 parent

 arch/arm64/boot/dts/allwinner/sun50i-a64-pinebook.dts |  2 ++
 arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts  |  2 ++
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi         |  2 ++
 drivers/clk/sunxi-ng/ccu-sun50i-a64.c                 | 11 -----------
 drivers/clk/sunxi-ng/ccu-sun50i-a64.h                 |  2 --
 include/dt-bindings/clock/sun50i-a64-ccu.h            |  2 ++
 6 files changed, 8 insertions(+), 13 deletions(-)

-- 
2.47.1