arm64: dts: rockchip: introduce pclk_vio_grf in rk3399-eDP device node

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The pclk_vio_grf supply power for VIO GRF IOs, if it is disabled,
driver would failed to operate the VIO GRF registers.

The clock is optional but one of the side effects of don't have this clk
is that the Samsung Chromebook Plus fails to recover display after a
suspend/resume with following errors:

    rockchip-dp ff970000.edp: Input stream clock not detected.
    rockchip-dp ff970000.edp: Timeout of video streamclk ok
    rockchip-dp ff970000.edp: unable to config video

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
[this should also fix display failures when building rockchip-drm as module]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

...

This commit is contained in:

Yakir Yang 2018-02-07 17:31:48 +01:00 • committed by Heiko Stuebner

parent 2b7d2ed1af

commit 7b0390eabd

1 changed files with 2 additions and 2 deletions

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arch/arm64/boot/dts/rockchip/rk3399.dtsi

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