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/rk3399_rockchip-uboot/drivers/video/drm/
H A Danalogix_dp.hdddde95be472ff27022fdd353f5019e62caafc92 Wed Jan 30 10:38:07 UTC 2019 Wyon Bi <bivvy.bi@rock-chips.com> video/drm: analogix_dp: add edp reset control support

This patch adds eDP software reset operation to make sure
register access successfully on RK3288 and it fixes possible
register default value abnormal issue during boot up.

1) normal case:
Rockchip UBOOT DRM driver version: v1.0.1
0x120: 0x00000007
0x390: 0x00000003
Using display timing dts
Detailed mode clock 200000 kHz, flags[a]
H: 1536 1548 1564 1612
V: 2048 2056 2060 2068
bus_format: 100e
Link Training success!
final link rate = 0x06, lane count = 0x04

2) abnormal case:
Rockchip UBOOT DRM driver version: v1.0.1
0x120: 0x00000066
0x390: 0x00000202
Using display timing dts
Detailed mode clock 200000 kHz, flags[a]
H: 1536 1548 1564 1612
V: 2048 2056 2060 2068
bus_format: 100e
failed to get Rx Max Link Rate
failed to init training
unable to do link train

Change-Id: Idacbb0c72a40442da3a87e60bfe1d9965f3ca79c
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
H A Danalogix_dp.cdddde95be472ff27022fdd353f5019e62caafc92 Wed Jan 30 10:38:07 UTC 2019 Wyon Bi <bivvy.bi@rock-chips.com> video/drm: analogix_dp: add edp reset control support

This patch adds eDP software reset operation to make sure
register access successfully on RK3288 and it fixes possible
register default value abnormal issue during boot up.

1) normal case:
Rockchip UBOOT DRM driver version: v1.0.1
0x120: 0x00000007
0x390: 0x00000003
Using display timing dts
Detailed mode clock 200000 kHz, flags[a]
H: 1536 1548 1564 1612
V: 2048 2056 2060 2068
bus_format: 100e
Link Training success!
final link rate = 0x06, lane count = 0x04

2) abnormal case:
Rockchip UBOOT DRM driver version: v1.0.1
0x120: 0x00000066
0x390: 0x00000202
Using display timing dts
Detailed mode clock 200000 kHz, flags[a]
H: 1536 1548 1564 1612
V: 2048 2056 2060 2068
bus_format: 100e
failed to get Rx Max Link Rate
failed to init training
unable to do link train

Change-Id: Idacbb0c72a40442da3a87e60bfe1d9965f3ca79c
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>