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DP firmware uses fixed phy config values to do training, but some boards need to adjust these values to fit for their unique hardware design. So get phy config values from dts and use software link training instead of relying on firmware, if software training fail, keep firmware training as a fallback if sw training fails. Signed-off-by: Chris Zhong <zyw@rock-chips.com> Signed-off-by: Lin Huang <hl@rock-chips.com> (am from https://patchwork.kernel.org/patch/10420469/) Conflicts: drivers/gpu/drm/rockchip/cdn-dp-reg.h [Context - non-upstream HDCP stuff] BUG=b:72006974 TEST=DP can display on Dru Signed-off-by: Brian Norris <briannorris@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/985573 Tested-by: Lin Huang <hl@rock-chips.com> Reviewed-by: Sean Paul <seanpaul@google.com> Change-Id: I402c5fd2c83979cee67856e66311d2b1b9c6f774 Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com> |
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