This patch series considers a port node outbound for panel device node, including dt binding for it. And also it fixes a wrong error type.
P.s., I already posted relevant patch series[1] before but missed dt binding. So please, ignore the patch series - I couldn't search the patch series on google.com so couldn't link it.
Thanks, Inki Dae
[1] [PATCH 0/2] drm/exynos: dp: add of_graph dt binding for panel device
Inki Dae (3): drm/exynos: dp: add of_graph dt binding support for panel drm/exynos: dp: fix wrong return type dt-bindings: exynos-dp: update ports node binding for panel
.../bindings/display/exynos/exynos_dp.txt | 28 ++++++++++++++++++---- drivers/gpu/drm/exynos/exynos_dp_core.c | 27 ++++++++++++++++++--- 2 files changed, 48 insertions(+), 7 deletions(-)