From: Alexandru M Stan <amstan@chromium.org>
To: David Airlie <airlied@linux.ie>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Archit Taneja <architt@codeaurora.org>,
Andrzej Hajda <a.hajda@samsung.com>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
Sean Paul <seanpaul@chromium.org>
Cc: devicetree@vger.kernel.org,
Enric Balletbo i Serra <enric.balletbo@collabora.com>,
Heiko Stuebner <heiko@sntech.de>,
briannorris@chromium.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, dianders@chromium.org,
linux-rockchip@lists.infradead.org, marcheu@chromium.org,
hoegsberg@chromium.org,
Thierry Escande <thierry.escande@collabora.com>,
Jeffy Chen <jeffy.chen@rock-chips.com>,
Alexandru M Stan <amstan@chromium.org>
Subject: [PATCH 1/2] dt-bindings: analogix-dp: Add backlight-pwm-passthru
Date: Thu, 15 Mar 2018 19:56:58 -0700 [thread overview]
Message-ID: <20180316025659.217423-2-amstan@chromium.org> (raw)
In-Reply-To: <20180316025659.217423-1-amstan@chromium.org>
Documentation for the optional backlight-pwm-passthru property.
Tells the EDP panel to folow the input pwm frequency instead
of generating its own.
Signed-off-by: Alexandru M Stan <amstan@chromium.org>
---
Documentation/devicetree/bindings/display/bridge/analogix_dp.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt b/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
index 0c7473dd0e51..3c15242f6ce3 100644
--- a/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
+++ b/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
@@ -23,6 +23,10 @@ Required properties for dp-controller:
from general PHY binding: Should be "dp".
Optional properties for dp-controller:
+ -backlight-pwm-passthru:
+ Directly pass the PWM frequency applied to the BL_PWM_DIM
+ pin to the backlight current source. Done via
+ EDP_BACKLIGHT_MODE_SET_REGISTER on DPCD.
-force-hpd:
Indicate driver need force hpd when hpd detect failed, this
is used for some eDP screen which don't have hpd signal.
--
2.13.5
next prev parent reply other threads:[~2018-03-16 3:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-16 2:56 [PATCH 0/2] Add backlight-pwm-passthru in analogix DP driver Alexandru M Stan
2018-03-16 2:56 ` Alexandru M Stan [this message]
2018-03-16 9:26 ` [PATCH 1/2] dt-bindings: analogix-dp: Add backlight-pwm-passthru Archit Taneja
2018-03-18 12:52 ` Rob Herring
2018-03-20 14:07 ` Laurent Pinchart
2018-03-16 2:56 ` [PATCH 2/2] drm/bridge: analogix: Enable EDP_BACKLIGHT_FREQ_PWM_PIN_PASSTHRU Alexandru M Stan
2018-03-16 8:36 ` Daniel Vetter
2018-03-16 16:50 ` [PATCH 0/2] Add backlight-pwm-passthru in analogix DP driver Sean Paul
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