linux-kernel - [PATCH v4 3/7] arm64: dts: rockchip: Specify override mode for kevin panel

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Message-Id: <20190328171710.31949-4-dianders@chromium.org>
Date:   Thu, 28 Mar 2019 10:17:06 -0700
From:   Douglas Anderson <dianders@...omium.org>
To:     Thierry Reding <thierry.reding@...il.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Sean Paul <seanpaul@...omium.org>
Cc:     linux-rockchip@...ts.infradead.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        dri-devel@...ts.freedesktop.org,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Enric Balletbò <enric.balletbo@...labora.com>,
        Rob Herring <robh+dt@...nel.org>, mka@...omium.org,
        Doug Anderson <dianders@...omium.org>,
        Eric Anholt <eric@...olt.net>,
        Jeffy Chen <jeffy.chen@...k-chips.com>,
        Stéphane Marchesin <marcheu@...omium.org>,
        devicetree@...r.kernel.org,
        Brian Norris <briannorris@...omium.org>,
        Klaus Goger <klaus.goger@...obroma-systems.com>,
        linux-kernel@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v4 3/7] arm64: dts: rockchip: Specify override mode for kevin panel

From: Sean Paul <seanpaul@...omium.org>

This patch adds an override mode for kevin devices. The mode increases
both back porches to allow a pixel clock of 26666kHz as opposed to the
'typical' value of 252750kHz. This is needed to avoid interference with
the touch digitizer on these laptops.

Cc: Doug Anderson <dianders@...omium.org>
Cc: Eric Anholt <eric@...olt.net>
Cc: Heiko Stuebner <heiko@...ech.de>
Cc: Jeffy Chen <jeffy.chen@...k-chips.com>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Stéphane Marchesin <marcheu@...omium.org>
Cc: Thierry Reding <thierry.reding@...il.com>
Cc: devicetree@...r.kernel.org
Cc: dri-devel@...ts.freedesktop.org
Cc: linux-rockchip@...ts.infradead.org
Signed-off-by: Sean Paul <seanpaul@...omium.org>
Tested-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Signed-off-by: Douglas Anderson <dianders@...omium.org>
---

Changes in v4:
- Rebase to top of Heiko's tree
- Converted changelog to after-the-cut for non-DRM change.

Changes in v3:
- Unwrap the timing from display-timings and rename panel-timing (Rob)

Changes in v2:
- Wrap the timing in display-timings node to match binding (Rob/Thierry)

 arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
index 15e254a77391..454f4149585f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
@@ -43,6 +43,20 @@
 		backlight = <&backlight>;
 		power-supply = <&pp3300_disp>;
 
+		panel-timing {
+			clock-frequency = <266604720>;
+			hactive = <2400>;
+			hfront-porch = <48>;
+			hback-porch = <84>;
+			hsync-len = <32>;
+			hsync-active = <0>;
+			vactive = <1600>;
+			vfront-porch = <3>;
+			vback-porch = <120>;
+			vsync-len = <10>;
+			vsync-active = <0>;
+		};
+
 		port {
 			panel_in_edp: endpoint {
 				remote-endpoint = <&edp_out_panel>;
-- 
2.21.0.392.gf8f6787159e-goog