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Thu, 20 Jun 2019 11:21:17 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id 188sm178081pfe.30.2019.06.20.11.21.16 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 20 Jun 2019 11:21:17 -0700 (PDT) From: Douglas Anderson To: heiko@sntech.de Subject: [PATCH] Revert "ARM: dts: rockchip: add startup delay to rk3288-veyron panel-regulators" Date: Thu, 20 Jun 2019 11:20:56 -0700 Message-Id: <20190620182056.61552-1-dianders@chromium.org> X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190620_112118_508371_622CA53E X-CRM114-Status: GOOD ( 10.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Douglas Anderson , Rob Herring , linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, mka@chromium.org, enric.balletbo@collabora.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This reverts commit 1f45e8c6d0161f044d679f242fe7514e2625af4a. This 100 ms mystery delay is not on downstream kernels and no longer seems needed on upstream kernels either [1]. Presumably something in the meantime has made things better. A few possibilities for patches that have landed in the meantime that could have made this better are commit 3157694d8c7f ("pwm-backlight: Add support for PWM delays proprieties."), commit 5fb5caee92ba ("pwm-backlight: Enable/disable the PWM before/after LCD enable toggle."), and commit 6d5922dd0d60 ("ARM: dts: rockchip: set PWM delay backlight settings for Veyron") Let's revert and get our 100 ms back. [1] https://lkml.kernel.org/r/2226970.BAPq4liE1j@diego Signed-off-by: Douglas Anderson --- arch/arm/boot/dts/rk3288-veyron-jaq.dts | 1 - arch/arm/boot/dts/rk3288-veyron-jerry.dts | 1 - arch/arm/boot/dts/rk3288-veyron-minnie.dts | 1 - arch/arm/boot/dts/rk3288-veyron-speedy.dts | 1 - 4 files changed, 4 deletions(-) diff --git a/arch/arm/boot/dts/rk3288-veyron-jaq.dts b/arch/arm/boot/dts/rk3288-veyron-jaq.dts index fcd119168cb6..5411ce148890 100644 --- a/arch/arm/boot/dts/rk3288-veyron-jaq.dts +++ b/arch/arm/boot/dts/rk3288-veyron-jaq.dts @@ -24,7 +24,6 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; - startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; }; diff --git a/arch/arm/boot/dts/rk3288-veyron-jerry.dts b/arch/arm/boot/dts/rk3288-veyron-jerry.dts index 164561f04c1d..82ac9d23480e 100644 --- a/arch/arm/boot/dts/rk3288-veyron-jerry.dts +++ b/arch/arm/boot/dts/rk3288-veyron-jerry.dts @@ -26,7 +26,6 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; - startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; }; diff --git a/arch/arm/boot/dts/rk3288-veyron-minnie.dts b/arch/arm/boot/dts/rk3288-veyron-minnie.dts index b2cc70a08554..f29501d8ff07 100644 --- a/arch/arm/boot/dts/rk3288-veyron-minnie.dts +++ b/arch/arm/boot/dts/rk3288-veyron-minnie.dts @@ -33,7 +33,6 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; - startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; }; diff --git a/arch/arm/boot/dts/rk3288-veyron-speedy.dts b/arch/arm/boot/dts/rk3288-veyron-speedy.dts index 9b140db04456..a0f6fefc95f1 100644 --- a/arch/arm/boot/dts/rk3288-veyron-speedy.dts +++ b/arch/arm/boot/dts/rk3288-veyron-speedy.dts @@ -24,7 +24,6 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; - startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; };