From mboxrd@z Thu Jan 1 00:00:00 1970 From: heiko@sntech.de (Heiko Stuebner) Date: Fri, 18 Mar 2016 02:40:00 +0100 Subject: [PATCH 04/10] ARM: dts: rockchip: add startup delay to rk3288-veyron panel-regulators In-Reply-To: <1458265206-15733-1-git-send-email-heiko@sntech.de> References: <1458265206-15733-1-git-send-email-heiko@sntech.de> Message-ID: <1458265206-15733-5-git-send-email-heiko@sntech.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The panels need a bit of time to actually turn on. If this isn't observed, this results in problems when trying talk to the panels and thus produces detection errors. 100ms seem to be a safe value for the time being. Signed-off-by: Heiko Stuebner --- 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 insertions(+) diff --git a/arch/arm/boot/dts/rk3288-veyron-jaq.dts b/arch/arm/boot/dts/rk3288-veyron-jaq.dts index 5c97e31..2123ac2 100644 --- a/arch/arm/boot/dts/rk3288-veyron-jaq.dts +++ b/arch/arm/boot/dts/rk3288-veyron-jaq.dts @@ -61,6 +61,7 @@ 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 60bd6e9..1a9bef1 100644 --- a/arch/arm/boot/dts/rk3288-veyron-jerry.dts +++ b/arch/arm/boot/dts/rk3288-veyron-jerry.dts @@ -60,6 +60,7 @@ 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 699beb0..8b16f37 100644 --- a/arch/arm/boot/dts/rk3288-veyron-minnie.dts +++ b/arch/arm/boot/dts/rk3288-veyron-minnie.dts @@ -70,6 +70,7 @@ 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 b34a7b5..e62cdee 100644 --- a/arch/arm/boot/dts/rk3288-veyron-speedy.dts +++ b/arch/arm/boot/dts/rk3288-veyron-speedy.dts @@ -61,6 +61,7 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; + startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; }; -- 2.6.4