From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre Courbot Subject: [PATCH v2 2/2] arm64: tegra: Add VDD_GPU regulator to Jetson TX1 Date: Thu, 23 Jun 2016 16:39:45 +0900 Message-ID: <20160623073945.11642-2-acourbot@nvidia.com> References: <20160623073945.11642-1-acourbot@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20160623073945.11642-1-acourbot-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Liam Girdwood , Mark Brown , Rob Herring , Mark Rutland , Stephen Warren , Thierry Reding Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, gnurou-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, Alexandre Courbot List-Id: devicetree@vger.kernel.org Add the VDD_GPU regulator (a GPIO-enabled PWM regulator) to the Jetson TX1 board. This addition allows the GPU to be used provided the bootloader properly enabled the GPU node. Signed-off-by: Alexandre Courbot --- Changes since v1: - Include this patch into the series to make sure it is merged after 1/2, otherwise Jetson TX1 will lock when trying to enable the regulator. arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts b/arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts index 983775e637a4..cc9fb5207f9d 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts @@ -25,6 +25,10 @@ }; }; + gpu@57000000 { + vdd-supply = <&vdd_gpu>; + }; + i2c@7000c400 { backlight: backlight@2c { compatible = "ti,lp8557"; @@ -51,4 +55,18 @@ }; }; }; + + regulators { + vdd_gpu: regulator@100 { + compatible = "pwm-regulator"; + reg = <100>; + pwms = <&pwm 1 4880>; + regulator-name = "VDD_GPU"; + regulator-min-microvolt = <710000>; + regulator-max-microvolt = <1320000>; + enable-gpios = <&pmic 6 GPIO_ACTIVE_HIGH>; + regulator-ramp-delay = <80>; + regulator-enable-ramp-delay = <1000>; + }; + }; }; -- 2.8.3