From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: [PATCH 1/2] arm64: tegra: Add VDD_GPU regulator to Jetson TX1 Date: Fri, 2 Dec 2016 20:57:55 +0100 Message-ID: <20161202195756.16562-2-thierry.reding@gmail.com> References: <20161202195756.16562-1-thierry.reding@gmail.com> Return-path: In-Reply-To: <20161202195756.16562-1-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: Alexandre Courbot , linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-tegra@vger.kernel.org From: Alexandre Courbot 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 Signed-off-by: Thierry Reding --- arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi index 5fda583351d7..906fb836d241 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi @@ -21,6 +21,10 @@ reg = <0x0 0x80000000 0x1 0x0>; }; + gpu@57000000 { + vdd-supply = <&vdd_gpu>; + }; + /* debug port */ serial@70006000 { status = "okay"; @@ -291,4 +295,18 @@ clock-frequency = <32768>; }; }; + + 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>; + }; + }; }; -- 2.10.2