Commit 5e6b9a89 authored Dec 02, 2016 by Alexandre Courbot Committed by Arnd Bergmann Dec 08, 2016

arm64: tegra: Add VDD_GPU regulator to Jetson TX1



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 <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
[as pointed out by Thierry on IRC, nobody has reported a bug
 in the field, but using a new bootloader with a .dtb that
 has the incorrect data, it will crash on boot]
Fixes: 336f79c7 ("arm64: tegra: Add NVIDIA Jetson TX1 Developer Kit support")
Cc: stable@vger.kernel.org #v4.5+
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

parent 253e8065

arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi

+18 −0

Original line number	Diff line number	Diff line
		@@ -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>;
		};
		};
		};