Patch "arm64: tegra: Add VDD_GPU regulator to Jetson TX1" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

arm64: tegra: Add VDD_GPU regulator to Jetson TX1

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
arm64-tegra-add-vdd_gpu-regulator-to-jetson-tx1.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Alexandre Courbot <[email protected]>
Date: Fri, 2 Dec 2016 20:57:55 +0100
Subject: arm64: tegra: Add VDD_GPU regulator to Jetson TX1

From: Alexandre Courbot <[email protected]>

commit 5e6b9a89afceadb1ee45472098f7d20af260335c upstream.

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.

[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]

---
 arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

@@ -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>;
+		};
+	};
 };

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/arm64-tegra-add-vdd_gpu-regulator-to-jetson-tx1.patch