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:
336f79c7b6d7 ("arm64: tegra: Add NVIDIA Jetson TX1 Developer Kit support")
Cc: stable@vger.kernel.org #v4.5+
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
reg = <0x0 0x80000000 0x1 0x0>;
};
+ gpu@57000000 {
+ vdd-supply = <&vdd_gpu>;
+ };
+
/* debug port */
serial@70006000 {
status = "okay";
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>;
+ };
+ };
};