diff options
| author | Alexandre Courbot <acourbot@nvidia.com> | 2016-12-02 20:57:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-09 08:32:18 +0100 |
| commit | b6d666315b999df88a5fa5da65dda992dbe4556b (patch) | |
| tree | 518d26041aae59937f2c7d258c6f483c632df924 /arch | |
| parent | 5f654078b760104019e851247ae84d5498ff8a0e (diff) | |
arm64: tegra: Add VDD_GPU regulator to Jetson TX1
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.
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")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 18 |
1 files changed, 18 insertions, 0 deletions
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>; + }; + }; }; |