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| author | Alexandre Courbot <acourbot@nvidia.com> | 2016-12-02 22:57:55 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2016-12-08 02:23:33 +0300 |
| commit | 5e6b9a89afceadb1ee45472098f7d20af260335c (patch) | |
| tree | b50ab07b35d9fc97a1cdab7c437339a4d62c0b04 /arch/arm64/boot | |
| parent | 253e80651ed814cc2eab76280d5595c9d3a35aef (diff) | |
| download | linux-5e6b9a89afceadb1ee45472098f7d20af260335c.tar.xz | |
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: 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>
Diffstat (limited to 'arch/arm64/boot')
| -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>; + }; + }; }; |