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>
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@ -21,6 +21,10 @@
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reg = <0x0 0x80000000 0x1 0x0>;
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};
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gpu@57000000 {
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vdd-supply = <&vdd_gpu>;
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};
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/* debug port */
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serial@70006000 {
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status = "okay";
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@ -291,4 +295,18 @@
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clock-frequency = <32768>;
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};
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};
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regulators {
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vdd_gpu: regulator@100 {
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compatible = "pwm-regulator";
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reg = <100>;
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pwms = <&pwm 1 4880>;
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regulator-name = "VDD_GPU";
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regulator-min-microvolt = <710000>;
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regulator-max-microvolt = <1320000>;
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enable-gpios = <&pmic 6 GPIO_ACTIVE_HIGH>;
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regulator-ramp-delay = <80>;
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regulator-enable-ramp-delay = <1000>;
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};
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};
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};
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