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@xxxxxxxxxx>
---
Changes since v1:
- Include this patch into the series to make sure it is merged after 1/2,
otherwise Jetson TX1 will lock when trying to enable the regulator.
arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts b/arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts
index 983775e637a4..cc9fb5207f9d 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2371-2180.dts
@@ -25,6 +25,10 @@
};
};
+ gpu@57000000 {
+ vdd-supply = <&vdd_gpu>;
+ };
+
i2c@7000c400 {
backlight: backlight@2c {
compatible = "ti,lp8557";
@@ -51,4 +55,18 @@
};
};
};
+
+ 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>;
+ };
+ };
};
--
2.8.3
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