| .. | .. |
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| 1 | +// SPDX-License-Identifier: GPL-2.0-only |
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| 1 | 2 | /* |
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| 2 | 3 | * Device tree for LEGO MINDSTORMS EV3 |
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| 3 | 4 | * |
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| 4 | 5 | * Copyright (C) 2017 David Lechner <david@lechnology.com> |
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| 5 | | - * |
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| 6 | | - * This program is free software; you can redistribute it and/or modify it |
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| 7 | | - * under the terms of the GNU General Public License as published by the |
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| 8 | | - * Free Software Foundation, version 2. |
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| 9 | 6 | */ |
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| 10 | 7 | |
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| 11 | 8 | /dts-v1/; |
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| .. | .. |
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| 125 | 122 | amp-supply = <&>; |
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| 126 | 123 | }; |
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| 127 | 124 | |
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| 125 | + cvdd: regulator0 { |
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| 126 | + compatible = "regulator-fixed"; |
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| 127 | + regulator-name = "cvdd"; |
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| 128 | + regulator-min-microvolt = <1200000>; |
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| 129 | + regulator-max-microvolt = <1200000>; |
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| 130 | + regulator-always-on; |
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| 131 | + regulator-boot-on; |
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| 132 | + }; |
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| 133 | + |
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| 128 | 134 | /* |
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| 129 | 135 | * This is a 5V current limiting regulator that is shared by USB, |
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| 130 | 136 | * the sensor (input) ports, the motor (output) ports and the A/DC. |
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| .. | .. |
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| 202 | 208 | |
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| 203 | 209 | &ref_clk { |
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| 204 | 210 | clock-frequency = <24000000>; |
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| 211 | +}; |
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| 212 | + |
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| 213 | +&cpu { |
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| 214 | + cpu-supply = <&cvdd>; |
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| 215 | +}; |
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| 216 | + |
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| 217 | +/* since we have a fixed regulator, we can't run at these points */ |
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| 218 | +&opp_100 { |
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| 219 | + status = "disabled"; |
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| 220 | +}; |
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| 221 | + |
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| 222 | +&opp_200 { |
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| 223 | + status = "disabled"; |
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| 224 | +}; |
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| 225 | + |
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| 226 | +/* |
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| 227 | + * The SoC is actually the 456MHz version, but because of the fixed regulator |
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| 228 | + * This is the fastest we can go. |
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| 229 | + */ |
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| 230 | +&opp_375 { |
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| 231 | + status = "okay"; |
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| 205 | 232 | }; |
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| 206 | 233 | |
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| 207 | 234 | &pmx_core { |
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| .. | .. |
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| 352 | 379 | compatible = "ti,ads7957"; |
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| 353 | 380 | reg = <3>; |
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| 354 | 381 | #io-channel-cells = <1>; |
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| 355 | | - spi-max-frequency = <10000000>; |
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| 382 | + spi-max-frequency = <1000000>; |
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| 383 | + ti,spi-wdelay = <63>; |
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| 356 | 384 | vref-supply = <&adc_ref>; |
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| 357 | 385 | }; |
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| 358 | 386 | }; |
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