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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6eeb4180d4
Bananapi released an updated revision of the H3/H5 based Bananapi M2+. Version 1.2 enables voltage control for the CPU's regulator by using a GPIO line to toggle a MOSFET that can change the effective resistance value in the regulator's feedback network. This patch adds a common .dtsi file for this new revision, which includes the original common sunxi-bananapi-m2-plus.dtsi file, and adds the GPIO-controlled regulator and a cpu-supply reference. H3 and H5 variant dts files are added as well. Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
32 lines
724 B
Plaintext
32 lines
724 B
Plaintext
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (C) 2018 Chen-Yu Tsai <wens@csie.org>
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*/
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#include "sunxi-bananapi-m2-plus.dtsi"
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/ {
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/*
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* Bananapi M2+ v1.2 uses a GPIO line to change the effective
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* resistance on the CPU regulator's feedback pin.
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*/
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reg_vdd_cpux: vdd-cpux {
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compatible = "regulator-gpio";
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regulator-name = "vdd-cpux";
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regulator-type = "voltage";
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regulator-boot-on;
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regulator-always-on;
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regulator-min-microvolt = <1100000>;
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regulator-max-microvolt = <1300000>;
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regulator-ramp-delay = <50>; /* 4ms */
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gpios = <&r_pio 0 1 GPIO_ACTIVE_HIGH>; /* PL1 */
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gpios-states = <0x1>;
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states = <1100000 0x0
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1300000 0x1>;
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};
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};
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&cpu0 {
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cpu-supply = <®_vdd_cpux>;
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};
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