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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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6d8d1124d7
The USB PHY in the Allwinner R40 SoC seems to rely on voltage on the VCC-TVIN/OUT supply pins for proper operation, on top of its own supply voltage on VCC-USB. Without a 3.3V voltage supplied to VCC-TV*, USB operation becomes unstable and can result in disconnects. The Forlinx FETA40i-C SoM connects both the VCC-TVOUT and VCC-TVIN pins to the ALDO1 rail of the PMIC, so we need to enable that rail for USB operation. Since there is no supply property in the DT bindings for the USB core, we need to always enable the regulator. This fixes unstable USB operation on boards using the Forlinx FETA40i-C module. Signed-off-by: Fuyao Kashizuku <fuyao@sjterm.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com> Link: https://lore.kernel.org/r/ZYqRZev1g_mztff2@debian.cyg Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
119 lines
2.4 KiB
Plaintext
119 lines
2.4 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0+ OR MIT
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// Copyright (C) 2021 Ivan Uvarov <i.uvarov@cognitivepilot.com>
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// Based on the sun8i-r40-bananapi-m2-ultra.dts, which is:
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// Copyright (C) 2017 Chen-Yu Tsai <wens@csie.org>
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// Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
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#include "sun8i-r40.dtsi"
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#include "sun8i-r40-cpu-opp.dtsi"
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&cpu0 {
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cpu-supply = <®_dcdc2>;
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};
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&i2c0 {
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status = "okay";
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axp22x: pmic@34 {
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compatible = "x-powers,axp221";
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reg = <0x34>;
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interrupt-parent = <&nmi_intc>;
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interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
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};
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};
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#include "axp22x.dtsi"
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&mmc2 {
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vmmc-supply = <®_dcdc1>;
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vqmmc-supply = <®_aldo2>;
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bus-width = <8>;
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non-removable;
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status = "okay";
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};
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&pio {
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pinctrl-names = "default";
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pinctrl-0 = <&clk_out_a_pin>;
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vcc-pa-supply = <®_dcdc1>;
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vcc-pc-supply = <®_aldo2>;
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vcc-pd-supply = <®_dcdc1>;
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vcc-pf-supply = <®_dldo4>;
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vcc-pg-supply = <®_dldo1>;
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};
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®_aldo1 {
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regulator-always-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc-3v3-tv-usb";
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};
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®_aldo2 {
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regulator-always-on;
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-name = "vcc-pa";
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};
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®_aldo3 {
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regulator-always-on;
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regulator-min-microvolt = <3000000>;
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regulator-max-microvolt = <3000000>;
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regulator-name = "avcc";
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};
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®_dcdc1 {
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regulator-always-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc-3v3";
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};
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®_dcdc2 {
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regulator-always-on;
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regulator-min-microvolt = <1100000>;
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regulator-max-microvolt = <1100000>;
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regulator-name = "vdd-cpu";
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};
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®_dcdc3 {
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regulator-always-on;
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regulator-min-microvolt = <1100000>;
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regulator-max-microvolt = <1100000>;
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regulator-name = "vdd-sys";
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};
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®_dcdc5 {
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regulator-always-on;
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regulator-min-microvolt = <1500000>;
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regulator-max-microvolt = <1500000>;
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regulator-name = "vcc-dram";
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};
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®_dldo1 {
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regulator-always-on;
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-name = "vcc-wifi-io";
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};
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®_dldo4 {
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regulator-always-on;
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regulator-min-microvolt = <2500000>;
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regulator-max-microvolt = <2500000>;
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regulator-name = "vdd2v5-sata";
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};
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®_eldo2 {
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <1200000>;
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regulator-name = "vdd1v2-sata";
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};
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®_eldo3 {
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regulator-min-microvolt = <2800000>;
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regulator-max-microvolt = <2800000>;
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regulator-name = "vcc-pe";
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};
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