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fd17917951
The Richtek RT5190A is used on the MT7988 reference board. Backport and
enable the driver on the filogic subtarget, so we can support cpufreq
on the MT7988 reference board.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit a3cf3e2c48)
181 lines
5.5 KiB
Diff
181 lines
5.5 KiB
Diff
From b77e70f6b8f2cc62fba847f3008a430a09ef275d Mon Sep 17 00:00:00 2001
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From: ChiYuan Huang <cy_huang@richtek.com>
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Date: Wed, 9 Mar 2022 16:01:42 +0800
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Subject: [PATCH 1/2] regulator: Add bindings for Richtek RT5190A PMIC
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Add bindings for Richtek RT5190A PMIC.
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Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
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Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
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Link: https://lore.kernel.org/r/1646812903-32496-2-git-send-email-u0084500@gmail.com
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Signed-off-by: Mark Brown <broonie@kernel.org>
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---
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.../regulator/richtek,rt5190a-regulator.yaml | 141 ++++++++++++++++++
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.../regulator/richtek,rt5190a-regulator.h | 15 ++
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2 files changed, 156 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml
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create mode 100644 include/dt-bindings/regulator/richtek,rt5190a-regulator.h
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml
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@@ -0,0 +1,141 @@
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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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+%YAML 1.2
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+---
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+$id: http://devicetree.org/schemas/regulator/richtek,rt5190a-regulator.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: Richtek RT5190A PMIC Regulator
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+
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+maintainers:
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+ - ChiYuan Huang <cy_huang@richtek.com>
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+
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+description: |
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+ The RT5190A integrates 1 channel buck controller, 3 channels high efficiency
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+ synchronous buck converters, 1 LDO, I2C control interface and peripherial
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+ logical control.
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+
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+ It also supports mute AC OFF depop sound and quick setting storage while
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+ input power is removed.
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+
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+properties:
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+ compatible:
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+ enum:
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+ - richtek,rt5190a
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+
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+ reg:
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+ maxItems: 1
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+
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+ interrupts:
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+ maxItems: 1
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+
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+ vin2-supply:
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+ description: phandle to buck2 input voltage.
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+
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+ vin3-supply:
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+ description: phandle to buck3 input voltage.
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+
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+ vin4-supply:
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+ description: phandle to buck4 input voltage.
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+
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+ vinldo-supply:
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+ description: phandle to ldo input voltage
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+
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+ richtek,mute-enable:
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+ description: |
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+ The mute function uses 'mutein', 'muteout', and 'vdet' pins as the control
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+ signal. When enabled, The normal behavior is to bypass the 'mutein' signal
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+ 'muteout'. But if the power source removal is detected from 'vdet',
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+ whatever the 'mutein' signal is, it will pull down the 'muteout' to force
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+ speakers mute. this function is commonly used to prevent the speaker pop
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+ noise during AC power turned off in the modern TV system design.
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+ type: boolean
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+
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+ regulators:
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+ type: object
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+
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+ patternProperties:
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+ "^buck[1-4]$|^ldo$":
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+ type: object
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+ $ref: regulator.yaml#
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+ description: |
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+ regulator description for buck1 and buck4.
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+
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+ properties:
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+ regulator-allowed-modes:
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+ description: |
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+ buck operating mode, only buck1/4 support mode operating.
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+ 0: auto mode
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+ 1: force pwm mode
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+ items:
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+ enum: [0, 1]
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+
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+ richtek,latchup-enable:
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+ type: boolean
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+ description: |
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+ If specified, undervolt protection mode changes from the default
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+ hiccup to latchup.
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+
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+ unevaluatedProperties: false
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+
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+ additionalProperties: false
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+
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+required:
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+ - compatible
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+ - reg
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+ - regulators
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+
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+additionalProperties: false
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+
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+examples:
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+ - |
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+ #include <dt-bindings/interrupt-controller/irq.h>
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+ #include <dt-bindings/regulator/richtek,rt5190a-regulator.h>
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+
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+ i2c {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ pmic@64 {
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+ compatible = "richtek,rt5190a";
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+ reg = <0x64>;
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+ interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>;
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+ vin2-supply = <&rt5190_buck1>;
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+ vin3-supply = <&rt5190_buck1>;
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+ vin4-supply = <&rt5190_buck1>;
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+
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+ regulators {
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+ rt5190_buck1: buck1 {
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+ regulator-name = "rt5190a-buck1";
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+ regulator-min-microvolt = <5090000>;
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+ regulator-max-microvolt = <5090000>;
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+ regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
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+ regulator-boot-on;
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+ };
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+ buck2 {
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+ regulator-name = "rt5190a-buck2";
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+ regulator-min-microvolt = <600000>;
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+ regulator-max-microvolt = <1400000>;
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+ regulator-boot-on;
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+ };
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+ buck3 {
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+ regulator-name = "rt5190a-buck3";
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+ regulator-min-microvolt = <600000>;
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+ regulator-max-microvolt = <1400000>;
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+ regulator-boot-on;
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+ };
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+ buck4 {
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+ regulator-name = "rt5190a-buck4";
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+ regulator-min-microvolt = <850000>;
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+ regulator-max-microvolt = <850000>;
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+ regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
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+ regulator-boot-on;
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+ };
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+ ldo {
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+ regulator-name = "rt5190a-ldo";
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+ regulator-min-microvolt = <1200000>;
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+ regulator-max-microvolt = <1200000>;
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+ regulator-boot-on;
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+ };
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+ };
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+ };
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+ };
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--- /dev/null
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+++ b/include/dt-bindings/regulator/richtek,rt5190a-regulator.h
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@@ -0,0 +1,15 @@
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+/* SPDX-License-Identifier: GPL-2.0 */
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+
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+#ifndef __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
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+#define __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
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+
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+/*
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+ * BUCK/LDO mode constants which may be used in devicetree properties
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+ * (eg. regulator-allowed-modes).
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+ * See the manufacturer's datasheet for more information on these modes.
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+ */
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+
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+#define RT5190A_OPMODE_AUTO 0
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+#define RT5190A_OPMODE_FPWM 1
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+
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+#endif
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