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Message-ID: <1689758686-14409-2-git-send-email-alina_yu@richtek.com>
Date: Wed, 19 Jul 2023 17:24:45 +0800
From: <alina_yu@...htek.com>
To: <lgirdwood@...il.com>, <broonie@...nel.org>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<alina_yu@...htek.com>
Subject: [PATCH v4 1/2] regulator: dt-bindings: rtq2208: Add Richtek RTQ2208 SubPMIC
From: alinayu <alina_yu@...htek.com>
Add bindings for Richtek RTQ2208 IC controlled SubPMIC
Signed-off-by: Alina Yu <alina_yu@...htek.com>
---
v4
- Modify filename to "richtek,rtq2208"
- Add more desciptions for "regulator-allowed-modes"
---
.../bindings/regulator/richtek,rtq2208.yaml | 208 +++++++++++++++++++++
1 file changed, 208 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
new file mode 100644
index 0000000..6cc441f
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
@@ -0,0 +1,208 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/richtek,rtq2208-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RTQ2208 SubPMIC Regulator
+
+maintainers:
+ - Alina Yu <alina_yu@...htek.com>
+
+description: |
+ RTQ2208 is a highly integrated power converter that offers functional safety dual
+ multi-configurable synchronous buck converters and two LDOs.
+
+ Bucks support "regulator-allowed-modes" and "regulator-mode". The former defines the permitted
+ switching operation in normal mode; the latter defines the operation in suspend to RAM mode.
+
+ No matter the RTQ2208 is configured to normal or suspend to RAM mode, there are two switching
+ operation modes for all buck rails, automatic power saving mode (Auto mode) and forced continuous
+ conduction mode (FCCM).
+
+ The definition of modes is in the datasheet which is available in below link
+ and their meaning is::
+ 0 - Auto mode for power saving, which reducing the switching frequency at light load condition
+ to maintain high frequency.
+ 1 - FCCM to meet the strict voltage regulation accuracy, which keeping constant switching frequency.
+
+ Datasheet will be available soon at
+ https://www.richtek.com/assets/Products
+
+properties:
+ compatible:
+ enum:
+ - richtek,rtq2208
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ richtek,mtp-sel:
+ type: boolean
+ description:
+ vout register selection based on this boolean value.
+ false - Using DVS0 register setting to adjust vout
+ true - Using DVS1 register setting to adjust vout
+
+ regulators:
+ type: object
+
+ patternProperties:
+ "^buck-[a-h]$":
+ type: object
+ $ref: regulator.yaml#
+ unevaluatedProperties: false
+ description:
+ description for buck-[a-h] regulator.
+
+ properties:
+ regulator-allowed-modes:
+ description:
+ two buck modes in different switching accuracy.
+ 0 - Auto mode
+ 1 - FCCM
+ items:
+ enum: [0, 1]
+
+ regulator-mode:
+ enum: [0, 1]
+ description:
+ describe buck initial operating mode in suspend state.
+
+ "^ldo[1-2]$":
+ type: object
+ $ref: regulator.yaml#
+ description:
+ regulator description for ldo[1-2].
+
+ properties:
+ regulator-compatible:
+ pattern: "^LDO[1-2]$"
+
+ richtek,fixed-uV:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ enum: [ 900000, 1200000, 1800000, 3300000 ]
+ description:
+ the fixed voltage in micro volt which is decided at the factory.
+
+required:
+ - compatible
+ - reg
+ - regulators
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pmic@10 {
+ compatible = "richtek,rtq2208";
+ reg = <0x10>;
+ interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>;
+ richtek,mtp-sel;
+
+ regulators {
+ buck-a {
+ regulator-min-microvolt = <400000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-allowed-modes = <0 1>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <1>;
+ };
+ };
+ buck-b {
+ regulator-min-microvolt = <400000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-allowed-modes = <0 1>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <1>;
+ };
+ };
+ buck-c {
+ regulator-min-microvolt = <400000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-allowed-modes = <0 1>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <1>;
+ };
+ };
+ buck-d {
+ regulator-min-microvolt = <400000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-allowed-modes = <0 1>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <1>;
+ };
+ };
+ buck-e {
+ regulator-min-microvolt = <400000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-allowed-modes = <0 1>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <1>;
+ };
+ };
+ buck-f {
+ regulator-min-microvolt = <400000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-allowed-modes = <0 1>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <1>;
+ };
+ };
+ buck-g {
+ regulator-min-microvolt = <400000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-allowed-modes = <0 1>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <1>;
+ };
+ };
+ buck-h {
+ regulator-min-microvolt = <400000>;
+ regulator-max-microvolt = <2050000>;
+ regulator-allowed-modes = <0 1>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ regulator-mode = <1>;
+ };
+ };
+ ldo1 {
+ richtek,fixed-uV = <1200000>;
+ regulator-always-on;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
+ };
+ ldo2 {
+ regulator-always-on;
+ richtek,fixed-uV = <3300000>;
+ regulator-state-mem {
+ regulator-on-in-suspend;
+ };
+ };
+ };
+ };
+ };
--
2.7.4
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