Add support for Richtek RT6190 36V 4-wwtich regulator

From: ChiYuan Huang <[email protected]>

The RT6190 is a 4-switch Buck-Boost controller designed for USB power delivery (USB PD). It operates with wide input voltage range from 4.5V to 36V, and the output voltage can be programmable between 3V and 36V. It implements peak current mode control mechanism to deliver up to 100W power with the programmable constant voltage and constant current output. It also has built-in charge pumps for driving external low-cost N-MOSFETs to control the power path.

Since v3:
- Fix the typo 'upply' to 'supply'.
- Declare 'enable-gpios' maxItems as 1.
- Declare the 'maxItems' for the property 'regulator-allowed-modes'.

Since v2:
- Rename binding filename to 'richtek,rt6190.yaml'

ChiYuan Huang (2):
dt-bindings: regulator: Add bindings for Richtek RT6190 regulator
regulator: rt6190: Add support for Richtek RT6190 regulator

 .../bindings/regulator/richtek,rt6190.yaml         |  79 ++++
 drivers/regulator/Kconfig                          |  11 +
 drivers/regulator/Makefile                         |   1 +
 drivers/regulator/rt6190-regulator.c               | 495 +++++++++++++++++++++
 4 files changed, 586 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt6190.yaml
 create mode 100644 drivers/regulator/rt6190-regulator.c

2.7.4

From: ChiYuan Huang <[email protected]>

Add devicetree binding for Richtek RT6190 4-Switch buckboost controller.

---
Hi, Rob:

Since I didn't got any reply from the v2 dt-binding question.
https://lore.kernel.org/lkml/CADiBU3_WUeyYdnmnG0Ff2pH+b3u1zOtP1z44LcA53Ba5c9nrEw@mail.gmail.com/
In v3, I aleady fixed it following by your comment.

I'm just wondering the corrent usage.
As I know, 'enable-gpios' comes from 'gpio-consumer-common.yaml'. In the common yaml file, it's already declared 'enable-gpios' maxItems as '1'. That's why I just declared it as 'true'.

Since v3:
- Fix the typo 'upply' to 'supply'.
- Declare 'enable-gpios' maxItems as 1.
- Declare the 'maxItems' for the property 'regulator-allowed-modes'.

Since v2:
- Rename binding filename to 'richtek,rt6190.yaml'

---
 .../bindings/regulator/richtek,rt6190.yaml         | 79 ++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt6190.yaml

new file mode 100644
index 00000000..29f7d3d
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/richtek,rt6190.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT6190 4-Switch BuckBoost controller
+
+maintainers:
+  - ChiYuan Huang <[email protected]>
+
+description: |
+  The RT6190 is 4-Switch BuckBoost controller designed for converting input
+  voltage to output voltage that can be equal to, higher or lower than input
+  voltage. It operates with wide input voltage range from 4.5V to 36V, and
+  the output voltage can be set from 3V to 36V by external FB pin. It's commonly
+  used for the application like as BuckBoost bus supply, docking station and USB
+  power delivery product.
+
+  Datasheet is available at
+  https://www.richtek.com/assets/product_file/RT6190/DS6190-02.pdf
+
+allOf:
+  - $ref: regulator.yaml#
+
+properties:
+  compatible:
+    enum:
+      - richtek,rt6190
+
+  reg:
+    maxItems: 1
+
+  enable-gpios:
+    maxItems: 1
+
+  wakeup-source: true
+
+  interrupts:
+    maxItems: 1
+
+  regulator-allowed-modes:
+    description: |
+      buck allowed operating mode
+        0: PSM mode (light load Power Saving Mode)
+        1: FCCM mode (Forced-CCM mode)
+    maxItems: 2
+    items:
+      enum: [0, 1]
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      regulator@2c {
+        compatible = "richtek,rt6190";
+        reg = <0x2c>;
+        wakeup-source;
+        interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>;
+        enable-gpios = <&gpio26 1 GPIO_ACTIVE_HIGH>;
+        regulator-name = "richtek,rt6190-buckboost";
+        regulator-min-microvolt = <3000000>;
+        regulator-max-microvolt = <32000000>;
+        regulator-min-microamp = <306000>;
+        regulator-max-microamp = <12114000>;
+        regulator-allowed-modes = <0 1>;
+      };
+    };

2.7.4

Yes, you are right. Either way is fine then.

From: ChiYuan Huang <[email protected]>

Add support for Richtek RT6190 4-Switch BuckBoost controller.

---
 drivers/regulator/Kconfig            |  11 +
 drivers/regulator/Makefile           |   1 +
 drivers/regulator/rt6190-regulator.c | 495 +++++++++++++++++++++++++++++++++++
 3 files changed, 507 insertions(+)
 create mode 100644 drivers/regulator/rt6190-regulator.c

index 070e440..4e4614d 100644
@@ -1124,6 +1124,17 @@ config REGULATOR_RT6160
 	  The wide output range is from 2025mV to 5200mV and can be used on most
 	  common application scenario.
 
+config REGULATOR_RT6190
+	tristate "Richtek RT6190 4-Switch BuckBoost controller"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  The RT6190 is a 4-Switch BuckBoost controller designed for converting
+	  input voltage to output voltage that can be equal to, higher or lower
+	  than input voltage. It operates with wide input voltage range from
+	  4.5V to 36V, and the output voltage can be set from 3V to 36V by
+	  external FB pin.
+
 config REGULATOR_RT6245
 	tristate "Richtek RT6245 voltage regulator"
 	depends on I2C

index 5962307..c3b5cf6 100644
@@ -134,6 +134,7 @@ obj-$(CONFIG_REGULATOR_RT5120)	+= rt5120-regulator.o
 obj-$(CONFIG_REGULATOR_RT5190A) += rt5190a-regulator.o
 obj-$(CONFIG_REGULATOR_RT5759)	+= rt5759-regulator.o
 obj-$(CONFIG_REGULATOR_RT6160)	+= rt6160-regulator.o
+obj-$(CONFIG_REGULATOR_RT6190)	+= rt6190-regulator.o
 obj-$(CONFIG_REGULATOR_RT6245)	+= rt6245-regulator.o
 obj-$(CONFIG_REGULATOR_RTMV20)	+= rtmv20-regulator.o
 obj-$(CONFIG_REGULATOR_RTQ2134) += rtq2134-regulator.o

2.7.4

Applied to

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/2] dt-bindings: regulator: Add bindings for Richtek RT6190 regulator

      commit: 8facce4349d46fbc2ac4f6da3786130ddd104440
[2/2] regulator: rt6190: Add support for Richtek RT6190 regulator
      commit: e6999e7cca7eecd64c27dc72c51d11cb33079a0c

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks,
Mark