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Message-ID: <fbfd02d5-183a-118c-5743-dee6c9367bf6@linaro.org>
Date: Tue, 9 May 2023 11:18:27 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Jakob Hauser <jahau@...ketmail.com>,
Sebastian Reichel <sre@...nel.org>, Lee Jones <lee@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc: Beomho Seo <beomho.seo@...sung.com>,
Chanwoo Choi <cw00.choi@...sung.com>,
Stephan Gerhold <stephan@...hold.net>,
Raymond Hackley <raymondhackley@...tonmail.com>,
Pavel Machek <pavel@....cz>, Axel Lin <axel.lin@...ics.com>,
ChiYuan Huang <cy_huang@...htek.com>,
Linus Walleij <linus.walleij@...aro.org>,
Henrik Grimler <henrik@...mler.se>, linux-pm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v4 8/8] dt-bindings: Add rt5033 mfd, regulator and charger
On 06/05/2023 17:54, Jakob Hauser wrote:
> Add device tree binding documentation for rt5033 multifunction device, voltage
> regulator and battery charger.
>
> Cc: Beomho Seo <beomho.seo@...sung.com>
> Cc: Chanwoo Choi <cw00.choi@...sung.com>
> Signed-off-by: Jakob Hauser <jahau@...ketmail.com>
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> The patch is based on next-20230505.
>
> The drivers for rt5033 (mfd) and rt5033-regulator are existing. Whereas the
> the driver rt5033-charger is new in this patchset.
>
> .../bindings/mfd/richtek,rt5033.yaml | 113 ++++++++++++++++++
> .../power/supply/richtek,rt5033-charger.yaml | 64 ++++++++++
> 2 files changed, 177 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/richtek,rt5033.yaml
> create mode 100644 Documentation/devicetree/bindings/power/supply/richtek,rt5033-charger.yaml
>
> diff --git a/Documentation/devicetree/bindings/mfd/richtek,rt5033.yaml b/Documentation/devicetree/bindings/mfd/richtek,rt5033.yaml
> new file mode 100644
> index 000000000000..0aa0a556b50f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/richtek,rt5033.yaml
> @@ -0,0 +1,113 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/richtek,rt5033.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Richtek RT5033 Power Management Integrated Circuit
> +
> +maintainers:
> + - Jakob Hauser <jahau@...ketmail.com>
> +
> +description:
> + RT5033 is a multifunction device which includes battery charger, fuel gauge,
> + flash LED current source, LDO and synchronous Buck converter for portable
> + applications. It is interfaced to host controller using I2C interface. The
> + battery fuel gauge uses a separate I2C bus.
> +
> +properties:
> + compatible:
> + const: richtek,rt5033
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + regulators:
> + description:
> + The regulators of RT5033 have to be instantiated under a sub-node named
> + "regulators". For SAFE_LDO voltage there is only one value of 4.9 V. LDO
> + voltage ranges from 1.2 V to 3.0 V in 0.1 V steps. BUCK voltage ranges
> + from 1.0 V to 3.0 V in 0.1 V steps.
> + type: object
> + patternProperties:
> + "^(SAFE_LDO|LDO|BUCK)$":
> + type: object
> + $ref: /schemas/regulator/regulator.yaml#
> + unevaluatedProperties: false
> + additionalProperties: false
> +
> + charger:
> + type: object
> + $ref: /schemas/power/supply/richtek,rt5033-charger.yaml#
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> +
> + battery: battery {
> + compatible = "simple-battery";
> + precharge-current-microamp = <450000>;
> + constant-charge-current-max-microamp = <1000000>;
> + charge-term-current-microamp = <150000>;
> + precharge-upper-limit-microvolt = <3500000>;
> + constant-charge-voltage-max-microvolt = <4350000>;
> + };
> +
> + extcon {
> + usb_con: connector {
> + compatible = "usb-b-connector";
> + label = "micro-USB";
> + type = "micro";
> + };
> + };
> +
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + pmic@34 {
> + compatible = "richtek,rt5033";
> + reg = <0x34>;
> +
> + interrupt-parent = <&msmgpio>;
> + interrupts = <62 IRQ_TYPE_EDGE_FALLING>;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pmic_int_default>;
> +
> + regulators {
> + safe_ldo_reg: SAFE_LDO {
> + regulator-name = "SAFE_LDO";
> + regulator-min-microvolt = <4900000>;
> + regulator-max-microvolt = <4900000>;
> + regulator-always-on;
> + };
> + ldo_reg: LDO {
> + regulator-name = "LDO";
> + regulator-min-microvolt = <2800000>;
> + regulator-max-microvolt = <2800000>;
> + };
> + buck_reg: BUCK {
> + regulator-name = "BUCK";
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <1200000>;
> + };
> + };
> +
> + charger {
> + compatible = "richtek,rt5033-charger";
> + monitored-battery = <&battery>;
> + connector = <&usb_con>;
> + };
> + };
> + };
> diff --git a/Documentation/devicetree/bindings/power/supply/richtek,rt5033-charger.yaml b/Documentation/devicetree/bindings/power/supply/richtek,rt5033-charger.yaml
> new file mode 100644
> index 000000000000..b8607cc6ec63
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/supply/richtek,rt5033-charger.yaml
> @@ -0,0 +1,64 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/supply/richtek,rt5033-charger.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Richtek RT5033 PIMC Battery Charger
PMIC
> +
> +maintainers:
> + - Jakob Hauser <jahau@...ketmail.com>
> +
> +description:
> + The battery charger of the multifunction device RT5033 has to be instantiated
> + under sub-node named "charger" using the following format.
> +
> +properties:
> + compatible:
> + const: richtek,rt5033-charger
> +
> + monitored-battery:
> + description: |
> + Phandle to the monitored battery according to battery.yaml. The battery
> + node needs to contain five parameters.
> +
> + precharge-current-microamp:
> + Current of pre-charge mode. The pre-charge current levels are 350 mA
> + to 650 mA programmed by I2C per 100 mA.
> +
> + constant-charge-current-max-microamp:
> + Current of fast-charge mode. The fast-charge current levels are 700 mA
> + to 2000 mA programmed by I2C per 100 mA.
> +
> + charge-term-current-microamp:
> + This property is end of charge current. Its level ranges from 150 mA
> + to 600 mA. Between 150 mA and 300 mA in 50 mA steps, between 300 mA and
> + 600 mA in 100 mA steps.
> +
> + precharge-upper-limit-microvolt:
> + Voltage of pre-charge mode. If the battery voltage is below the pre-charge
> + threshold voltage, the charger is in pre-charge mode with pre-charge
> + current. Its levels are 2.3 V to 3.8 V programmed by I2C per 0.1 V.
> +
> + constant-charge-voltage-max-microvolt:
> + Battery regulation voltage of constant voltage mode. This voltage levels
> + from 3.65 V to 4.4 V by I2C per 0.025 V.
> +
> + connector:
> + description:
> + Phandle to a USB connector according to usb-connector.yaml. The connector
> + should be a child of the extcon device.
> + maxItems: 1
Missing type/ref... but then you will notice you have conflicting ref
with existing connector. connector is usb-connector.yaml, not phandle. I
am not sure if we need generic property, so let's go with device
specific - richtek,usb-connector
> +
> +required:
> + - monitored-battery
Best regards,
Krzysztof
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