From: cy_huang <u0084500@gmail.com>
To: lee.jones@linaro.org, lgirdwood@gmail.com, broonie@kernel.org,
daniel.thompson@linaro.org, jingoohan1@gmail.com,
b.zolnierkie@samsung.com, pavel@ucw.cz, robh+dt@kernel.org
Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org,
devicetree@vger.kernel.org, cy_huang@richtek.com
Subject: [PATCH v7 3/4] mfd: rt4831: Adds DT binding document for Richtek RT4831
Date: Mon, 17 May 2021 22:36:00 +0800 [thread overview]
Message-ID: <1621262161-9972-3-git-send-email-u0084500@gmail.com> (raw)
In-Reply-To: <1621262161-9972-1-git-send-email-u0084500@gmail.com>
From: ChiYuan Huang <cy_huang@richtek.com>
Adds DT binding document for Richtek RT4831.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../devicetree/bindings/mfd/richtek,rt4831.yaml | 90 ++++++++++++++++++++++
1 file changed, 90 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml
diff --git a/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml
new file mode 100644
index 00000000..4762eb1
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml
@@ -0,0 +1,90 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/richtek,rt4831.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT4831 DSV and Backlight Integrated IC
+
+maintainers:
+ - ChiYuan Huang <cy_huang@richtek.com>
+
+description: |
+ RT4831 is a multifunctional device that can provide power to the LCD display
+ and LCD backlight.
+
+ For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V.
+ It's sufficient to meet the current LCD power requirement.
+
+ For the LCD backlight, it can provide four channel WLED driving capability.
+ Each channel driving current is up to 30mA
+
+ Datasheet is available at
+ https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
+
+properties:
+ compatible:
+ const: richtek,rt4831
+
+ reg:
+ description: I2C device address.
+ maxItems: 1
+
+ enable-gpios:
+ description: |
+ GPIO to enable/disable the chip. It is optional.
+ Some usage directly tied this pin to follow VIO 1.8V power on sequence.
+ maxItems: 1
+
+ regulators:
+ $ref: ../regulator/richtek,rt4831-regulator.yaml
+
+ backlight:
+ $ref: ../leds/backlight/richtek,rt4831-backlight.yaml
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/leds/rt4831-backlight.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rt4831@11 {
+ compatible = "richtek,rt4831";
+ reg = <0x11>;
+
+ regulators {
+ DSVLCM {
+ regulator-min-microvolt = <4000000>;
+ regulator-max-microvolt = <7150000>;
+ regulator-allow-bypass;
+ };
+ DSVP {
+ regulator-name = "rt4831-dsvp";
+ regulator-min-microvolt = <4000000>;
+ regulator-max-microvolt = <6500000>;
+ regulator-boot-on;
+ };
+ DSVN {
+ regulator-name = "rt4831-dsvn";
+ regulator-min-microvolt = <4000000>;
+ regulator-max-microvolt = <6500000>;
+ regulator-boot-on;
+ };
+ };
+
+ backlight {
+ compatible = "richtek,rt4831-backlight";
+ default-brightness = <1024>;
+ max-brightness = <2048>;
+ richtek,bled-ovp-sel = /bits/ 8 <RT4831_BLOVPLVL_21V>;
+ richtek,channel-use = /bits/ 8 <RT4831_BLED_ALLCHEN>;
+ };
+ };
+ };
--
2.7.4
next prev parent reply other threads:[~2021-05-17 15:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-17 14:35 [PATCH v7 1/4] mfd: rt4831: Adds support for Richtek RT4831 cy_huang
2021-05-17 14:35 ` [PATCH v7 2/4] backlight: rt4831: Adds DT binding document for Richtek RT4831 backlight cy_huang
2021-05-19 14:50 ` Lee Jones
2021-05-17 14:36 ` cy_huang [this message]
2021-05-19 14:50 ` [PATCH v7 3/4] mfd: rt4831: Adds DT binding document for Richtek RT4831 Lee Jones
2021-05-17 14:36 ` [PATCH v7 4/4] backlight: rt4831: Adds support for Richtek RT4831 backlight cy_huang
2021-05-19 14:51 ` Lee Jones
2021-05-19 14:50 ` [PATCH v7 1/4] mfd: rt4831: Adds support for Richtek RT4831 Lee Jones
-- strict thread matches above, loose matches on Subject: below --
2021-05-12 15:21 cy_huang
2021-05-12 15:21 ` [PATCH v7 3/4] mfd: rt4831: Adds DT binding document " cy_huang
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