From: ChiaEn Wu <peterwu.pub@gmail.com>
To: lee.jones@linaro.org, daniel.thompson@linaro.org,
jingoohan1@gmail.com, pavel@ucw.cz, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, matthias.bgg@gmail.com,
sre@kernel.org, chunfeng.yun@mediatek.com,
gregkh@linuxfoundation.org, jic23@kernel.org, lars@metafoo.de,
lgirdwood@gmail.com, broonie@kernel.org, linux@roeck-us.net,
heikki.krogerus@linux.intel.com, deller@gmx.de
Cc: chiaen_wu@richtek.com, alice_chen@richtek.com,
cy_huang@richtek.com, dri-devel@lists.freedesktop.org,
linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org, linux-usb@vger.kernel.org,
linux-iio@vger.kernel.org, linux-fbdev@vger.kernel.org,
szunichen@gmail.com
Subject: [PATCH v3 05/14] dt-bindings: backlight: Add Mediatek MT6370 backlight
Date: Thu, 23 Jun 2022 19:56:22 +0800 [thread overview]
Message-ID: <20220623115631.22209-6-peterwu.pub@gmail.com> (raw)
In-Reply-To: <20220623115631.22209-1-peterwu.pub@gmail.com>
From: ChiYuan Huang <cy_huang@richtek.com>
Add mt6370 backlight binding documentation.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
---
v3
- Rename "mediatek,bled-pwm-hys-input-threshold-steps" to
"mediatek,bled-pwm-hys-input-th-steps"
- Refine "bled-pwm-hys-input-th-steps", "bled-ovp-microvolt",
"bled-ocp-microamp" enum values
---
.../leds/backlight/mediatek,mt6370-backlight.yaml | 92 ++++++++++++++++++++++
1 file changed, 92 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml
diff --git a/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml
new file mode 100644
index 0000000..26563ae
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/mediatek,mt6370-backlight.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek MT6370 Backlight
+
+maintainers:
+ - ChiaEn Wu <chiaen_wu@richtek.com>
+
+description: |
+ This module is part of the MT6370 MFD device.
+ The MT6370 Backlight WLED driver supports up to a 29V output voltage for
+ 4 channels of 8 series WLEDs. Each channel supports up to 30mA of current
+ capability with 2048 current steps (11 bits) in exponential or linear
+ mapping curves.
+
+allOf:
+ - $ref: common.yaml#
+
+properties:
+ compatible:
+ const: mediatek,mt6370-backlight
+
+ default-brightness:
+ minimum: 0
+ maximum: 2048
+
+ max-brightness:
+ minimum: 0
+ maximum: 2048
+
+ enable-gpios:
+ description: External backlight 'enable' pin
+ maxItems: 1
+
+ mediatek,bled-pwm-enable:
+ description: |
+ Enable external PWM input for backlight dimming
+ type: boolean
+
+ mediatek,bled-pwm-hys-enable:
+ description: |
+ Enable the backlight input-hysteresis for PWM mode
+ type: boolean
+
+ mediatek,bled-pwm-hys-input-th-steps:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ enum: [1, 4, 16, 64]
+ description: |
+ The selection of the upper and lower bounds threshold of backlight
+ PWM resolution. If we choose selection 64, the variation of PWM
+ resolution needs over than 64 steps.
+
+ mediatek,bled-ovp-shutdown:
+ description: |
+ Enable the backlight shutdown when OVP level triggered
+ type: boolean
+
+ mediatek,bled-ovp-microvolt:
+ enum: [17000000, 21000000, 25000000, 29000000]
+ description: |
+ Backlight OVP level selection.
+
+ mediatek,bled-ocp-shutdown:
+ description: |
+ Enable the backlight shutdown when OCP level triggerred.
+ type: boolean
+
+ mediatek,bled-ocp-microamp:
+ enum: [900000, 1200000, 1500000, 1800000]
+ description: |
+ Backlight OC level selection.
+
+ mediatek,bled-channel-use:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: |
+ Backlight LED channel to be used.
+ Each bit mapping to:
+ - 0: CH4
+ - 1: CH3
+ - 2: CH2
+ - 3: CH1
+ minimum: 1
+ maximum: 15
+
+required:
+ - compatible
+ - mediatek,bled-channel-use
+
+additionalProperties: false
--
2.7.4
next prev parent reply other threads:[~2022-06-23 11:58 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-23 11:56 [PATCH v3 00/14] Add Mediatek MT6370 PMIC support ChiaEn Wu
2022-06-23 11:56 ` [PATCH v3 01/14] dt-bindings: usb: Add Mediatek MT6370 TCPC ChiaEn Wu
2022-06-23 11:56 ` [PATCH v3 02/14] dt-bindings: power: supply: Add Mediatek MT6370 Charger ChiaEn Wu
2022-06-24 10:27 ` Krzysztof Kozlowski
2022-06-25 0:54 ` Miles Chen
2022-06-23 11:56 ` [PATCH v3 03/14] dt-bindings: leds: mt6370: Add Mediatek mt6370 current sink type LED indicator ChiaEn Wu
2022-06-24 10:35 ` Krzysztof Kozlowski
2022-06-24 10:45 ` Krzysztof Kozlowski
2022-06-23 11:56 ` [PATCH v3 04/14] dt-bindings: leds: Add Mediatek MT6370 flashlight ChiaEn Wu
2022-06-24 11:22 ` Krzysztof Kozlowski
2022-06-23 11:56 ` ChiaEn Wu [this message]
2022-06-23 13:16 ` [PATCH v3 05/14] dt-bindings: backlight: Add Mediatek MT6370 backlight Joe Simmons-Talbott
2022-06-24 9:34 ` ChiaEn Wu
2022-06-30 21:55 ` Rob Herring
2022-06-23 11:56 ` [PATCH v3 06/14] dt-bindings: mfd: Add Mediatek MT6370 ChiaEn Wu
2022-06-24 11:39 ` Krzysztof Kozlowski
2022-06-23 11:56 ` [PATCH v3 07/14] mfd: mt6370: Add Mediatek MT6370 support ChiaEn Wu
2022-06-23 18:00 ` Andy Shevchenko
2022-06-24 10:19 ` ChiaEn Wu
2022-06-28 11:52 ` Andy Shevchenko
2022-07-12 15:29 ` Lee Jones
2022-07-13 2:29 ` ChiaEn Wu
2022-07-13 8:04 ` Lee Jones
2022-07-13 9:31 ` ChiaEn Wu
2022-06-23 11:56 ` [PATCH v3 08/14] usb: typec: tcpci_mt6370: Add Mediatek MT6370 tcpci driver ChiaEn Wu
2022-06-23 18:07 ` Andy Shevchenko
2022-06-24 11:33 ` Greg KH
2022-06-23 11:56 ` [PATCH v3 09/14] regulator: mt6370: Add mt6370 DisplayBias and VibLDO support ChiaEn Wu
2022-06-23 18:18 ` Andy Shevchenko
2022-06-24 10:32 ` ChiaEn Wu
2022-06-28 11:54 ` Andy Shevchenko
2022-06-23 11:56 ` [PATCH v3 10/14] iio: adc: mt6370: Add Mediatek MT6370 support ChiaEn Wu
2022-06-23 18:25 ` Andy Shevchenko
2022-06-23 11:56 ` [PATCH v3 11/14] power: supply: mt6370: Add Mediatek MT6370 charger driver ChiaEn Wu
2022-06-23 18:56 ` Andy Shevchenko
2022-06-29 15:52 ` ChiaEn Wu
2022-06-23 11:56 ` [PATCH v3 12/14] leds: mt6370: Add Mediatek MT6370 current sink type LED Indicator support ChiaEn Wu
2022-06-23 19:29 ` Randy Dunlap
2022-06-24 6:23 ` Linus Walleij
2022-06-24 6:25 ` Linus Walleij
2022-06-24 7:20 ` szuni chen
2022-06-24 21:36 ` Linus Walleij
2022-06-23 11:56 ` [PATCH v3 13/14] leds: flashlight: mt6370: Add Mediatek MT6370 flashlight support ChiaEn Wu
2022-06-23 11:56 ` [PATCH v3 14/14] video: backlight: mt6370: Add Mediatek MT6370 support ChiaEn Wu
2022-06-23 13:43 ` Daniel Thompson
2022-06-24 9:56 ` ChiaEn Wu
2022-06-23 15:48 ` (subset) [PATCH v3 00/14] Add Mediatek MT6370 PMIC support Mark Brown
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