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
On Thu, 23 Jun 2022 19:56:22 +0800, ChiaEn Wu wrote: > 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 > Reviewed-by: Rob Herring <robh@kernel.org>
On Thu, Jun 23, 2022 at 07:56:22PM +0800, ChiaEn Wu wrote: > 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. more than? Thanks, Joe > + > + 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: > + $ref: /schemas/types.yaml#/definitions/uint8 > + description: | > + Backlight LED channel to be used. > + Each bit mapping to: > + - 0: CH4 > + - 1: CH3 > + - 2: CH2 > + - 3: CH1 > + minimum: 1 > + maximum: 15 > + > +required: > + - compatible > + - mediatek,bled-channel-use > + > +additionalProperties: false > -- > 2.7.4 >
Hi Joe, Joe Simmons-Talbott <joetalbott@gmail.com> 於 2022年6月23日 週四 晚上9:17寫道: > > On Thu, Jun 23, 2022 at 07:56:22PM +0800, ChiaEn Wu wrote: > > From: ChiYuan Huang <cy_huang@richtek.com> > > > > Add mt6370 backlight binding documentation. > > > > Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> > > --- > > > > v3 > > - Rename "mediatek,bled-pwm-hys-input-threshold-steps" to > > "mediatek,bled-pwm-hys-input-th-steps" > > - Refine "bled-pwm-hys-input-th-steps", "bled-ovp-microvolt", > > "bled-ocp-microamp" enum values > > --- > > .../leds/backlight/mediatek,mt6370-backlight.yaml | 92 ++++++++++++++++++++++ > > 1 file changed, 92 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml > > > > diff --git a/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml > > new file mode 100644 > > index 0000000..26563ae > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml > > @@ -0,0 +1,92 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$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. > > more than? > > Thanks, > Joe > Thanks for your helpful comments! I will revise this in the next patch. Thanks! > > + > > + 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 > > Best regards, ChiaEn Wu
© 2016 - 2024 Red Hat, Inc.