Hi, Rob Herring <robh@xxxxxxxxxx> 於 2021年5月1日 週六 上午4:10寫道： > > On Mon, Apr 26, 2021 at 03:18:09PM +0800, cy_huang wrote: > > From: ChiYuan Huang <cy_huang@xxxxxxxxxxx> > > > > Adds DT binding document for Richtek RT4831 backlight. > > > > Signed-off-by: ChiYuan Huang <cy_huang@xxxxxxxxxxx> > > Reviewed-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx> > > --- > > Resend this v6 patch series to loop devicetree reviewers. > > > > For next, need to add the below line > > Reviewed-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx> > > --- > > .../leds/backlight/richtek,rt4831-backlight.yaml | 65 ++++++++++++++++++++++ > > include/dt-bindings/leds/rt4831-backlight.h | 23 ++++++++ > > 2 files changed, 88 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml > > create mode 100644 include/dt-bindings/leds/rt4831-backlight.h > > > > diff --git a/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml > > new file mode 100644 > > index 00000000..4da6a66 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml > > @@ -0,0 +1,65 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/leds/backlight/richtek,rt4831-backlight.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Richtek RT4831 Backlight > > + > > +maintainers: > > + - ChiYuan Huang <cy_huang@xxxxxxxxxxx> > > + > > +description: | > > + RT4831 is a mutifunctional device that can provide power to the LCD display > > + and LCD backlight. > > + > > + 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 > > + > > Need to reference common backlight schema: > > allOf: > - $ref: common.yaml# > > > +properties: > > + compatible: > > + const: richtek,rt4831-backlight > > + > > + default-brightness: > > + description: | > > + The default brightness that applied to the system on start-up. > > + $ref: /schemas/types.yaml#/definitions/uint32 > > Drop description and $ref. Covered in common.yaml. > OK > > + minimum: 0 > > + maximum: 2048 > > + > > + max-brightness: > > + description: | > > + The max brightness for the H/W limit > > + $ref: /schemas/types.yaml#/definitions/uint32 > > And here. > OK The above changes will be merged in next, thanks. After mfd code patch reviewed, I'll send v7 for all of review comments. > > + minimum: 0 > > + maximum: 2048 > > + > > + richtek,pwm-enable: > > + description: | > > + Specify the backlight dimming following by PWM duty or by SW control. > > + type: boolean > > + > > + richtek,bled-ovp-sel: > > + description: | > > + Backlight OVP level selection, currently support 17V/21V/25V/29V. > > + $ref: /schemas/types.yaml#/definitions/uint8 > > + default: 1 > > + minimum: 0 > > + maximum: 3 > > + > > + richtek,channel-use: > > + description: | > > + Backlight LED channel to be used. > > + BIT 0/1/2/3 is used to indicate led channel 1/2/3/4 enable or disable. > > + $ref: /schemas/types.yaml#/definitions/uint8 > > + minimum: 1 > > + maximum: 15 > > + > > +required: > > + - compatible > > + - richtek,channel-use > > + > > +additionalProperties: false > > diff --git a/include/dt-bindings/leds/rt4831-backlight.h b/include/dt-bindings/leds/rt4831-backlight.h > > new file mode 100644 > > index 00000000..125c635 > > --- /dev/null > > +++ b/include/dt-bindings/leds/rt4831-backlight.h > > @@ -0,0 +1,23 @@ > > +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ > > +/* > > + * This header provides constants for rt4831 backlight bindings. > > + * > > + * Copyright (C) 2020, Richtek Technology Corp. > > + * Author: ChiYuan Huang <cy_huang@xxxxxxxxxxx> > > + */ > > + > > +#ifndef _DT_BINDINGS_RT4831_BACKLIGHT_H > > +#define _DT_BINDINGS_RT4831_BACKLIGHT_H > > + > > +#define RT4831_BLOVPLVL_17V 0 > > +#define RT4831_BLOVPLVL_21V 1 > > +#define RT4831_BLOVPLVL_25V 2 > > +#define RT4831_BLOVPLVL_29V 3 > > + > > +#define RT4831_BLED_CH1EN (1 << 0) > > +#define RT4831_BLED_CH2EN (1 << 1) > > +#define RT4831_BLED_CH3EN (1 << 2) > > +#define RT4831_BLED_CH4EN (1 << 3) > > +#define RT4831_BLED_ALLCHEN ((1 << 4) - 1) > > + > > +#endif /* _DT_BINDINGS_RT4831_BACKLIGHT_H */ > > -- > > 2.7.4 > >
