Re: [PATCH V1 1/4] qcom: spmi-wled: Add support for qcom wled driver

From: Pavel Machek
Date: Fri Dec 15 2017 - 15:30:48 EST


On Thu 2017-11-16 17:48:34, Kiran Gunda wrote:
> WLED driver provides the interface to the display driver to
> adjust the brightness of the display backlight.
>
> Signed-off-by: Kiran Gunda <kgunda@xxxxxxxxxxxxxx>
> ---
> .../bindings/leds/backlight/qcom-spmi-wled.txt | 90 ++++
> drivers/video/backlight/Kconfig | 9 +
> drivers/video/backlight/Makefile | 1 +
> drivers/video/backlight/qcom-spmi-wled.c | 504 +++++++++++++++++++++
> 4 files changed, 604 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/leds/backlight/qcom-spmi-wled.txt
> create mode 100644 drivers/video/backlight/qcom-spmi-wled.c
>
> diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-spmi-wled.txt b/Documentation/devicetree/bindings/leds/backlight/qcom-spmi-wled.txt
> new file mode 100644
> index 0000000..f1ea25b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-spmi-wled.txt
> @@ -0,0 +1,90 @@
> +Binding for Qualcomm WLED driver
> +
> +WLED (White Light Emitting Diode) driver is used for controlling display
> +backlight that is part of PMIC on Qualcomm Technologies reference platforms.
> +The PMIC is connected to the host processor via SPMI bus.
> +
> +- compatible
> + Usage: required
> + Value type: <string>
> + Definition: should be "qcom,pm8998-spmi-wled".
> +
> +- reg
> + Usage: required
> + Value type: <prop-encoded-array>
> + Definition: Base address and size of the WLED modules.
> +
> +- reg-names
> + Usage: required
> + Value type: <string>
> + Definition: Names associated with base addresses. should be
> + "qcom-wled-ctrl-base", "qcom-wled-sink-base".
> +
> +- label
> + Usage: required
> + Value type: <string>
> + Definition: The name of the backlight device.
> +
> +- default-brightness
> + Usage: optional
> + Value type: <u32>
> + Definition: brightness value on boot, value from: 0-4095
> + default: 2048
> +
> +- qcom,fs-current-limit

I'd add "-uA" suffix here.

> + Usage: optional
> + Value type: <u32>
> + Definition: per-string full scale current limit in uA. value from
> + 0 to 30000 with 5000 uA resolution. default: 25000 uA
> +
> +- qcom,current-boost-limit

And -mA suffix here. Similar for other units.

Thanks,
Pavel


--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Attachment: signature.asc
Description: Digital signature