lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Mon, 4 Mar 2019 13:14:04 -0600
From:   Dan Murphy <>
To:     Pavel Machek <>
CC:     Jacek Anaszewski <>,
        Rob Herring <>, <>,
        <>, <>,
        <>, <>
Subject: Re: [PATCH v4 2/7] dt-bindings: ti-lmu: Modify dt bindings for the


On 3/2/19 5:07 PM, Pavel Machek wrote:
> Hi!
>> I just want to follow up here and let you know that I have not abandoned this.
>> I am trying to rework and fix up the ti lmu binding as asked by Pavel.  Its proving
>> to be a bit of a challenge based on looking forward to what will be the implementation.
>> I also did go offline and speak with Tony.  I have a Droid 4 so I can test all of this on
>> production hardware as well.
>> Updated patchset will take some time to get out.
> Is there any progress here?
> This is needed for display on Droid 4, so it is somehow
> important... and Milo Kim's patches are pretty reasonable.
> I still believe best way forward is to merge them, and let you submit
> any improvements on top of them...

I had looked at this a while back.  And I will pick this up again as it seems that the
multi color framework will take longer than expected.

For the Droid 4 it uses the lm3552 backlight driver, at least that is what is in the DT.

There is a lm3530 backlight driver that is already available and could be upgraded to DT support and have the lm3552
added to it but the issues are the 3532 has 3 outputs and the 3530 has 1 and the register map is a bit different.

There are register differences between the two devices but the driver already has ramp support, PWM support (exponential/linear),
ALS support and manual support already available along with user space configuration.

I was working on creating a new lm3532 driver based off the lm3530 driver or adapting the 3530 to include the 3532 and
making the driver generic to this family.


> Best regards,
> 									Pavel

Dan Murphy

Powered by blists - more mailing lists