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SubjectRe: [PATCH v2] arm: sun4i: Add support for Pengpod 1000 tablet
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On 04/06/18 09:13, Maxime Ripard wrote:
> On Sat, Jun 02, 2018 at 05:03:13PM +0100, Bob Ham wrote:

>> + * This file is dual-licensed: you can use it either under the terms
>> + * of the GPL or the X11 license, at your option. Note that this dual
>> + * licensing only applies to this file, and not this project as a
>> + * whole.

>> + * The above copyright notice and this permission notice shall be
>> + * included in all copies or substantial portions of the Software.

> And this is redundant with the SPDX header.

The X11 license notice states explicitly that the notice has to be
included in the file. Wouldn't removing it be a violation of the license?


>> + brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
>
> Each step should increase the perceived brightness by roughly 1/Nth, N
> being the number of steps. Usually PWM backlights don't work like that.

FYI, this was copied from another .dts file. All of the other
brightness-levels settings in sun{4,5,7}i .dts files follow similar
patterns:

sun4i-a10-dserve-dsrv9703c.dts: brightness-levels = <0 10
20 30 40 50 60 70 80 90 100>;
sun4i-a10-inet1.dts: brightness-levels = <0 10 20 30 40 50 60
70 80 90 100>;
sun4i-a10-pov-protab2-ips9.dts: brightness-levels = <0 10
20 30 40 50 60 70 80 90 100>;
sun5i-a13-empire-electronix-d709.dts: brightness-levels = <0 10
20 30 40 50 60 70 80 90 100>;
sun5i-a13-utoo-p66.dts: brightness-levels = <0 30 40 50 60 70 80
90 100>;
sun5i-gr8-evb.dts: brightness-levels = <0 10 20 30 40 50 60
70 80 90 100>;
sun7i-a20-wexler-tab7200.dts: brightness-levels = <0 10 20 30 40
50 60 70 80 90 100>;

I'll take the brightness-levels from sun8i-a83t-tbs-a711.dts which
follows a more appropriate pattern:

sun8i-a83t-tbs-a711.dts: brightness-levels = <0 1 2 4 8 16
32 64 128 255>;


Thanks,

Bob

--
Bob Ham <rah@settrans.net>

for (;;) { ++pancakes; }

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