lkml.org 
[lkml]   [2023]   [Aug]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v4 0/1] Change PWM-controlled LED pin active mode and algorithm
Date
According to the circuit diagram of User LEDs - RGB described in themanual hifive-unleashed-a00.pdf[0] and hifive-unmatched-schematics-v3.pdf[1].

The behavior of PWM is acitve-high.

Removed patches: 1
New patches: (none)

Links:
- [0]: https://sifive.cdn.prismic.io/sifive/c52a8e32-05ce-4aaf-95c8-7bf8453f8698_hifive-unleashed-a00-schematics-1.pdf
- [1]: https://sifive.cdn.prismic.io/sifive/6a06d6c0-6e66-49b5-8e9e-e68ce76f4192_hifive-unmatched-schematics-v3.pdf
- [2]: https://sifive.cdn.prismic.io/sifive/1a82e600-1f93-4f41-b2d8-86ed8b16acba_fu740-c000-manual-v1p6.pdf

Changed in v4:
- Remove previous updates to the PWM algorithm.

Changed in v3:
- Convert the reference link to standard link.
- Move the inverted function before taking the minimum value.
- Change polarity check condition(high and low).
- Pick the biggest period length possible that is not bigger than the
requested period.

Changed in v2:
- Convert the reference link to standard link.
- Fix typo: s/sifive unmatched:/sifive: unmatched:/.
- Remove active-low from hifive-unleashed-a00.dts.
- Include this reference link in the dts and pwm commit messages.


Nylon Chen (1):
riscv: dts: sifive: unleashed/unmatched: Remove PWM controlled LED's
active-low properties

arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts | 4 ----
arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts | 4 ----
2 files changed, 8 deletions(-)

--
2.40.1

\
 
 \ /
  Last update: 2023-08-03 10:58    [W:0.052 / U:0.404 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site