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Posted to dev@nuttx.apache.org by "Lee, Lup Yuen" <lu...@appkaki.com> on 2023/09/02 16:15:10 UTC

[Article] NuttX on Star64 JH7110: Power Up the Display Controller with U-Boot Bootloader

In olden days we’d "peek" and "poke" the Display Controller, to see weird
and wonderful displays. Today (46 years later), we poke around the Display
Controller of Star64 JH7110 RISC-V SBC with a modern tool (not BASIC):
U-Boot Bootloader!

In this article we discover…
(1) U-Boot Commands "md" and "mw" for Dumping and Writing Memory
(2) That we use to power up the Video Output and Display Controller on the
StarFive JH7110 SoC
(3) By modding the JH7110 Registers for Power Management Unit, Clock and
Reset
(4) Also how we’ll create our NuttX Display Driver for JH7110
(5) In spite of the Missing and Incorrect Docs

Here's the article: https://lupyuen.codeberg.page/articles/display3.html

Lup

RE: [Article] NuttX on Star64 JH7110: Power Up the Display Controller with U-Boot Bootloader

Posted by "Alin.Jerpelea@sony.com" <Al...@sony.com>.
Nice article 😊

Best regards
Alin

From: Tomek CEDRO <to...@cedro.info>
Sent: den 2 september 2023 18:44
To: dev@nuttx.apache.org
Subject: Re: [Article] NuttX on Star64 JH7110: Power Up the Display Controller with U-Boot Bootloader

wow :-) -- CeDeROM, SQ7MHZ, https:β€Š//urldefense.β€Šcom/v3/__http:β€Š//www.β€Štomek.β€Šcedro.β€Šinfo__;!!JmoZiZGBv3RvKRSx!4lnUdbygN2dI2DgYnSUygt7iGWgF7yxc2ITcufM4-YJtnXg57U7aaS97hmPVbdGcLvx22GyBHdrIvIsN1g$ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍ ‍
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wow :-)



--

CeDeROM, SQ7MHZ, http://www.tomek.cedro.info<http://www.tomek.cedro.info>

Re: [Article] NuttX on Star64 JH7110: Power Up the Display Controller with U-Boot Bootloader

Posted by Tomek CEDRO <to...@cedro.info>.
wow :-)

--
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info