| lists.openwall.net | 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 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 28 May 2024 12:40:36 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Matthias Brugger <matthias.bgg@...il.com>,
Pin-yen Lin <treapking@...omium.org>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
Nícolas F . R . A . Prado <nfraprado@...labora.com>,
linux-mediatek@...ts.infradead.org,
Hsin-Te Yuan <yuanhsinte@...omium.org>,
devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] arm64: dts: mediatek: mt8192-asurada: Add off-on-delay-us for pp3300_mipibrdg
On Thu, 02 May 2024 23:39:51 +0800, Pin-yen Lin wrote:
> Set off-on-delay-us to 500000 us for pp3300_mipibrdg to make sure it
> complies with the panel's unprepare delay (the time to power down
> completely) of the power sequence. Explicit configuration on the
> regulator node is required because mt8192-asurada uses the same power
> supply for the panel and the anx7625 DP bridge.
>
> For example, the power sequence could be violated in this sequence:
> 1. Bridge on: panel goes off, but regulator doesn't turn off (refcount=1).
> 2. Bridge off: regulator turns off (refcount=0).
> 3. Bridge resume -> regulator turns on but the bridge driver doesn't
> check the delay.
>
> [...]
Applied to v6.10-next/dts64, thanks!
[1/1] arm64: dts: mediatek: mt8192-asurada: Add off-on-delay-us for pp3300_mipibrdg
commit: 476d7adf84deb884e0f8f74417bf5249ab9a95b3
Cheers,
Angelo
Powered by blists - more mailing lists