From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
cros-qcom-dts-watchers@chromium.org,
Konrad Dybcio <konradybcio@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] arm64: dts: qcom: sc7280: Add MDSS_CORE reset to mdss
Date: Tue, 12 Aug 2025 10:48:24 +0200 [thread overview]
Message-ID: <61a781d3-eb4f-4c56-8873-41c95999630f@oss.qualcomm.com> (raw)
In-Reply-To: <20250811-sc7280-mdss-reset-v1-3-83ceff1d48de@oss.qualcomm.com>
On 8/12/25 5:11 AM, Bjorn Andersson wrote:
> Like on other platforms, if the OS does not support recovering the state
> left by the bootloader it needs access to MDSS_CORE, so that it can
> clear the MDSS configuration.
>
> Until now it seems no version of the bootloaders have done so, but e.g.
> the Particle Tachyon ships with a bootloader that does leave the display
> in a state that results in a series of iommu faults.
>
> So let's provide the reset, to allow the OS to clear that state.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2025-08-12 8:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-12 3:11 [PATCH 0/3] arm64: dts: qcom: sc7280: Add the MDSS_CORE reset Bjorn Andersson
2025-08-12 3:11 ` [PATCH 1/3] dt-bindings: clock: dispcc-sc7280: Add display resets Bjorn Andersson
2025-08-12 5:07 ` Taniya Das
2025-08-12 3:11 ` [PATCH 2/3] clk: qcom: dispcc-sc7280: Add dispcc resets Bjorn Andersson
2025-08-12 5:05 ` Taniya Das
2025-08-12 14:54 ` Bjorn Andersson
2025-08-12 3:11 ` [PATCH 3/3] arm64: dts: qcom: sc7280: Add MDSS_CORE reset to mdss Bjorn Andersson
2025-08-12 8:48 ` Konrad Dybcio [this message]
2025-08-12 21:13 ` (subset) [PATCH 0/3] arm64: dts: qcom: sc7280: Add the MDSS_CORE reset Bjorn Andersson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=61a781d3-eb4f-4c56-8873-41c95999630f@oss.qualcomm.com \
--to=konrad.dybcio@oss.qualcomm.com \
--cc=andersson@kernel.org \
--cc=bjorn.andersson@oss.qualcomm.com \
--cc=conor+dt@kernel.org \
--cc=cros-qcom-dts-watchers@chromium.org \
--cc=devicetree@vger.kernel.org \
--cc=konradybcio@kernel.org \
--cc=krzk+dt@kernel.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-clk@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mturquette@baylibre.com \
--cc=robh@kernel.org \
--cc=sboyd@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.