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From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Pengyu Luo <mitltlatltl@gmail.com>,
	Bjorn Andersson <andersson@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] clk: qcom: dispcc-sc8280xp: Don't park mdp_clk_src at registration time
Date: Wed, 4 Mar 2026 12:20:04 +0100	[thread overview]
Message-ID: <d90cd589-8a0d-4e72-82ae-7e78dec2320e@oss.qualcomm.com> (raw)
In-Reply-To: <20260303150152.90685-1-mitltlatltl@gmail.com>

On 3/3/26 4:01 PM, Pengyu Luo wrote:
> Parking disp{0,1}_cc_mdss_mdp_clk_src clk broke simplefb on HUAWEI
> Gaokun3, the image will stuck at grey for seconds until msm takes
> over framebuffer. Use clk_rcg2_shared_no_init_park_ops to skip it.

Do you have clk_ignore_unused/pd_ignore_unused in your cmdline?

The sc8280xp-huawei-gaokun3.dts references no clocks in the simplefb
node, so if you're unlucky with timing, this is ""expected behavior""

Konrad

  reply	other threads:[~2026-03-04 11:20 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-03 15:01 [PATCH] clk: qcom: dispcc-sc8280xp: Don't park mdp_clk_src at registration time Pengyu Luo
2026-03-04 11:20 ` Konrad Dybcio [this message]
2026-03-04 11:54   ` Pengyu Luo
2026-03-11 13:32     ` Konrad Dybcio
2026-03-13  9:54       ` Pengyu Luo
2026-05-12 17:02 ` Jérôme de Bretagne

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