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Wed, 13 Oct 2021 08:59:36 -0400 (EDT) From: Maxime Ripard To: Maxime Ripard , Maarten Lankhorst , David Airlie , Daniel Vetter , Thomas Zimmermann Cc: Linus Torvalds , linux-rpi-kernel@lists.infradead.org, Florian Fainelli , Mike Turquette , Michael Stapelberg , Nicolas Saenz Julienne , linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, Dave Stevenson , Stephen Boyd Subject: Re: (subset) [PATCH 5/5] drm/vc4: hdmi: Make sure the controller is powered in detect Date: Wed, 13 Oct 2021 14:59:25 +0200 Message-Id: <163412979204.237205.12502576005063521363.b4-ty@cerno.tech> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210922125419.4125779-6-maxime@cerno.tech> References: <20210922125419.4125779-1-maxime@cerno.tech> <20210922125419.4125779-6-maxime@cerno.tech> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211013_055937_559315_271D33C8 X-CRM114-Status: UNSURE ( 8.35 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 22 Sep 2021 14:54:19 +0200, Maxime Ripard wrote: > If the HPD GPIO is not available and drm_probe_ddc fails, we end up > reading the HDMI_HOTPLUG register, but the controller might be powered > off resulting in a CPU hang. Make sure we have the power domain and the > HSM clock powered during the detect cycle to prevent the hang from > happening. > > > [...] Applied to drm/drm-misc (drm-misc-fixes). Thanks! Maxime _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel