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[213.161.3.76]) by smtp.gmail.com with ESMTPSA id da26-20020a056402177a00b004315050d7dfsm7271922edb.81.2022.06.14.08.45.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Jun 2022 08:45:56 -0700 (PDT) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: Maxime Ripard , Chen-Yu Tsai , Samuel Holland Cc: Samuel Holland , Daniel Vetter , David Airlie , "H. Nikolaus Schaller" , Laurent Pinchart , Neil Armstrong , Paul Cercueil , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev Subject: Re: [PATCH] drm/sun4i: dw-hdmi: Fix ddc-en GPIO consumer conflict Date: Tue, 14 Jun 2022 17:45:55 +0200 Message-ID: <8075386.T7Z3S40VBb@kista> In-Reply-To: <20220614073100.11550-1-samuel@sholland.org> References: <20220614073100.11550-1-samuel@sholland.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220614_084558_709567_2BEB9A3D X-CRM114-Status: GOOD ( 12.29 ) 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 Dne torek, 14. junij 2022 ob 09:31:00 CEST je Samuel Holland napisal(a): > commit 6de79dd3a920 ("drm/bridge: display-connector: add ddc-en gpio > support") added a consumer for this GPIO in the HDMI connector device. > This new consumer conflicts with the pre-existing GPIO consumer in the > sun8i HDMI controller driver, which prevents the driver from probing: > > [ 4.983358] display-connector connector: GPIO lookup for consumer ddc- en > [ 4.983364] display-connector connector: using device tree for GPIO lookup > [ 4.983392] gpio-226 (ddc-en): gpiod_request: status -16 > [ 4.983399] sun8i-dw-hdmi 6000000.hdmi: Couldn't get ddc-en gpio > [ 4.983618] sun4i-drm display-engine: failed to bind 6000000.hdmi (ops sun8i_dw_hdmi_ops [sun8i_drm_hdmi]): -16 > [ 4.984082] sun4i-drm display-engine: Couldn't bind all pipelines components > [ 4.984171] sun4i-drm display-engine: adev bind failed: -16 > [ 4.984179] sun8i-dw-hdmi: probe of 6000000.hdmi failed with error -16 > > Both drivers have the same behavior: they leave the GPIO active for the > life of the device. Let's take advantage of the new implementation, and > drop the now-obsolete code from the HDMI controller driver. > > Fixes: 6de79dd3a920 ("drm/bridge: display-connector: add ddc-en gpio support") > Signed-off-by: Samuel Holland Reviewed-by: Jernej Skrabec Best regards, Jernej _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel