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([2001:861:44c0:66c0:bece:ab45:7469:4195]) by smtp.gmail.com with ESMTPSA id j11sm4009125wmq.23.2022.01.13.07.52.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 13 Jan 2022 07:52:22 -0800 (PST) Subject: Re: HDMI CEC on ODROID-N2+ To: Stefan Agner , linux-amlogic@lists.infradead.org, linux-media@vger.kernel.org References: From: Neil Armstrong Organization: Baylibre Message-ID: Date: Thu, 13 Jan 2022 16:52:22 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220113_075228_651291_F0062E80 X-CRM114-Status: GOOD ( 16.26 ) X-BeenThere: linux-amlogic@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-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Hi, On 13/01/2022 15:36, Stefan Agner wrote: > Hi Neil, > > I am trying to use HDMI CEC on ODROID-N2+ using Linux 5.10.91. However, > I was unsuccessful: As far as I can tell cec-client uses the right > device (I disabled CONFIG_DRM_DW_HDMI_CEC since my kernel is still > missing your patch "drm/meson: dw-hdmi: disable DW-HDMI CEC > sub-driver"). But communication won't work, and dmesg prints timeout > messages: > > [ 68.831253] cec-meson_g12a_ao_cec: message ff 84 20 00 06 timed out > [ 71.134987] cec-meson_g12a_ao_cec: message ff 87 00 15 82 timed out > [ 73.438826] cec-meson_g12a_ao_cec: message f0 timed out > [ 75.742677] cec-meson_g12a_ao_cec: message f0 timed out > [ 78.046555] cec-meson_g12a_ao_cec: message f0 timed out > [ 80.350446] cec-meson_g12a_ao_cec: message f0 timed out > [ 82.654358] cec-meson_g12a_ao_cec: message 11 timed out > [ 84.958285] cec-meson_g12a_ao_cec: message 11 timed out > [ 87.262194] cec-meson_g12a_ao_cec: message 11 timed out > [ 89.566130] cec-meson_g12a_ao_cec: message 11 timed out > > I did a quick test with CoreELEC which uses the 4.9 downstream kernel, > CEC seems to work there. So it does not seem to be my hardware setup. > > A quick test with the latest Linux 5.16 shows the same errors. > > Do you happen to have an idea? Do you know if HDMI CEC using upstream > kernels worked at one point on that particular platform? I was reported it works on Yukawa 5.10 kernel, I'll have a check it still works. Neil > > -- > Stefan > _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic