From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 001A0C433F5 for ; Sat, 15 Jan 2022 10:52:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To: Subject:Cc:To:From:Date:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=N2AZ0NWJiPN6vc7or0iHDcU7SrNhxMKRKsgO0FaXtxU=; b=Rx5mGaAc4T8Qxe NELUQO+5jQk6CnKZ2ZnvLUCFN6y7XKGbS0wD0HGuQ18zjV0sKy4DRogi7y9jmXCFHmh56rjC6zsv/ lSkQ3j42NwHYZo2byYmBTkK6eriqgZbU9uVO0AgnEh1CDgEOu8mWm1yB7ACWA5M8RFETUVDprJiC2 eFjoHuyY6fgcvAjHUQWKAwqa+8DKr9Kaa644Kjp8kOQDsTfk3WP7eFxaON7Wl3j1LHR9oZP1J61BY yvk3d0a19V5wlRSCiFwJcUzzvFXFnmiDrVUHJSWKD4kqbfPJcwIO5b0iteRXI9Az/616XgYudV5dK fav97D8oVq9iFp9k/wqQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n8gfp-00Axss-AY; Sat, 15 Jan 2022 10:52:41 +0000 Received: from mail.kmu-office.ch ([2a02:418:6a02::a2]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n8gfl-00AxsE-0J for linux-amlogic@lists.infradead.org; Sat, 15 Jan 2022 10:52:39 +0000 Received: from webmail.kmu-office.ch (unknown [IPv6:2a02:418:6a02::a3]) by mail.kmu-office.ch (Postfix) with ESMTPSA id C05EF5C2270; Sat, 15 Jan 2022 11:52:31 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=agner.ch; s=dkim; t=1642243951; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=miarnX3VEQt3gL/Y2vxztbfjEWeEFx4zHSIOYiBK09g=; b=Je0ErrSWQZaj8LyNl0DkbraTeaRIKoelnPRwyayVgixEC8PslLPWdyG9tnuodJtdZ/dkrO Uebjk9feprXjTJtcdbXlGEOI/1Qc6o80GjHslJymzEC2XOjtcUS+Q4ylRfajoJb1BgHvIE oujUi5KYH4X/i1MZ8avLGsLz5wrG8Co= MIME-Version: 1.0 Date: Sat, 15 Jan 2022 11:52:31 +0100 From: Stefan Agner To: Alexander Stein Cc: narmstrong@baylibre.com, linux-amlogic@lists.infradead.org, linux-media@vger.kernel.org Subject: Re: (EXT) HDMI CEC on ODROID-N2+ In-Reply-To: <5560050.DvuYhMxLoT@kongar> References: <5560050.DvuYhMxLoT@kongar> User-Agent: Roundcube Webmail/1.4.9 Message-ID: <8112d37eaed169735ca8b46e5d587210@agner.ch> X-Sender: stefan@agner.ch X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220115_025237_700346_A6073D9C X-CRM114-Status: GOOD ( 17.40 ) 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 Alexander, On 2022-01-15 11:02, Alexander Stein wrote: > Hi Stefan, > > Am Donnerstag, 13. Januar 2022, 15:36:38 CET schrieb Stefan Agner: >> 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'm using Arch Linux on my ODROID-n2 (non-plus) and HDMI CEC works as > expected. > Currently I'm running a 5.15.13-1-aarch64-ARCH kernel. AFAICS the mentioned > patch is mainline since v5.14. I can see my TV without issues. I have to add > that not every cable is suitable for HDMI CEC, I have one where CEC does not > work (in general). Hm, interesting, thanks for the datapoint! I tried to reproduce your findings, unfortunately I am not successful in booting mainline using Arch Linux ARM so far. It seems it comes with downstream 4.9 kernel by default (where CEC seems to work in this case too). I then installed linux-aarch64 and adjusted the device tree, but it seems that the downstream U-Boot 2015.01-10 has some hardcoded "rsvmem" command which fails. How are you booting v5.14? It is a bit surprising that 5.15.13 works for you but 5.16 didn't for me. That makes me wonder, could it be bootloader dependent? Are you using downstream U-Boot? -- Stefan > > HTH > Alexander > ------ > $ cec-ctl --playback > $ cec-ctl -S > Driver Info: > Driver Name : meson-ao-cec-g12a > Adapter Name : meson_g12a_ao_cec > Capabilities : 0x0000011e > Logical Addresses > Transmit > Passthrough > Remote Control Support > Connector Info > Driver version : 5.15.13 > Available Logical Addresses: 4 > DRM Connector Info : card 1, connector 32 > Physical Address : 1.0.0.0 > Logical Address Mask : 0x0010 > CEC Version : 2.0 > Vendor ID : 0x000c03 (HDMI) > OSD Name : 'Playback' > Logical Addresses : 1 (Allow RC Passthrough) > > Logical Address : 4 (Playback Device 1) > Primary Device Type : Playback > Logical Address Type : Playback > All Device Types : Playback > RC TV Profile : None > Device Features : > None > > System Information for device 0 (TV) from device 4 (Playback Device > 1): > CEC Version : 1.4 > Physical Address : 0.0.0.0 > Primary Device Type : TV > Vendor ID : 0x080046 (Sony) > OSD Name : 'TV' > Power Status : Standby > > Topology: > > 0.0.0.0: TV > 1.0.0.0: Playback Device 1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic