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[31.178.127.80]) by smtp.gmail.com with ESMTPSA id d18-20020a056512369200b0047916805548sm256568lfs.242.2022.06.24.01.29.57 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 Jun 2022 01:29:57 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Subject: Re: [PATCH v11 20/24] arm64: dts: rockchip: enable vop2 and hdmi tx on rock-3a From: Piotr Oniszczuk In-Reply-To: <9567EECF-A154-4FE1-A03C-5ED080409030@gmail.com> Date: Fri, 24 Jun 2022 10:29:55 +0200 Cc: Michael Riesch , dri-devel@lists.freedesktop.org, "linux-arm-kernel@lists.infradead.org" , "open list:ARM/Rockchip SoC..." , "devicetree@vger.kernel.org" , kernel@pengutronix.de, Andy Yan , Benjamin Gaignard , Sandy Huang , =?utf-8?Q?Heiko_St=C3=BCbner?= , kernel test robot Content-Transfer-Encoding: quoted-printable Message-Id: <190C3FD3-0185-4A99-B10E-A5790047D993@gmail.com> References: <20220422072841.2206452-1-s.hauer@pengutronix.de> <20220422072841.2206452-21-s.hauer@pengutronix.de> <0E6FE020-C95E-47CF-A9D6-AC3F2B2D334F@gmail.com> <9F2D8CFF-1EAE-4586-9EE9-82A9D67840BB@gmail.com> <9567EECF-A154-4FE1-A03C-5ED080409030@gmail.com> To: Sascha Hauer , Peter Geis X-Mailer: Apple Mail (2.3654.120.0.1.13) Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org > Wiadomo=C5=9B=C4=87 napisana przez Piotr Oniszczuk = w dniu 14.05.2022, o godz. 15:58: >=20 >=20 >=20 >> Wiadomo=C5=9B=C4=87 napisana przez Peter Geis w = dniu 09.05.2022, o godz. 18:00: >>=20 >> If you want to confirm the hardware is configured correctly you can >> remove the cec pin from the hdmi node and set up a cec-gpio node. >> = https://elixir.bootlin.com/linux/v5.18-rc5/source/Documentation/devicetree= /bindings/media/cec-gpio.txt >=20 > Peter, Sascha >=20 > I configured cec-gpio and can confirm: with gpio cec works on my = rock3-a board v1.31. >=20 > So summarising my tests: >=20 > rock3-a v1.1 rock3-a v1.31 = rock3-b >=20 > radxa debian: ok ok = ok >=20 > other ppl mainline 5.18: ok n/t = n/t >=20 > me with mainline 5.18: n/t nok = ok >=20 > me with mainline 5.18 gpio-cec: n/t ok n/t >=20 > Non-working combination is: rock3-a v1.31 hw on mainline 5.18.=20 > For me it looks like there is bug in case when rk3568 using cec on = hdmitxm1_cec line. > (The same binaries working ok on my rock3-b where cec is on = hdmitxm0_cec line. It also works on Peter's rock3a v1.1 - which also = uses hdmitxm0_cec line). >=20 > It looks like upper cec driver can talk to lower driver (dw-hdmi?) but = nothing is received from lower driver, as my app says: > CECAdapter: CEC device can't poll TV: TV does not respond to CEC polls >=20 > btw: I verified with oscilloscope connected to hdmitxm1_cec line: = starting cec-compliance -v -T shows expected series of 0V pulses on = hdmitxm1_cec line.... >=20 >=20 Sascha, Peter I returned to trying to find why hdmi-cec is not working on rock3-a = v1.31 hw. I'm on vop2 v11 on 5.18 mainline. =20 Current findings: (1) the same sw. stack/binaries works on rock-3b (where cec uses = hdmitx_m0 instead of hdmitx_m1 I/O line); (2) gpio-cec however works no problem on rock3-a; (3) monitoring cec messages with v4-utils 'cec-follower -s' shows exact = the same events in non-working rock3-a and working rock3-b (tested by issue configure cec by 'cec-ctl -d /dev/cec0 = --phys-addr=3D1.0.0.0 --playback' command) --> i'm interpreting this as confirmation that low level phy layer = receives ok cec data from connected device on non-working rock3-a; (4) debug sysfs for cec shows "has CEC follower (in passthrough mode)" = for working rock-3b and there is NO "has CEC follower" debug message in = failing rock3-a. For me It looks like low-level hdmi-cec works ok on failing rock3-a - = but upper layers (in hdmi vop2?) are not registering (or failing to = register) cec-follower filehandle. This happens just when hdmitx I/O in = DT is changed from hdmitx_m0 to hdmutx_m1. A bit strange - but all my = tests consistently confirming this observation.... I'm too weak in kernel cec internals - so maybe you have any pointers = how to further debug/investigate this issue? BTW: i'm not alone with cec issue on rock3a v1.31 - already 2 other = users contacted me with the same issue... 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[31.178.127.80]) by smtp.gmail.com with ESMTPSA id d18-20020a056512369200b0047916805548sm256568lfs.242.2022.06.24.01.29.57 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 Jun 2022 01:29:57 -0700 (PDT) Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Subject: Re: [PATCH v11 20/24] arm64: dts: rockchip: enable vop2 and hdmi tx on rock-3a From: Piotr Oniszczuk In-Reply-To: <9567EECF-A154-4FE1-A03C-5ED080409030@gmail.com> Date: Fri, 24 Jun 2022 10:29:55 +0200 Cc: Michael Riesch , dri-devel@lists.freedesktop.org, "linux-arm-kernel@lists.infradead.org" , "open list:ARM/Rockchip SoC..." , "devicetree@vger.kernel.org" , kernel@pengutronix.de, Andy Yan , Benjamin Gaignard , Sandy Huang , =?utf-8?Q?Heiko_St=C3=BCbner?= , kernel test robot Message-Id: <190C3FD3-0185-4A99-B10E-A5790047D993@gmail.com> References: <20220422072841.2206452-1-s.hauer@pengutronix.de> <20220422072841.2206452-21-s.hauer@pengutronix.de> <0E6FE020-C95E-47CF-A9D6-AC3F2B2D334F@gmail.com> <9F2D8CFF-1EAE-4586-9EE9-82A9D67840BB@gmail.com> <9567EECF-A154-4FE1-A03C-5ED080409030@gmail.com> To: Sascha Hauer , Peter Geis X-Mailer: Apple Mail (2.3654.120.0.1.13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220624_013006_863803_1C73F364 X-CRM114-Status: GOOD ( 16.42 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; 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[31.178.127.80]) by smtp.gmail.com with ESMTPSA id d18-20020a056512369200b0047916805548sm256568lfs.242.2022.06.24.01.29.57 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 Jun 2022 01:29:57 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Subject: Re: [PATCH v11 20/24] arm64: dts: rockchip: enable vop2 and hdmi tx on rock-3a From: Piotr Oniszczuk In-Reply-To: <9567EECF-A154-4FE1-A03C-5ED080409030@gmail.com> Date: Fri, 24 Jun 2022 10:29:55 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <190C3FD3-0185-4A99-B10E-A5790047D993@gmail.com> References: <20220422072841.2206452-1-s.hauer@pengutronix.de> <20220422072841.2206452-21-s.hauer@pengutronix.de> <0E6FE020-C95E-47CF-A9D6-AC3F2B2D334F@gmail.com> <9F2D8CFF-1EAE-4586-9EE9-82A9D67840BB@gmail.com> <9567EECF-A154-4FE1-A03C-5ED080409030@gmail.com> To: Sascha Hauer , Peter Geis X-Mailer: Apple Mail (2.3654.120.0.1.13) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "devicetree@vger.kernel.org" , Benjamin Gaignard , Sandy Huang , dri-devel@lists.freedesktop.org, "open list:ARM/Rockchip SoC..." , Michael Riesch , kernel@pengutronix.de, Andy Yan , "linux-arm-kernel@lists.infradead.org" , kernel test robot Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" > Wiadomo=C5=9B=C4=87 napisana przez Piotr Oniszczuk = w dniu 14.05.2022, o godz. 15:58: >=20 >=20 >=20 >> Wiadomo=C5=9B=C4=87 napisana przez Peter Geis w = dniu 09.05.2022, o godz. 18:00: >>=20 >> If you want to confirm the hardware is configured correctly you can >> remove the cec pin from the hdmi node and set up a cec-gpio node. >> = https://elixir.bootlin.com/linux/v5.18-rc5/source/Documentation/devicetree= /bindings/media/cec-gpio.txt >=20 > Peter, Sascha >=20 > I configured cec-gpio and can confirm: with gpio cec works on my = rock3-a board v1.31. >=20 > So summarising my tests: >=20 > rock3-a v1.1 rock3-a v1.31 = rock3-b >=20 > radxa debian: ok ok = ok >=20 > other ppl mainline 5.18: ok n/t = n/t >=20 > me with mainline 5.18: n/t nok = ok >=20 > me with mainline 5.18 gpio-cec: n/t ok n/t >=20 > Non-working combination is: rock3-a v1.31 hw on mainline 5.18.=20 > For me it looks like there is bug in case when rk3568 using cec on = hdmitxm1_cec line. > (The same binaries working ok on my rock3-b where cec is on = hdmitxm0_cec line. It also works on Peter's rock3a v1.1 - which also = uses hdmitxm0_cec line). >=20 > It looks like upper cec driver can talk to lower driver (dw-hdmi?) but = nothing is received from lower driver, as my app says: > CECAdapter: CEC device can't poll TV: TV does not respond to CEC polls >=20 > btw: I verified with oscilloscope connected to hdmitxm1_cec line: = starting cec-compliance -v -T shows expected series of 0V pulses on = hdmitxm1_cec line.... >=20 >=20 Sascha, Peter I returned to trying to find why hdmi-cec is not working on rock3-a = v1.31 hw. I'm on vop2 v11 on 5.18 mainline. =20 Current findings: (1) the same sw. stack/binaries works on rock-3b (where cec uses = hdmitx_m0 instead of hdmitx_m1 I/O line); (2) gpio-cec however works no problem on rock3-a; (3) monitoring cec messages with v4-utils 'cec-follower -s' shows exact = the same events in non-working rock3-a and working rock3-b (tested by issue configure cec by 'cec-ctl -d /dev/cec0 = --phys-addr=3D1.0.0.0 --playback' command) --> i'm interpreting this as confirmation that low level phy layer = receives ok cec data from connected device on non-working rock3-a; (4) debug sysfs for cec shows "has CEC follower (in passthrough mode)" = for working rock-3b and there is NO "has CEC follower" debug message in = failing rock3-a. For me It looks like low-level hdmi-cec works ok on failing rock3-a - = but upper layers (in hdmi vop2?) are not registering (or failing to = register) cec-follower filehandle. This happens just when hdmitx I/O in = DT is changed from hdmitx_m0 to hdmutx_m1. A bit strange - but all my = tests consistently confirming this observation.... I'm too weak in kernel cec internals - so maybe you have any pointers = how to further debug/investigate this issue? BTW: i'm not alone with cec issue on rock3a v1.31 - already 2 other = users contacted me with the same issue... 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[31.178.127.80]) by smtp.gmail.com with ESMTPSA id d18-20020a056512369200b0047916805548sm256568lfs.242.2022.06.24.01.29.57 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 Jun 2022 01:29:57 -0700 (PDT) Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Subject: Re: [PATCH v11 20/24] arm64: dts: rockchip: enable vop2 and hdmi tx on rock-3a From: Piotr Oniszczuk In-Reply-To: <9567EECF-A154-4FE1-A03C-5ED080409030@gmail.com> Date: Fri, 24 Jun 2022 10:29:55 +0200 Cc: Michael Riesch , dri-devel@lists.freedesktop.org, "linux-arm-kernel@lists.infradead.org" , "open list:ARM/Rockchip SoC..." , "devicetree@vger.kernel.org" , kernel@pengutronix.de, Andy Yan , Benjamin Gaignard , Sandy Huang , =?utf-8?Q?Heiko_St=C3=BCbner?= , kernel test robot Message-Id: <190C3FD3-0185-4A99-B10E-A5790047D993@gmail.com> References: <20220422072841.2206452-1-s.hauer@pengutronix.de> <20220422072841.2206452-21-s.hauer@pengutronix.de> <0E6FE020-C95E-47CF-A9D6-AC3F2B2D334F@gmail.com> <9F2D8CFF-1EAE-4586-9EE9-82A9D67840BB@gmail.com> <9567EECF-A154-4FE1-A03C-5ED080409030@gmail.com> To: Sascha Hauer , Peter Geis X-Mailer: Apple Mail (2.3654.120.0.1.13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220624_013006_863803_1C73F364 X-CRM114-Status: GOOD ( 16.42 ) 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; 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