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Date: Sun, 15 Oct 2017 12:31:29 +0200 From: Hans Verkuil <hverkuil@...all.nl> To: Heiko Stuebner <heiko@...ech.de>, Pierre-Hugues Husson <phh@....me> Cc: linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org Subject: Re: [PATCH 0/3] Enable CEC on rk3399 On 10/14/2017 04:52 PM, Heiko Stuebner wrote: > Am Samstag, 14. Oktober 2017, 15:14:40 CEST schrieb Pierre-Hugues Husson: >> Hi Hans, >> >>> Nice! I had a similar dw-hdmi.c patch pending but got around to posting it. >>> >>> I'll brush off my old rk3288 patches and see if I can get CEC enabled >>> for my firefly-reload. I was close to getting it work, but I guess >>> missed the "enable cec pin" change. >> Please note that on rk3288, there are two CEC pins, and you must write >> in RK3288_GRF_SOC_CON8 which pin you're using. >> On the firefly-reload, the pin used is GPIO7C0, while the default pin >> configuration is GPIO7C7. > > And as an additional note, later socs have even more of these pin-routing > settings and we currently have infrastructure in the pinctrl driver to do > this automatically depending on the pinctrl settings. > > So most likely this can also be added there for the rk3288. > > > Heiko > How does 'GPIO7C0' translate to a 'rockchip,pins' line? I have this in rk3288-firefly-reload.dts: hdmi { hdmi_cec: hdmi-cec { rockchip,pins = <7 16 RK_FUNC_2 &pcfg_pull_none>; }; }; I think this is correct. You can find my patches for the firefly reload here: https://git.linuxtv.org/hverkuil/media_tree.git/log/?h=firefly2 I don't have access to my firefly reload until Friday, so I can't test this until then. I'd be very grateful though if you can check the last three patches in that branch. It's just a test branch, so the subject/changelog of those patches are incomplete. The very last patch adds CEC support for the firefly/firefly beta. I don't have that hardware, so I won't be able to test that. Regards, Hans
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