From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomi Valkeinen Subject: Re: [PATCH] ARM: dts: duovero-parlor: Add HDMI output Date: Wed, 21 May 2014 11:26:10 +0300 Message-ID: <537C6322.2000101@ti.com> References: <1400595946-1294-1-git-send-email-florian.vaussard@epfl.ch> <537C6082.2000405@epfl.ch> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="l1J1rcoqrcM7het9HeBlXSpF90hC1vUc1" Return-path: Received: from devils.ext.ti.com ([198.47.26.153]:38205 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752139AbaEUI0o (ORCPT ); Wed, 21 May 2014 04:26:44 -0400 In-Reply-To: <537C6082.2000405@epfl.ch> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: florian.vaussard@epfl.ch, Joachim Eastwood Cc: Tony Lindgren , linux-omap , "linux-arm-kernel@lists.infradead.org" , devicetree@vger.kernel.org --l1J1rcoqrcM7het9HeBlXSpF90hC1vUc1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 21/05/14 11:14, Florian Vaussard wrote: >> I think Parlor has one and the "hdmi-connector" binding now supports >> it. See Tomi's 3.16/fbdev-omap branch. >> >=20 > Looking into the details, the HPD pin of the parlor board is connected > to the OMAP4 HDMI IP. The LINK_CONNECT and LINK_DISCONNECT events are > managed by hdmi_irq_handler() in hdmi4.c to turn on/off the PHY's power= =2E > So there is no need to use the hgp-gpios binding of "hdmi-connector" > IMHO. Correct me if I am wrong, as the public TRM is pretty thin > regarding the OMAP4 HDMI IP. The PHY's link-connect and disconnect are a separate thing, not really related to the HPD. The hdmi_hpd pin on OMAP should be configured to GPIO mode, and the GPIO should be handled by the hdmi-connector. The HDMI driver doesn't have support for the HDMI IP's HPD, and if I recall right, the HDMI IP's HPD was not without problems. And afaik it doesn't really bring anything, a normal GPIO does the job just fine. Tomi --l1J1rcoqrcM7het9HeBlXSpF90hC1vUc1 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJTfGMmAAoJEPo9qoy8lh71Va4QAIccpqJHEGCiJ1Nxec+Q3R1s qqMKIpkaU2wnlYisf5qU94MxOIXAHaIQLZI8qKd0hwLj/2ApLs01dYRrGh35hE4M RYJ9Y1fTwya6nWCg0lnXyjn/M32bUaBM8PsMrAwdPXbqTOhf7/HgSCIorVd3AlrK iMQhd1LMwyXwXESRt223NnL76m+ZLb4HD4bqBczSKpg/lxAcbzm2w9pIKrgytuxK c1iEH3WLaBhaJ1eVRADoIcqJ+wcvL4ermN9qK5Onlx6lt9PQKxV6zgnRFirb34UH +Rc9gRl/LPSCvCefSxjeC91sCkYOqKNcwfQ7zX8VLO+CSr4sgtKVoA2+32DU8Deh R1DjNHRNvJzAxzpkRorOTcUFJn4A4lClIuifPrV0v/Nt8TWOtgW50IMhnyfLF71j GeIw4/afwaYTqwK21ARnkHc03+57iQwVZhobommkoo43w1rEVsKbY+84WoJBPkLw 5nhSg6OYn/jzww1zsfcm8tHPXSCPTmCAlwfBoWHWoIYo3TzxnOrQTcpk2NqKc28c NyDo7xdBvjvkLwtLFdNoYxC2kY50MG6HWdywoVqj+geiAEX9uR5LJ6V16i9qqgSl xbD/lB/ugzh7MPPJe8Y1ed43/w3HJybCu8p3Q0yqhrntdne8+dD3bT+rs44SC0TJ 3H+0wzD1aJAdWLyGiTB5 =xIzT -----END PGP SIGNATURE----- --l1J1rcoqrcM7het9HeBlXSpF90hC1vUc1-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: tomi.valkeinen@ti.com (Tomi Valkeinen) Date: Wed, 21 May 2014 11:26:10 +0300 Subject: [PATCH] ARM: dts: duovero-parlor: Add HDMI output In-Reply-To: <537C6082.2000405@epfl.ch> References: <1400595946-1294-1-git-send-email-florian.vaussard@epfl.ch> <537C6082.2000405@epfl.ch> Message-ID: <537C6322.2000101@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 21/05/14 11:14, Florian Vaussard wrote: >> I think Parlor has one and the "hdmi-connector" binding now supports >> it. See Tomi's 3.16/fbdev-omap branch. >> > > Looking into the details, the HPD pin of the parlor board is connected > to the OMAP4 HDMI IP. The LINK_CONNECT and LINK_DISCONNECT events are > managed by hdmi_irq_handler() in hdmi4.c to turn on/off the PHY's power. > So there is no need to use the hgp-gpios binding of "hdmi-connector" > IMHO. Correct me if I am wrong, as the public TRM is pretty thin > regarding the OMAP4 HDMI IP. The PHY's link-connect and disconnect are a separate thing, not really related to the HPD. The hdmi_hpd pin on OMAP should be configured to GPIO mode, and the GPIO should be handled by the hdmi-connector. The HDMI driver doesn't have support for the HDMI IP's HPD, and if I recall right, the HDMI IP's HPD was not without problems. And afaik it doesn't really bring anything, a normal GPIO does the job just fine. Tomi -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: OpenPGP digital signature URL: