From patchwork Wed May 7 07:46:24 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: YoungJun Cho X-Patchwork-Id: 346401 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id A1622140276 for ; Wed, 7 May 2014 17:46:52 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753584AbaEGHqv (ORCPT ); Wed, 7 May 2014 03:46:51 -0400 Received: from mailout3.samsung.com ([203.254.224.33]:50962 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751252AbaEGHqs (ORCPT ); Wed, 7 May 2014 03:46:48 -0400 MIME-version: 1.0 Content-type: text/plain; charset=UTF-8 Received: from epcpsbgr3.samsung.com (u143.gpu120.samsung.co.kr [203.254.230.143]) by mailout3.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0N57009MS1LVDP90@mailout3.samsung.com>; Wed, 07 May 2014 16:46:43 +0900 (KST) Received: from epcpsbgm1.samsung.com ( [203.254.230.45]) by epcpsbgr3.samsung.com (EPCPMTA) with SMTP id A9.BC.11120.3E4E9635; Wed, 07 May 2014 16:46:43 +0900 (KST) X-AuditID: cbfee68f-b7eff6d000002b70-2c-5369e4e38201 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id D6.26.27725.2E4E9635; Wed, 07 May 2014 16:46:43 +0900 (KST) Content-transfer-encoding: 8BIT Received: from localhost.localdomain ([10.252.75.90]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0N5700FKJ1LRTV30@mmp2.samsung.com>; Wed, 07 May 2014 16:46:42 +0900 (KST) From: YoungJun Cho To: airlied@linux.ie, dri-devel@lists.freedesktop.org Cc: devicetree@vger.kernel.org, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linux-samsung-soc@vger.kernel.org, thierry.reding@gmail.com, kyungmin.park@samsung.com, inki.dae@samsung.com, kgene.kim@samsung.com, jy0922.shim@samsung.com, sw0312.kim@samsung.com, a.hajda@samsung.com, laurent.pinchart@ideasonboard.com, s.trumtrar@pengutronix.de Subject: =?UTF-8?q?=5BRFC=20v4=20PATCH=2003/18=5D=20ARM=3A=20dts=3A=20video=3A=20add=20command=20mode=20display=20timing=20DT=20bindings?= Date: Wed, 07 May 2014 16:46:24 +0900 Message-id: <1399448799-8057-4-git-send-email-yj44.cho@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1399448799-8057-1-git-send-email-yj44.cho@samsung.com> References: <1399448799-8057-1-git-send-email-yj44.cho@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprEKsWRmVeSWpSXmKPExsVy+t8zXd3HTzKDDf5d4rK4te4cq0XvuZNM FvOPAFlXvr5ns+h/s5DV4tyrlYwWk+5PYLF4ce8ii0XvgqtsFmeb3rBbdE5cwm4x4/w+Joul 1y8yWUyYvpbFonXvEXaLTx8XsljMmPySzeLnrnksDkIea+atYfS43NfL5LFz1l12j5XLv7B5 zO6YyeqxaVUnm8f2bw9YPe53H2fy6P9r4NG3ZRWjx+dNcgHcUVw2Kak5mWWpRfp2CVwZr9o/ sRcslqw4uXgKcwPjO6EuRk4OCQETiSkTprJA2GISF+6tZ+ti5OIQEljGKLHt60smmKJls7ax QySmM0qcXX4SrINXQFDix+R7QDYHB7OAvMSRS9kgYWYBdYlJ8xYxQ9S3Mkm0HvjCDJJgE9CU eP5xByuILSJgKtExaSkLSBGzwBJmif2zH4BtEBboYZToO/mHHaSKRUBVYu/lycwQ25wlVly6 wwyyTUJAQWLOJBuQMKeAi8SLDx8ZQWwhoJKLa06CDZUQuMIh0bSwnwlijoDEt8mHWCB6ZSU2 HWCG+ExS4uCKGywTGMVmIflnFsI/s5D8s4CReRWjaGpBckFxUnqRsV5xYm5xaV66XnJ+7iZG SHro38F494D1IcZkoI0TmaVEk/OB6SWvJN7Q2MzIwtTE1NjI3NKMNGElcd77D5OChATSE0tS s1NTC1KL4otKc1KLDzEycXBKNTAafinwmzHZyuB5/qt4uaOin3Yo+umf2+ngyljqLTP3VBaP oaW8wk6dJy+PB8+Ytiim/tmChi6p+XKPeq0+MO5Z9KrF9faTtgmHNi295vXktO5Rf1Yf9jfu nQdvTwu77+7odJePdUPO4oh1wks4IiJ8FjzgMD8fNsWt+E+13LreBRumMHvXZbxUYinOSDTU Yi4qTgQA43KyQyUDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrPKsWRmVeSWpSXmKPExsVy+t9jQd3HTzKDDVbtZrW4te4cq0XvuZNM FvOPAFlXvr5ns+h/s5DV4tyrlYwWk+5PYLF4ce8ii0XvgqtsFmeb3rBbdE5cwm4x4/w+Joul 1y8yWUyYvpbFonXvEXaLTx8XsljMmPySzeLnrnksDkIea+atYfS43NfL5LFz1l12j5XLv7B5 zO6YyeqxaVUnm8f2bw9YPe53H2fy6P9r4NG3ZRWjx+dNcgHcUQ2MNhmpiSmpRQqpecn5KZl5 6bZK3sHxzvGmZgaGuoaWFuZKCnmJuam2Si4+AbpumTlAvykplCXmlAKFAhKLi5X07TBNCA1x 07WAaYzQ9Q0JgusxMkADCesYM161f2IvWCxZcXLxFOYGxndCXYycHBICJhLLZm1jh7DFJC7c W8/WxcjFISQwnVHi7PKTLCAJXgFBiR+T7wHZHBzMAvISRy5lg4SZBdQlJs1bxAxR38ok0Xrg CzNIgk1AU+L5xx2sILaIgKlEx6SlLCBFzAJLmCX2z37ADuIIC/QwSvSd/AO2mkVAVWLv5cnM ENucJVZcusMMsk1CQEFiziQbkDCngIvEiw8fGUFsIaCSi2tOskxgFJiF5L5ZCPfNQnLfAkbm VYyiqQXJBcVJ6bmGesWJucWleel6yfm5mxjByeeZ1A7GlQ0WhxgFOBiVeHgt3mYEC7EmlhVX 5h5ilOBgVhLh3XUxM1iINyWxsiq1KD++qDQntfgQYzLQ3ROZpUST84GJMa8k3tDYxMzI0sjM 2MTc2Jg0YSVx3gOt1oFCAumJJanZqakFqUUwW5g4OKUaGCdv85Cawr/jV0ZWe2KUX/8nhyXv C1e9WDMp6Vdfnpnv1OVHCgrCq8RiwhqOO/fnTFTeddXUJEv83YHtbalKwSW7F82qmz8nTV9z z1zTKTIW2x/2pAXsuFzx7sjE/G+L3PLObvB8PO1KQ8JjFga9GUfu8EaecwhxNPvaxDSX33YH v25CpJZxoxJLcUaioRZzUXEiAFTwPV+CAwAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch adds DT bindings for command mode display timing. Signed-off-by: YoungJun Cho Acked-by: Inki Dae Acked-by: Kyungmin Park --- .../bindings/video/cmdmode-display-timing.txt | 64 ++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/cmdmode-display-timing.txt diff --git a/Documentation/devicetree/bindings/video/cmdmode-display-timing.txt b/Documentation/devicetree/bindings/video/cmdmode-display-timing.txt new file mode 100644 index 0000000..7cedfe4 --- /dev/null +++ b/Documentation/devicetree/bindings/video/cmdmode-display-timing.txt @@ -0,0 +1,64 @@ +cmdmode-display-timing bindings +=================================== + +cmdmode-display-timings node +-------------------------------- + +required properties: + - none + +optional properties: + - native-mode: The native mode for the display, in case multiple modes are + provided. When omitted, assume the first node is the native. + +timing subnode +-------------- + +required properties: + - clock-frequency: display clock in Hz + - hactive, vactive: display resolution + - cs-setup: clock cycles for the active period of address signal is enabled + until chip select is enabled. + - wr-setup: clock cycles for the active period of CS signal is enabled until + write signal is enabled. + - wr-active: clock cycles for the active period of CS is enabled. + - wr-hold: clock cycles for the active period of CS is disabled until write + signal is disabled. + +optional properties: + +There are different ways of describing the capabilities of a display. The +devicetree representation corresponds to the one commonly found in datasheets +for displays. If a display supports multiple signal timings, the native-mode +can be specified. + +The parameters are defined as: + + VCLK(internal) __|¯¯¯¯¯¯|_____|¯¯¯¯¯¯|_____|¯¯¯¯¯¯|_____|¯¯¯¯¯¯|_____|¯¯ + : : : : : + Address Output --:| : : : + Chip Select ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯|____________:____________:____________|¯¯ + | WR-SETUP+1 | | WR-HOLD+1 | + |<---------->| |<---------->| + Write Enable ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯|____________|¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ + | WR-ACTIVE+1| + |<---------->| + Video Data ------------------------------ + +Example: + + cmdmode-display-timings { + native-mode = <&timing0>; + timing0: 1080p24 { + /* 1920x1080p24 */ + clock-frequency = <52000000>; + hactive = <1920>; + vactive = <1080>; + cs-setup = <0>; + wr-setup = <0>; + wr-active = <1>; + wr-hold = <0>; + }; + };