From patchwork Wed Nov 11 16:06:47 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liviu Dudau X-Patchwork-Id: 7596501 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id CE3259F2F7 for ; Wed, 11 Nov 2015 16:10:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id ED3F5206D6 for ; Wed, 11 Nov 2015 16:10:08 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0EAE920632 for ; Wed, 11 Nov 2015 16:10:08 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZwXwO-0001xv-CG; Wed, 11 Nov 2015 16:08:08 +0000 Received: from fw-tnat.cambridge.arm.com ([217.140.96.140] helo=cam-smtp0.cambridge.arm.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZwXvu-0001nc-Db for linux-arm-kernel@lists.infradead.org; Wed, 11 Nov 2015 16:07:40 +0000 Received: from e106497-lin.cambridge.arm.com (e106497-lin.cambridge.arm.com [10.2.131.158]) by cam-smtp0.cambridge.arm.com (8.13.8/8.13.8) with ESMTP id tABG6oq5012560; Wed, 11 Nov 2015 16:06:51 GMT From: Liviu Dudau To: David Airlie , Catalin Marinas , Will Deacon , Rob Herring , Sudeep Holla , Jon Medhurst , Mark Rutland , Ian Campbell , Kumar Gala Subject: [PATCH v2 1/4] drm: arm: Add DT bindings documentation for HDLCD driver. Date: Wed, 11 Nov 2015 16:06:47 +0000 Message-Id: <1447258010-2234-2-git-send-email-Liviu.Dudau@arm.com> X-Mailer: git-send-email 2.6.0 In-Reply-To: <1447258010-2234-1-git-send-email-Liviu.Dudau@arm.com> References: <1447258010-2234-1-git-send-email-Liviu.Dudau@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151111_080738_888253_FD7CB7F6 X-CRM114-Status: GOOD ( 14.36 ) X-Spam-Score: -4.5 (----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree , Pawel Moll , Arnd Bergmann , Greg Kroah-Hartman , Punit Agrawal , LKML , DRI devel , Olof Johansson , Andrew Morton , LAKML MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala Signed-off-by: Liviu Dudau --- .../devicetree/bindings/drm/arm/arm,hdlcd.txt | 74 ++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/drm/arm/arm,hdlcd.txt diff --git a/Documentation/devicetree/bindings/drm/arm/arm,hdlcd.txt b/Documentation/devicetree/bindings/drm/arm/arm,hdlcd.txt new file mode 100644 index 0000000..b57f1b9 --- /dev/null +++ b/Documentation/devicetree/bindings/drm/arm/arm,hdlcd.txt @@ -0,0 +1,74 @@ +ARM HDLCD + +This is a display controller found on several development platforms produced +by ARM Ltd and in more modern of its' Fast Models. The HDLCD is an RGB +streamer that reads the data from a framebuffer and sends it to a single +digital encoder (DVI or HDMI). + +Required properties: + - compatible: "arm,hdlcd" + - reg: Physical base address and length of the controller's registers. + If a second pair of address and length values is present this specifies + the presence of a DMA coherent memory area that the HDLCD can use as + framebuffer instead of normal CMA memory. + - interrupts: One interrupt used by the display controller to notify the + interrupt controller when any of the interrupt sources programmed in + the interrupt mask register have activated. + - clocks: A list of phandle + clock-specifier pairs, one for each + entry in 'clock-names'. + - clock-names: A list of clock names. For HDLD it should contain: + - "pxlclk" for the clock feeding the output PLL of the controller. + - port: The HDLCD connection to an encoder chip. The connection is modelled + using the OF graph bindings specified in Documentation/devicetree/bindings/graph.txt. + + +Example: + +/ { + ... + + hdlcd@2b000000 { + compatible = "arm,hdlcd"; + reg = <0 0x2b000000 0 0x1000>; + interrupts = ; + clocks = <&oscclk5>; + clock-names = "pxlclk"; + port { + hdlcd_output: endpoint@0 { + remote-endpoint = <&hdmi_enc_input>; + }; + }; + }; + + /* HDMI encoder on I2C bus */ + i2c@7ffa0000 { + .... + hdmi-transmitter@70 { + compatible = "....."; + reg = <0x70>; + video-ports = <0x234501>; + port@0 { + hdmi_enc_input: endpoint { + remote-endpoint = <&hdlcd_output>; + }; + + hdmi_enc_output: endpoint { + remote-endpoint = <&hdmi_1_port>; + }; + }; + }; + + }; + + hdmi1: connector@1 { + compatible = "hdmi-connector"; + type = "a"; + port { + hdmi_1_port: endpoint { + remote-endpoint = <&hdmi_enc_output>; + }; + }; + }; + + ... +};