From patchwork Thu May 26 15:15:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Zabel X-Patchwork-Id: 9137081 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A0C316075A for ; Thu, 26 May 2016 15:15:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9558B27D10 for ; Thu, 26 May 2016 15:15:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 89C7628294; Thu, 26 May 2016 15:15:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1FF5327D10 for ; Thu, 26 May 2016 15:15:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8BE186E81F; Thu, 26 May 2016 15:15:48 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6673A6E0D7 for ; Thu, 26 May 2016 15:15:31 +0000 (UTC) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7] helo=dude.pengutronix.de.) by metis.ext.pengutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1b5x0T-0003Bu-6i; Thu, 26 May 2016 17:15:29 +0200 From: Philipp Zabel To: dri-devel@lists.freedesktop.org Subject: [PATCH v16 1/4] dt-bindings: drm/mediatek: Add Mediatek HDMI dts binding Date: Thu, 26 May 2016 17:15:11 +0200 Message-Id: <1464275714-23257-2-git-send-email-p.zabel@pengutronix.de> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1464275714-23257-1-git-send-email-p.zabel@pengutronix.de> References: <1464275714-23257-1-git-send-email-p.zabel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: dri-devel@lists.freedesktop.org Cc: Mark Rutland , Stephen Boyd , Michael Turquette , Jie Qiu , Cawa Cheng , YT Shen , Yingjoe Chen , devicetree@vger.kernel.org, Jitao Shi , kernel@pengutronix.de, Pawel Moll , Ian Campbell , Rob Herring , linux-mediatek@lists.infradead.org, Matthias Brugger , Paul Bolle , Emil Velikov , Tomasz Figa , Kumar Gala X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add the device tree binding documentation for Mediatek HDMI, HDMI PHY and HDMI DDC devices. Signed-off-by: Philipp Zabel Acked-by: Rob Herring --- .../bindings/display/mediatek/mediatek,hdmi.txt | 148 +++++++++++++++++++++ 1 file changed, 148 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt new file mode 100644 index 0000000..7b12424 --- /dev/null +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt @@ -0,0 +1,148 @@ +Mediatek HDMI Encoder +===================== + +The Mediatek HDMI encoder can generate HDMI 1.4a or MHL 2.0 signals from +its parallel input. + +Required properties: +- compatible: Should be "mediatek,-hdmi". +- reg: Physical base address and length of the controller's registers +- interrupts: The interrupt signal from the function block. +- clocks: device clocks + See Documentation/devicetree/bindings/clock/clock-bindings.txt for details. +- clock-names: must contain "pixel", "pll", "bclk", and "spdif". +- phys: phandle link to the HDMI PHY node. + See Documentation/devicetree/bindings/phy/phy-bindings.txt for details. +- phy-names: must contain "hdmi" +- mediatek,syscon-hdmi: phandle link and register offset to the system + configuration registers. For mt8173 this must be offset 0x900 into the + MMSYS_CONFIG region: <&mmsys 0x900>. +- ports: A node containing input and output port nodes with endpoint + definitions as documented in Documentation/devicetree/bindings/graph.txt. +- port@0: The input port in the ports node should be connected to a DPI output + port. +- port@1: The output port in the ports node should be connected to the input + port of a connector node that contains a ddc-i2c-bus property, or to the + input port of an attached bridge chip, such as a SlimPort transmitter. + +HDMI CEC +======== + +The HDMI CEC controller handles hotplug detection and CEC communication. + +Required properties: +- compatible: Should be "mediatek,-cec" +- reg: Physical base address and length of the controller's registers +- interrupts: The interrupt signal from the function block. +- clocks: device clock + +HDMI DDC +======== + +The HDMI DDC i2c controller is used to interface with the HDMI DDC pins. +The Mediatek's I2C controller is used to interface with I2C devices. + +Required properties: +- compatible: Should be "mediatek,-hdmi-ddc" +- reg: Physical base address and length of the controller's registers +- clocks: device clock +- clock-names: Should be "ddc-i2c". + +HDMI PHY +======== + +The HDMI PHY serializes the HDMI encoder's three channel 10-bit parallel +output and drives the HDMI pads. + +Required properties: +- compatible: "mediatek,-hdmi-phy" +- reg: Physical base address and length of the module's registers +- clocks: PLL reference clock +- clock-names: must contain "pll_ref" +- clock-output-names: must be "hdmitx_dig_cts" on mt8173 +- #phy-cells: must be <0> +- #clock-cells: must be <0> + +Optional properties: +- mediatek,ibias: TX DRV bias current for <1.65Gbps, defaults to 0xa +- mediatek,ibias_up: TX DRV bias current for >1.65Gbps, defaults to 0x1c + +Example: + +cec: cec@10013000 { + compatible = "mediatek,mt8173-cec"; + reg = <0 0x10013000 0 0xbc>; + interrupts = ; + clocks = <&infracfg CLK_INFRA_CEC>; +}; + +hdmi_phy: hdmi-phy@10209100 { + compatible = "mediatek,mt8173-hdmi-phy"; + reg = <0 0x10209100 0 0x24>; + clocks = <&apmixedsys CLK_APMIXED_HDMI_REF>; + clock-names = "pll_ref"; + clock-output-names = "hdmitx_dig_cts"; + mediatek,ibias = <0xa>; + mediatek,ibias_up = <0x1c>; + #clock-cells = <0>; + #phy-cells = <0>; +}; + +hdmi_ddc0: i2c@11012000 { + compatible = "mediatek,mt8173-hdmi-ddc"; + reg = <0 0x11012000 0 0x1c>; + interrupts = ; + clocks = <&pericfg CLK_PERI_I2C5>; + clock-names = "ddc-i2c"; +}; + +hdmi0: hdmi@14025000 { + compatible = "mediatek,mt8173-hdmi"; + reg = <0 0x14025000 0 0x400>; + interrupts = ; + clocks = <&mmsys CLK_MM_HDMI_PIXEL>, + <&mmsys CLK_MM_HDMI_PLLCK>, + <&mmsys CLK_MM_HDMI_AUDIO>, + <&mmsys CLK_MM_HDMI_SPDIF>; + clock-names = "pixel", "pll", "bclk", "spdif"; + pinctrl-names = "default"; + pinctrl-0 = <&hdmi_pin>; + phys = <&hdmi_phy>; + phy-names = "hdmi"; + mediatek,syscon-hdmi = <&mmsys 0x900>; + assigned-clocks = <&topckgen CLK_TOP_HDMI_SEL>; + assigned-clock-parents = <&hdmi_phy>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + hdmi0_in: endpoint { + remote-endpoint = <&dpi0_out>; + }; + }; + + port@1 { + reg = <1>; + + hdmi0_out: endpoint { + remote-endpoint = <&hdmi_con_in>; + }; + }; + }; +}; + +connector { + compatible = "hdmi-connector"; + type = "a"; + ddc-i2c-bus = <&hdmiddc0>; + + port { + hdmi_con_in: endpoint { + remote-endpoint = <&hdmi0_out>; + }; + }; +};