From patchwork Thu Jun 2 12:34:56 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Wu X-Patchwork-Id: 9149893 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 109E96074E for ; Thu, 2 Jun 2016 12:36:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0167525D97 for ; Thu, 2 Jun 2016 12:36:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EA44F27D45; Thu, 2 Jun 2016 12:36:23 +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=-2.5 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, URIBL_BLACK autolearn=unavailable version=3.3.1 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.wl.linuxfoundation.org (Postfix) with ESMTPS id 9105325D97 for ; Thu, 2 Jun 2016 12:36:23 +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 1b8RrL-0004vm-8r; Thu, 02 Jun 2016 12:36:23 +0000 Received: from regular1.263xmail.com ([211.150.99.137]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1b8RrJ-0004hX-2G for linux-rockchip@lists.infradead.org; Thu, 02 Jun 2016 12:36:22 +0000 Received: from william.wu?rock-chips.com (unknown [192.168.167.153]) by regular1.263xmail.com (Postfix) with SMTP id D04F2D9F9; Thu, 2 Jun 2016 20:35:55 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id C746C2959B; Thu, 2 Jun 2016 20:35:49 +0800 (CST) X-RL-SENDER: william.wu@rock-chips.com X-FST-TO: gregkh@linuxfoundation.org X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: william.wu@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: wulf@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 21496O1I9FN; Thu, 02 Jun 2016 20:35:51 +0800 (CST) From: William Wu To: gregkh@linuxfoundation.org, balbi@kernel.org, heiko@sntech.de Subject: [PATCH v4 5/5] usb: dwc3: rockchip: add devicetree bindings documentation Date: Thu, 2 Jun 2016 20:34:56 +0800 Message-Id: <1464870896-25612-1-git-send-email-william.wu@rock-chips.com> X-Mailer: git-send-email 1.9.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160602_053621_661663_9EFB60CB X-CRM114-Status: UNSURE ( 8.40 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: huangtao@rock-chips.com, sergei.shtylyov@cogentembedded.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, kever.yang@rock-chips.com, dianders@google.com, linux-rockchip@lists.infradead.org, eddie.cai@rock-chips.com, William Wu , briannorris@google.com, John.Youn@synopsys.com MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds the devicetree documentation required for Rockchip USB3.0 core wrapper consisting of USB3.0 IP from Synopsys. It supports DRD mode, and could operate in device mode (SS, HS, FS) and host mode (SS, HS, FS, LS). Signed-off-by: William Wu --- Changes in v4: - modify commit log, and add phy documentation location (Sergei) Changes in v3: - add dwc3 address (balbi) Changes in v2: - add rockchip,dwc3.txt to Documentation/devicetree/bindings/ (balbi, Brian) .../devicetree/bindings/usb/rockchip,dwc3.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/rockchip,dwc3.txt diff --git a/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt b/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt new file mode 100644 index 0000000..0edf013 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt @@ -0,0 +1,46 @@ +Rockchip SuperSpeed DWC3 USB SoC controller + +Required properties: +- compatible: should contain "rockchip,dwc3" +- clocks: A list of phandle + clock-specifier pairs for the + clocks listed in clock-names +- clock-names: Should contain the following: + "clk_usb3otg0_ref" Controller reference clk + "clk_usb3otg0_suspend"Controller suspend clk, can use 24 MHz or 32 KHz + "aclk_usb3" Master/Core clock, have to be >= 62.5 MHz for SS operation + + +Optional clocks: + "aclk_usb3otg0" Aclk for specific usb controller clock. + "aclk_usb3_rksoc_axi_perf" USB AXI perf clock. Not present on all platforms. + "aclk_usb3_grf" USB grf clock. Not present on all platforms. + +Required child node: +A child node must exist to represent the core DWC3 IP block. The name of +the node is not important. The content of the node is defined in dwc3.txt. + +Phy documentation is provided in the following places: +Documentation/devicetree/bindings/phy/rockchip,dwc3-usb-phy.txt + +Example device nodes: + + usbdrd3_0: usb@fe800000 { + compatible = "rockchip,dwc3"; + clocks = <&cru SCLK_USB3OTG0_REF>, <&cru SCLK_USB3OTG0_SUSPEND>, + <&cru ACLK_USB3>, <&cru ACLK_USB3OTG0>, + <&cru ACLK_USB3_RKSOC_AXI_PERF>, <&cru ACLK_USB3_GRF>; + clock-names = "clk_usb3otg0_ref", "clk_usb3otg0_suspend", + "aclk_usb3", "aclk_usb3otg0", + "aclk_usb3_rksoc_axi_perf", "aclk_usb3_grf"; + #address-cells = <2>; + #size-cells = <2>; + ranges; + status = "disabled"; + usbdrd_dwc3_0: dwc3@fe800000 { + compatible = "snps,dwc3"; + reg = <0x0 0xfe800000 0x0 0x100000>; + interrupts = ; + dr_mode = "otg"; + status = "disabled"; + }; + };