From patchwork Fri May 13 09:52:35 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Wu X-Patchwork-Id: 9089831 Return-Path: X-Original-To: patchwork-linux-rockchip@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A0803BF29F for ; Fri, 13 May 2016 09:53:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 857EE20204 for ; Fri, 13 May 2016 09:53:40 +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 AC93E201F2 for ; Fri, 13 May 2016 09:53:39 +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 1b19mt-0002ib-4o; Fri, 13 May 2016 09:53:39 +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 1b19mq-0002gu-Rq for linux-rockchip@lists.infradead.org; Fri, 13 May 2016 09:53:37 +0000 Received: from william.wu?rock-chips.com (unknown [192.168.167.228]) by regular1.263xmail.com (Postfix) with SMTP id 18A9EDBD6; Fri, 13 May 2016 17:53:11 +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 EBBBE3E53; Fri, 13 May 2016 17:53:08 +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: <8c04f7db0504ed00fedb934bcf129cd6> 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 3464K0PJT8; Fri, 13 May 2016 17:53:10 +0800 (CST) From: William Wu To: gregkh@linuxfoundation.org, balbi@kernel.org, heiko@sntech.de Subject: [PATCH v2 5/5] usb: dwc3: rockchip: add devicetree bindings documentation Date: Fri, 13 May 2016 17:52:35 +0800 Message-Id: <1463133155-20047-1-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-20160513_025337_416188_F4846833 X-CRM114-Status: UNSURE ( 8.96 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.6 (--) 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, frank.wang@rock-chips.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-Spam-Status: No, score=-5.6 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 This patch documents the device tree documentation required for Rockchip USB3.0 core wrapper consist of USB3.0 IP from Synopsys. It could operate in device mode (SS, HS, FS) and host mode (SS, HS, FS, LS). Signed-off-by: William Wu --- Changes in v2: - add rockchip,dwc3.txt to Documentation/devicetree/bindings/ (Felipe, Brian) .../devicetree/bindings/usb/rockchip,dwc3.txt | 45 ++++++++++++++++++++++ 1 file changed, 45 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..10303d9 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt @@ -0,0 +1,45 @@ +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: + +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 { + compatible = "snps,dwc3"; + reg = <0x0 0xfe800000 0x0 0x100000>; + interrupts = ; + dr_mode = "otg"; + status = "disabled"; + }; + };