From patchwork Tue Mar 24 10:20:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 11454971 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5D09D913 for ; Tue, 24 Mar 2020 10:20:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F82220870 for ; Tue, 24 Mar 2020 10:20:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="VJDW48n7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727275AbgCXKUl (ORCPT ); Tue, 24 Mar 2020 06:20:41 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:39669 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727120AbgCXKUl (ORCPT ); Tue, 24 Mar 2020 06:20:41 -0400 Received: by mail-wr1-f66.google.com with SMTP id p10so8274397wrt.6 for ; Tue, 24 Mar 2020 03:20:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=RHjJI7aShrh91OoV00QHF3f8tRyA7jklYuLyoaLdZpU=; b=VJDW48n7k0ddcp7+Y1+gejwqC9PsCLrSpTZ/9jdmEwACaw5iwrnqY806ZRC+0OlwO9 3oC8uo/6CWdGg+WAI7bBQjVzQPiPbD1gJXoVYQzvIWBqoKIC7qs0YkR5FtIlMd4ZH2b9 hMdrR/e2DLI3EPdIi7aTE21K50ivfVFcRs/B2/NcPsJAr8QRdAS0h6PIQ3X9RpKu54/c YFCeYN464ihgX9YzRe/YLyMSIIdXkA667q6ZD40Yh7ra5keHqkPffOV7DjDwW9Uiw2kb 6ExvPUJv7i4DwgeoJGoKN88gGVoxBWoJtTRDlwDFJ3etJaGoP0zemtbE81+TExeKzoQS wSlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=RHjJI7aShrh91OoV00QHF3f8tRyA7jklYuLyoaLdZpU=; b=U7n2tXAr8cPEIUr8rwiehy2HsIlviFJgcEKU3WDhiQduR8PSFSmIlEXnNMazKll3Uz KvYpHOJfW9Gdk8+eCKRytEv970AgmgWBLn1fpdKQzkDgKjymfw2OeVB6H8i6aFnEc53B 68UQ+MsebC86/24azQWez/t3mccqJHA62wiO5ENInNcbTfc34y4yXvaDyRdxrVRvY8CT dbxJNSHGWAGsfnFOM8msdTHjNqL/kPudAhKoX0O8g9GaLt4QMx8UwZEQMoQz4le6XB6H v+8R4W661XLQb3ydWUdw5a8L7lWWT0HYYt+sSYjhuAhegcBS/f1Gdsfkj+FYx3ctlYI7 fGig== X-Gm-Message-State: ANhLgQ03yt4KXhEGeHekdVndKwagaYJTI24zD9xehT1O0FB34i3+i6Nw kwT9mI1uFyWcE0Sz9SC8Vpmz7g== X-Google-Smtp-Source: ADFU+vumN7anU9Np/hM8X3RBvL+hlj4hyYLEch8wVFiIMu+fM9wkQYbSGMWshJXNe6Txlxu/iEWbQg== X-Received: by 2002:adf:efc9:: with SMTP id i9mr15183022wrp.23.1585045238251; Tue, 24 Mar 2020 03:20:38 -0700 (PDT) Received: from bender.baylibre.local ([2a01:e35:2ec0:82b0:5c5f:613e:f775:b6a2]) by smtp.gmail.com with ESMTPSA id h5sm2879527wro.83.2020.03.24.03.20.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 03:20:37 -0700 (PDT) From: Neil Armstrong To: kishon@ti.com, balbi@kernel.org, khilman@baylibre.com, martin.blumenstingl@googlemail.com Cc: Neil Armstrong , linux-amlogic@lists.infradead.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 00/13] usb: dwc3: meson: add OTG support for GXL/GXM Date: Tue, 24 Mar 2020 11:20:17 +0100 Message-Id: <20200324102030.31000-1-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The USB support was initialy done with a set of PHYs and dwc3-of-simple because the architecture of the USB complex was not understood correctly at the time (and proper documentation was missing...). But with the G12A family, the USB complex was correctly understood and implemented correctly. But seems the G12A architecture was derived for the GXL USB architecture, with minor differences and looks we can share most of the USB DWC3 glue driver. This patchset refactors and adds callbacks to handle the architecture difference while keeping the main code shared. The main difference is that on GXL/GXM the USB2 PHY control registers are mixed with the PHY registers (we already handle correctly), and the GLUE registers are allmost (99%) the same as G12A. But, the GXL/GXM HW is buggy, here are the quirks : - for the DWC2 controller to reset correctly, the GLUE mux must be switched to peripheral when the DWC2 controlle probes. For now it's handled by simply switching to device when probing the subnodes, but it may be not enough - when manually switching from Host to Device when the USB port is not populated (should not happen with proper Micro-USB/USB-C OTG switch), it makes the DWC3 to crash. The only way to avoid that is to use the Host Disconnect bit to disconnect the DWC3 controller from the port, but we can't recover the Host functionnality unless resetting the DWC3 controller. This bit is set when only manual switch is done, and a warning is printed on manual switching. The patches 1-8 should be applied first, then either waiting the next release or if the usb maintainer can provide us a stable tag, we can use it to merge the DT and bindings. Martin Blumenstingl (4): arm64: dts: amlogic: use the new USB control driver for GXL and GXM phy: amlogic: meson-gxl-usb3: remove code for non-existing PHY usb: dwc3: of-simple: remove Amlogic GXL and AXG compatibles dt-bindings: usb: dwc3: remove old DWC3 wrapper Neil Armstrong (9): dt-bindings: usb: amlogic,meson-g12a-usb-ctrl: add the Amlogic GXL and GXM Families USB Glue Bindings usb: dwc3: meson-g12a: specify phy names in soc data usb: dwc3: meson-g12a: handle the phy and glue registers separately usb: dwc3: meson-g12a: get the reset as shared usb: dwc3: meson-g12a: refactor usb2 phy init usb: dwc3: meson-g12a: refactor usb init usb: dwc3: meson-g12a: support the GXL/GXM DWC3 host phy disconnect usb: dwc3: meson-g12a: add support for GXL and GXM SoCs doc: dt: bindings: usb: dwc3: remove amlogic compatible entries .../bindings/phy/meson-gxl-usb3-phy.txt | 31 -- .../devicetree/bindings/usb/amlogic,dwc3.txt | 42 -- .../usb/amlogic,meson-g12a-usb-ctrl.yaml | 21 + .../devicetree/bindings/usb/dwc3.txt | 2 - .../dts/amlogic/meson-gx-libretech-pc.dtsi | 2 +- .../boot/dts/amlogic/meson-gx-p23x-q20x.dtsi | 2 +- .../amlogic/meson-gxl-s805x-libretech-ac.dts | 3 +- .../boot/dts/amlogic/meson-gxl-s805x-p241.dts | 3 +- .../amlogic/meson-gxl-s905d-phicomm-n1.dts | 4 + .../boot/dts/amlogic/meson-gxl-s905w-p281.dts | 4 + .../dts/amlogic/meson-gxl-s905w-tx3-mini.dts | 4 + .../amlogic/meson-gxl-s905x-khadas-vim.dts | 4 + .../amlogic/meson-gxl-s905x-libretech-cc.dts | 7 +- .../amlogic/meson-gxl-s905x-nexbox-a95x.dts | 3 +- .../dts/amlogic/meson-gxl-s905x-p212.dtsi | 7 +- arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 45 +- .../dts/amlogic/meson-gxm-khadas-vim2.dts | 3 +- .../boot/dts/amlogic/meson-gxm-nexbox-a1.dts | 3 +- .../boot/dts/amlogic/meson-gxm-vega-s96.dts | 4 + arch/arm64/boot/dts/amlogic/meson-gxm.dtsi | 7 +- drivers/phy/amlogic/Kconfig | 12 - drivers/phy/amlogic/Makefile | 1 - drivers/phy/amlogic/phy-meson-gxl-usb3.c | 283 ------------ drivers/usb/dwc3/dwc3-meson-g12a.c | 407 ++++++++++++++---- drivers/usb/dwc3/dwc3-of-simple.c | 30 +- 25 files changed, 421 insertions(+), 513 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt delete mode 100644 Documentation/devicetree/bindings/usb/amlogic,dwc3.txt delete mode 100644 drivers/phy/amlogic/phy-meson-gxl-usb3.c