From patchwork Wed Sep 27 16:42:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 145481 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:cae8:0:b0:403:3b70:6f57 with SMTP id r8csp2770416vqu; Wed, 27 Sep 2023 10:05:13 -0700 (PDT) X-Google-Smtp-Source: AGHT+IErIo7CqfLmz3duAWQccjiQAHrbefIfNN9ZG6tMxfzoeD1nqrZ9nejd7xjLrJThRl0qwicm X-Received: by 2002:a17:902:d2c9:b0:1c3:e2eb:f79d with SMTP id n9-20020a170902d2c900b001c3e2ebf79dmr11532813plc.8.1695834312783; Wed, 27 Sep 2023 10:05:12 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1695834312; cv=none; d=google.com; s=arc-20160816; b=EsuduGwZ6zVv37KP4gFeTkIhgN0VH7ipGCPyJKAgv6Ex5oMrc6l0IKs7SsJsB4dkMK Y888pYBa0cVPSYc+Xh8RIgb6B0TEyysnA09q2pCx0ca38e2zQl5aP6Y8qN6+/7qUNTJ3 bmShgMmXAB+a8OdK7RzkkQrb8x5CmxuHP2t2WONEcrFRU6W+kK/b0/jfvJmIkGN/HC+P d0LSnv+w3VLTpueppF0iQsig6sK0nS5Gp+lnqUkyB8zf52ut0T5+ech+uQdVFYQpNPiq PgVTqNatFweVrEA5wKbF6q/1e8WaWUPnhYDmrd4b20CBlGptPtAEahrnchkGcZ+5lie6 x+ew== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=4IEDXa4FytP4wXDVnIVUv/n7+wyXNdt7qlLYRDfXDh0=; fh=l0j/sX16vfpi/oZ3zuhFuzonJ7kkautdUXCrc1sjEAM=; b=xwcDL/Egvs5M1Z67GcqEQTz2uikulS7c9mQuBq5nAYmpqG1VlUV9UXmSjbFEwuMxWp hZmryvE8aAwf2h8Wk+DWhq5pKruwHKF9UljiVDZklE11kJNuzlwJ9sOC9sY4I43gXWUm 0ZzxzaXdvIkutFQ+vY+gYP4CbzO4Li4/LYhgWYZWpOeEeJR1BVetG6e4YVS7dRtcpzej ESFs0xknqykFxA0o5mwBUISrfrI6vEXUHkL6zjtlARilI3z+kqRGkF173kGxWum0ddFh jvirAZV29w1+BmkwZdGPY0/SAK6GX0siHAX+2sGMAerM78+mLuk73NfXc0/FSMF0udAP BlOg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=OS6UKmOI; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from howler.vger.email (howler.vger.email. [2620:137:e000::3:4]) by mx.google.com with ESMTPS id ik12-20020a170902ab0c00b001c60c5bbff2si9354098plb.201.2023.09.27.10.05.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Sep 2023 10:05:12 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) client-ip=2620:137:e000::3:4; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=OS6UKmOI; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by howler.vger.email (Postfix) with ESMTP id 444EF8246962; Wed, 27 Sep 2023 09:54:43 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at howler.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229527AbjI0Qyb (ORCPT + 19 others); Wed, 27 Sep 2023 12:54:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229437AbjI0Qy3 (ORCPT ); Wed, 27 Sep 2023 12:54:29 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19DD591 for ; Wed, 27 Sep 2023 09:54:28 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3815BC433C8; Wed, 27 Sep 2023 16:54:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695833667; bh=OWCmuPebvFogsaXQ+UWO53mmD8IYPbNXCEUOxHi0SX4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OS6UKmOIJ/EdftafGfIt8QW4UBwispRhzODgAANJ7P8uch/3it1bBEZWsLLigHDWD zyjsBBapu3BDfr6Iszc4lUfcX1l5hwuHHagsjSiY25YT71V0mX53itbjZjYG/UDCCH /h/y7TOD7R6dV+WE6mPfpwEMhgEOeGshLQ9CY6fIV+I9P5o+MCjXD4SE6rWu5cAMXk rhJFkRpJbU8XJrjlVEKIfKjuUzYluje1/CETC0vP6ILLDEPXvolfdsHdGPGOI2H1AD JWNOai2dCtkM+pSx3elaxzamyUpsoNNdG36u7/As+zMrOt9a/ECzE9PQgOwCesCXrg YJH3WiMIm7j9A== From: Jisheng Zhang To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thinh Nguyen Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Guo Ren , Fu Wei , linux-riscv@lists.infradead.org Subject: [PATCH 1/2] dt-bindings: usb: Add T-HEAD TH1520 USB controller Date: Thu, 28 Sep 2023 00:42:21 +0800 Message-Id: <20230927164222.3505-2-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230927164222.3505-1-jszhang@kernel.org> References: <20230927164222.3505-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Wed, 27 Sep 2023 09:54:43 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778211160404183357 X-GMAIL-MSGID: 1778211160404183357 T-HEAD TH1520 platform's USB has a wrapper module around the DesignWare USB3 DRD controller. Add binding information doc for it. Signed-off-by: Jisheng Zhang --- .../bindings/usb/thead,th1520-usb.yaml | 73 +++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/thead,th1520-usb.yaml diff --git a/Documentation/devicetree/bindings/usb/thead,th1520-usb.yaml b/Documentation/devicetree/bindings/usb/thead,th1520-usb.yaml new file mode 100644 index 000000000000..afb618eb5013 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/thead,th1520-usb.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/thead,th1520-usb.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: T-HEAD TH1520 DWC3 USB Controller Glue + +maintainers: + - Jisheng Zhang + +properties: + compatible: + const: thead,th1520-usb + + reg: + maxItems: 1 + + clocks: + maxItems: 4 + + clock-names: + items: + - const: ref + - const: bus_early + - const: phy + - const: suspend + + ranges: true + + '#address-cells': + enum: [ 1, 2 ] + + '#size-cells': + enum: [ 1, 2 ] + +# Required child node: + +patternProperties: + "^usb@[0-9a-f]+$": + $ref: snps,dwc3.yaml# + +required: + - compatible + - reg + - clocks + - clock-names + - ranges + +additionalProperties: false + +examples: + - | + + usb { + compatible = "thead,th1520-usb"; + reg = <0xec03f000 0x1000>; + clocks = <&clk 1>, + <&clk 2>, + <&clk 3>, + <&clk 4>; + clock-names = "ref", "bus_early", "phy", "suspend"; + ranges; + #address-cells = <1>; + #size-cells = <1>; + + usb@e7040000 { + compatible = "snps,dwc3"; + reg = <0xe7040000 0x10000>; + interrupts = <68>; + dr_mode = "host"; + }; + }; From patchwork Wed Sep 27 16:42:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 145479 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:cae8:0:b0:403:3b70:6f57 with SMTP id r8csp2767263vqu; Wed, 27 Sep 2023 10:01:25 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGjlUMMp40YLixLstrgp6ntqIo+4/4r2kSz6IXzh5LSV0zjgQuBZhDMD9y+1wAQRLEr/3e0 X-Received: by 2002:a17:90a:a882:b0:277:183e:185a with SMTP id h2-20020a17090aa88200b00277183e185amr2102727pjq.3.1695834084683; Wed, 27 Sep 2023 10:01:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1695834084; cv=none; d=google.com; s=arc-20160816; b=hghywyay2qm33aKfQajVjvTVHudq3HxkzK9fr/KTdeqXMni30g8pBImJr4bMuaQaCO 2H3Eyud2HayuXZQ01WX5+jHK6kZWbs9WuOjUqyXicMjxP5UvJyiQHK0Mpg+n8av5FyZE mWcfLHuMYMuZ9l6sSQ/6NSZDsdeZZEWs47kfqeG5MSkuSSFuqPiN83rtUPoy6IsmgwES /Gxicgyo4SCjLYPCGtm2AgQA2LPpvymN5aQJ13rkfdi0EYuQmvU6VpWwNjNDMXn+Pd9V UMmCo17ONpUERAzkuILPl4NlnfXhWV8S2fEUKSSzZhaLSd40ducK6b40nYmf0pJuPlWU /JKQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=W1iQ1Spe5JorteFJbZ6/LqMaoiU0qJOLDXa+Vn35s2E=; fh=l0j/sX16vfpi/oZ3zuhFuzonJ7kkautdUXCrc1sjEAM=; b=Vt3FzkmCNiCMfbkOHKdsPBakRN8nphHM5SWf0PEWcT+qcF0UholroVianlhSaEvUEr TsiTsDYq8Bml9A3qOwz/20t95suni6a5Buiq4g1eCUbTv/3Z4w+s3gvSrDIClPsParHS L1GGhhH6m4YnVU120ObpmxzQsvDxeMD9krZSFy43MOKG712kRIqmMFr90Jeofcc+JAbQ BNXxAQ4ul46f64T+66mNxhzQfdLT59RqtUZA+BpstGVJ4D/GYMw3vjF39+UdjHdkrxoq I8DO+Ei/VXH28LxTgLoOX3H0Ura036NxoWUuWNXghCh9jkq24kd8LZyxYctGBteqPqYr yJSg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=dI0YrIfy; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from agentk.vger.email (agentk.vger.email. [23.128.96.32]) by mx.google.com with ESMTPS id z10-20020a17090abd8a00b002773a93aa5asi10225285pjr.38.2023.09.27.10.01.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Sep 2023 10:01:24 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) client-ip=23.128.96.32; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=dI0YrIfy; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by agentk.vger.email (Postfix) with ESMTP id 709388027A09; Wed, 27 Sep 2023 09:54:58 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at agentk.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229539AbjI0Qyd (ORCPT + 19 others); Wed, 27 Sep 2023 12:54:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229533AbjI0Qyb (ORCPT ); Wed, 27 Sep 2023 12:54:31 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A05D8DD for ; Wed, 27 Sep 2023 09:54:30 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27B43C433CC; Wed, 27 Sep 2023 16:54:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695833670; bh=pfq+SQ5jW2o9nXakRgvSgmaqn3orOhnaopBx/4PGPjM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dI0YrIfy3jXCRX8+l+D2FjpPKNs3YV7+hSTiGlNtpGtV7CQS6bd586Pt3ZyMoUV7i jICgsB1K+tZwYyfcHX3fcqS+EjQyqfKN56lB5rxmhPJY1u5C5yqAJzH2Y+Sh7GcCnA Wsjh/mt9gs90sacL9QsJdnhEDORTDgAeSQlZkhrVAQHBgxfLa5jj1XVu8ZHqzgIdZB zk0Ns+qhq+xNHB0bKRIrrb335lwvV5BvXwFSnl0oaVCz5cqX0mwtAQkzs+FzxjX+2m gh/D3N+yoUM4HM2so+vq6e9HXDseLImFHeWW1gISm9LFOO+4RJWBhgwJur/o7zClzJ ononDWm9zlqqw== From: Jisheng Zhang To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thinh Nguyen Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Guo Ren , Fu Wei , linux-riscv@lists.infradead.org Subject: [PATCH 2/2] usb: dwc3: add T-HEAD TH1520 usb driver Date: Thu, 28 Sep 2023 00:42:22 +0800 Message-Id: <20230927164222.3505-3-jszhang@kernel.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230927164222.3505-1-jszhang@kernel.org> References: <20230927164222.3505-1-jszhang@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Wed, 27 Sep 2023 09:54:58 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778210920913176154 X-GMAIL-MSGID: 1778210920913176154 Adds TH1520 Glue layer to support USB controller on T-HEAD TH1520 SoC. There is a DesignWare USB3 DRD core in TH1520 SoCs, the dwc3 core is the child of this USB wrapper module device. Signed-off-by: Jisheng Zhang --- MAINTAINERS | 1 + drivers/usb/dwc3/Kconfig | 9 +++ drivers/usb/dwc3/Makefile | 1 + drivers/usb/dwc3/dwc3-thead.c | 119 ++++++++++++++++++++++++++++++++++ 4 files changed, 130 insertions(+) create mode 100644 drivers/usb/dwc3/dwc3-thead.c diff --git a/MAINTAINERS b/MAINTAINERS index 90f13281d297..d55e40060c46 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18481,6 +18481,7 @@ M: Fu Wei L: linux-riscv@lists.infradead.org S: Maintained F: arch/riscv/boot/dts/thead/ +F: drivers/usb/dwc3/dwc3-thead.c RNBD BLOCK DRIVERS M: Md. Haris Iqbal diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 98efcbb76c88..1b02f4f55b47 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -178,4 +178,13 @@ config USB_DWC3_OCTEON Only the host mode is currently supported. Say 'Y' or 'M' here if you have one such device. +config USB_DWC3_THEAD + tristate "T-HEAD Platform" + depends on ARCH_THEAD || COMPILE_TEST + default USB_DWC3 + help + Support T-HEAD platform with DesignWare Core USB3 IP. + Only the host mode is currently supported. + Say 'Y' or 'M' here if you have one such device. + endif diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index fe1493d4bbe5..9523a51dd279 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -55,3 +55,4 @@ obj-$(CONFIG_USB_DWC3_QCOM) += dwc3-qcom.o obj-$(CONFIG_USB_DWC3_IMX8MP) += dwc3-imx8mp.o obj-$(CONFIG_USB_DWC3_XILINX) += dwc3-xilinx.o obj-$(CONFIG_USB_DWC3_OCTEON) += dwc3-octeon.o +obj-$(CONFIG_USB_DWC3_THEAD) += dwc3-thead.o diff --git a/drivers/usb/dwc3/dwc3-thead.c b/drivers/usb/dwc3/dwc3-thead.c new file mode 100644 index 000000000000..999b1e319c72 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-thead.c @@ -0,0 +1,119 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * dwc3-thead.c - T-HEAD platform specific glue layer + * + * Inspired by dwc3-of-simple.c + * + * Copyright (C) 2021 Alibaba Group Holding Limited. + * Copyright (C) 2023 Jisheng Zhang + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "core.h" + +#define USB_SSP_EN 0x34 +#define REF_SSP_EN BIT(0) +#define USB_SYS 0x3c +#define COMMONONN BIT(0) + +#define USB3_DRD_SWRST 0x14 +#define USB3_DRD_PRST BIT(0) +#define USB3_DRD_PHYRST BIT(1) +#define USB3_DRD_VCCRST BIT(2) +#define USB3_DRD_RSTMASK (USB3_DRD_PRST | USB3_DRD_PHYRST | USB3_DRD_VCCRST) + +struct dwc3_thead { + void __iomem *base; + struct regmap *misc_sysreg; + struct regulator *vbus; +}; + +static void dwc3_thead_optimize_power(struct dwc3_thead *thead) +{ + u32 val; + + /* config usb top within USB ctrl & PHY reset */ + regmap_update_bits(thead->misc_sysreg, USB3_DRD_SWRST, + USB3_DRD_RSTMASK, USB3_DRD_PRST); + + /* + * dwc reg also need to be configed to save power + * 1. set USB_SYS[COMMONONN] + * 2. set DWC3_GCTL[SOFITPSYNC](done by core.c) + * 3. set GUSB3PIPECTL[SUSPENDEN] (done by core.c) + */ + val = readl(thead->base + USB_SYS); + val |= COMMONONN; + writel(val, thead->base + USB_SYS); + val = readl(thead->base + USB_SSP_EN); + val |= REF_SSP_EN; + writel(val, thead->base + USB_SSP_EN); + + regmap_update_bits(thead->misc_sysreg, USB3_DRD_SWRST, + USB3_DRD_RSTMASK, USB3_DRD_RSTMASK); +} + +static int dwc3_thead_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct dwc3_thead *thead; + int ret; + + thead = devm_kzalloc(&pdev->dev, sizeof(*thead), GFP_KERNEL); + if (!thead) + return -ENOMEM; + + platform_set_drvdata(pdev, thead); + + ret = devm_regulator_get_enable_optional(dev, "vbus"); + if (ret < 0 && ret != -ENODEV) + return ret; + + thead->misc_sysreg = syscon_regmap_lookup_by_phandle(np, "thead,misc-sysreg"); + if (IS_ERR(thead->misc_sysreg)) + return PTR_ERR(thead->misc_sysreg); + + thead->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(thead->base)) + return PTR_ERR(thead->base); + + dwc3_thead_optimize_power(thead); + + return of_platform_populate(np, NULL, NULL, dev); +} + +static void dwc3_thead_remove(struct platform_device *pdev) +{ + of_platform_depopulate(&pdev->dev); +} + +static const struct of_device_id dwc3_thead_of_match[] = { + { .compatible = "thead,th1520-usb" }, + { }, +}; +MODULE_DEVICE_TABLE(of, dwc3_thead_of_match); + +static struct platform_driver dwc3_thead_driver = { + .probe = dwc3_thead_probe, + .remove_new = dwc3_thead_remove, + .driver = { + .name = "dwc3-thead", + .of_match_table = dwc3_thead_of_match, + }, +}; +module_platform_driver(dwc3_thead_driver); + +MODULE_ALIAS("platform:dwc3-thead"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("DesignWare DWC3 T-HEAD Glue Driver"); +MODULE_AUTHOR("Jisheng Zhang ");