From patchwork Tue Apr 6 09:26:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greentime Hu X-Patchwork-Id: 12184659 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2BD6C43460 for ; Tue, 6 Apr 2021 09:27:01 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 831B5613C4 for ; Tue, 6 Apr 2021 09:27:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 831B5613C4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To:From: Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=MudJCCpsqqUvBFSMl3rDYM1Zeq3NnfGxqI9N7UfMypA=; b=oCCvHs5eQi2Vhe nUcfSWffVQNx4gLHa/cCmpXttP8Xa/7Wh6zrp9eqC7PqbGVnHRMMpuYyeH/3TuFt55//8Cr6h+MLR dzMJlNW19/Ajox6ihZ7BKFNSrwzGwyDmQ4+AcIEfYVRlQf2zB6b0iqMo6kPte5G2rzPsXVp5vBPIv SjpWrarrJLeb5erBVNK9/sx1/0dRAE8oU2RSsTQXGAXq2FnxaM7AkUPR1HY9vh1YRTwN99OPgBUiJ BYDffYbMRKJWXcXyYQ+3bZkz9FDaJ19GSzJZ7Pl9eyYujnIJAIpSLMvF9s4bVUfc4O9AQkhiBc37R wifsIgUPwAgEFgkpPsyA==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lThyy-0020nP-JR; Tue, 06 Apr 2021 09:26:48 +0000 Received: from mail-pj1-x1030.google.com ([2607:f8b0:4864:20::1030]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lThyt-0020mY-KR for linux-riscv@lists.infradead.org; Tue, 06 Apr 2021 09:26:46 +0000 Received: by mail-pj1-x1030.google.com with SMTP id bg21so4538772pjb.0 for ; Tue, 06 Apr 2021 02:26:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=L9aauEj0ZznO9LzKslz62xYfWSRsY7rwUuiLDdRfB74=; b=fjWJDRbldFVlvO4zkZJQyJKIRAAbm80Vl9BjmTAzp94b2Gbj1V4ZMJvd+h2myJySEu Bn0hrzUlDR+MSaUMVED0H1qEVOgQCB2J5ofzTRRSdAXp/Uj1qUqkWtBIqaycypvIdVoD lGp4ouOgXnx9DWlnOOaMxWGjFbmQQ/J1XjPassnAs5RFWj5axewls+T+BBCl7cXIrOgy jJdbwez6Q/9ZLHZFNatV+BfDJeLiAyJn3AqIJB+wx4Tefk+d/OV2JijgfHF8dDkWuPcZ sfaaBvGxMDZpEWa3a59lxCPV7n/M28thc6yGsfjD/pWM04Dxeslmf7R9LJ4IwdNm+IR3 srOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=L9aauEj0ZznO9LzKslz62xYfWSRsY7rwUuiLDdRfB74=; b=OSRbMd2FGu8orZ2wWH/KBgbwFDktBAT0J3Rl+RmIUdovWEGUDjkBag67a1aBpmv4/H 59nWj+pBoGYo8qE6TipkLDMLNPpA27D63gPGY+/7r3rLCDHTvsGd/zjNc6GjLkjFUbU/ gVEk75ZRTu2LHp7PeQPDlMN2mkfbu0gfdv/8iBstJYMzjnnANMEWeYwm4Ay/UI9Edc5t F/VTeyjq/021w8pyX/zA5j3CzraC1Su3XaCCv7XJrVe9L4+NfAlejpFu7ylqAH74SrVw sJHovWV0PsxGaY3BeKx7XG7i5w480E/9cW9aPv5065EMu/sjhgycD/VQz83pFisFWvuL rk7w== X-Gm-Message-State: AOAM531ptFwIwbVkQhPUH5QZAw9G5/XhSDnwNrMFbhsAP06YoveEDYNF oTQ5u7jas4elSA4dIzR+Su5t5A== X-Google-Smtp-Source: ABdhPJwg9APLF5QDj3ZWbb0zY8K+pD55HInxwlo7zs4IjEZ+8gAm316DirXcyzUK4NPF9AlzQvnsiA== X-Received: by 2002:a17:90a:1d08:: with SMTP id c8mr3675584pjd.139.1617701201659; Tue, 06 Apr 2021 02:26:41 -0700 (PDT) Received: from hsinchu02.internal.sifive.com (114-34-229-221.HINET-IP.hinet.net. [114.34.229.221]) by smtp.gmail.com with ESMTPSA id w7sm13685589pff.208.2021.04.06.02.26.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Apr 2021 02:26:41 -0700 (PDT) From: Greentime Hu To: greentime.hu@sifive.com, paul.walmsley@sifive.com, hes@sifive.com, erik.danie@sifive.com, zong.li@sifive.com, bhelgaas@google.com, robh+dt@kernel.org, aou@eecs.berkeley.edu, mturquette@baylibre.com, sboyd@kernel.org, lorenzo.pieralisi@arm.com, p.zabel@pengutronix.de, alex.dewar90@gmail.com, khilman@baylibre.com, hayashi.kunihiko@socionext.com, vidyas@nvidia.com, jh80.chung@samsung.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, helgaas@kernel.org Subject: [PATCH v5 0/6] Add SiFive FU740 PCIe host controller driver support Date: Tue, 6 Apr 2021 17:26:28 +0800 Message-Id: <20210406092634.50465-1-greentime.hu@sifive.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210406_102643_801004_AAA2D51B X-CRM114-Status: GOOD ( 12.98 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This patchset includes SiFive FU740 PCIe host controller driver. We also add pcie_aux clock and pcie_power_on_reset controller to prci driver for PCIe driver to use it. This is tested with e1000e: Intel(R) PRO/1000 Network Card, AMD Radeon R5 230 graphics card and SP M.2 PCIe Gen 3 SSD in SiFive Unmatched based on v5.11 Linux kernel. Changes in v5: - Fix typo in comments - Keep comments style consistent - Refine some error handling codes - Remove unneeded header file including - Merge fu740_pcie_ltssm_enable implementation to fu740_pcie_start_link Changes in v4: - Fix Wunused-but-set-variable warning in prci driver Changes in v3: - Remove items that has been defined - Refine format of sifive,fu740-pcie.yaml - Replace perstn-gpios with the common one - Change DBI mapping space to 2GB from 4GB - Refine drivers/reset/Kconfig Changes in v2: - Refine codes based on reviewers' feedback - Remove define and use the common one - Replace __raw_writel with writel_relaxed - Split fu740_phyregreadwrite to write function - Use readl_poll_timeout in stead of while loop checking - Use dwc common codes - Use gpio descriptors and the gpiod_* api. - Replace devm_ioremap_resource with devm_platform_ioremap_resource_byname - Replace devm_reset_control_get with devm_reset_control_get_exclusive - Add more comments for delay and sleep - Remove "phy ? x : y" expressions - Refine code logic to remove possible infinite loop - Replace magic number with meaningful define - Remove fu740_pcie_pm_ops - Use builtin_platform_driver Greentime Hu (5): clk: sifive: Add pcie_aux clock in prci driver for PCIe driver clk: sifive: Use reset-simple in prci driver for PCIe driver MAINTAINERS: Add maintainers for SiFive FU740 PCIe driver dt-bindings: PCI: Add SiFive FU740 PCIe host controller riscv: dts: Add PCIe support for the SiFive FU740-C000 SoC Paul Walmsley (1): PCI: fu740: Add SiFive FU740 PCIe host controller driver .../bindings/pci/sifive,fu740-pcie.yaml | 113 +++++++ MAINTAINERS | 8 + arch/riscv/boot/dts/sifive/fu740-c000.dtsi | 33 ++ drivers/clk/sifive/Kconfig | 2 + drivers/clk/sifive/fu740-prci.c | 11 + drivers/clk/sifive/fu740-prci.h | 2 +- drivers/clk/sifive/sifive-prci.c | 54 +++ drivers/clk/sifive/sifive-prci.h | 13 + drivers/pci/controller/dwc/Kconfig | 9 + drivers/pci/controller/dwc/Makefile | 1 + drivers/pci/controller/dwc/pcie-fu740.c | 308 ++++++++++++++++++ drivers/reset/Kconfig | 1 + include/dt-bindings/clock/sifive-fu740-prci.h | 1 + 13 files changed, 555 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml create mode 100644 drivers/pci/controller/dwc/pcie-fu740.c Acked-by: Palmer Dabbelt