From mboxrd@z Thu Jan 1 00:00:00 1970 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 BF90AC4361A for ; Tue, 2 Mar 2021 11:22:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 952F361606 for ; Tue, 2 Mar 2021 11:22:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1838780AbhCBLTZ (ORCPT ); Tue, 2 Mar 2021 06:19:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49848 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349675AbhCBLDJ (ORCPT ); Tue, 2 Mar 2021 06:03:09 -0500 Received: from mail-pf1-x433.google.com (mail-pf1-x433.google.com [IPv6:2607:f8b0:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BC81C0617AB for ; Tue, 2 Mar 2021 02:59:36 -0800 (PST) Received: by mail-pf1-x433.google.com with SMTP id i10so4425174pfk.4 for ; Tue, 02 Mar 2021 02:59:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=u6t/37IyVxin5Ht2dpG96JWylVJHChqoPdK9b3/r2Tk=; b=dmHcDAYFKLLqTOsvf5p41tbZfMnkTkQbBAs8K9RFyRZ1BWqaviEUrW6MltF8u402OJ qr9t7qF/MVuoxGJnduTffQKjYx8nbsFN6oaHDJuWZ3NOHX6NAkVsw3o4tKkX87+vLtVe 0TEQdBi7us9IB1SCjzNKuV1/CKNUv7q+xMwcqYYK4w9kr/Czggj89AE2v0Tve2wtnKZp GlwZ9G6kBho4Ct0PUXMYzQ1JyYOBFLDAst2+fEIzQNwU+wpsadnfNYKVi0WQ8zjd5I1S Kktrg+quS/UItfCItat+2Z65rMVvVrbVC11DhVqfjoaiWMYoPDZS1aXBjsTi4R2ymFjX RnSw== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=u6t/37IyVxin5Ht2dpG96JWylVJHChqoPdK9b3/r2Tk=; b=AoGAv18/cUAOYmPcy56GiemysDeVZZrUTBAfVlwE0Ltmonr0wVpc6Mnpf12uHZ6ib7 HaAXa//UqyP6KRw2HjdsQCgsfcPe3dbiMt8gm41GOOXax8EsmI1CWIE5oxmzqUNk+z/e EkFHKZJsqK2Pdzva2FTiuHQJEGrnt/ojNt0s2BcKnwbWZKgeOa4hd6SQdw8h7kV1yKKU OiNUP97npcKoVr5LHMdcGbjSjrT6PF/5GpaJgvITAXNsflmAtthmnkKLg60g2iiDBSdD +8vEU/+M81aumQK2rGDglvE027G6GjxZvlz4ZJAdm34Wtoq8UEHylx5IP1qfBbxQqACY fRDA== X-Gm-Message-State: AOAM530lc20G1N/RqWY/FD8BWYMrrQRolFgB/TxqKH2akkKEXJvJipyQ LpcNScGGE2ChkeR30rwttjQ6Pw== X-Google-Smtp-Source: ABdhPJylvXar14N05xZmEcvHjUe6bk4TRJdURaXGBevBG2TJaWqrMkEom3Rr1QxWW0n0TwD/tl5mKA== X-Received: by 2002:a63:d451:: with SMTP id i17mr2445904pgj.391.1614682775713; Tue, 02 Mar 2021 02:59:35 -0800 (PST) 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 t26sm19500451pfq.208.2021.03.02.02.59.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Mar 2021 02:59:35 -0800 (PST) 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, palmer@dabbelt.com, 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 Subject: [RFC PATCH 2/6] clk: sifive: Use reset-simple in prci driver for PCIe driver Date: Tue, 2 Mar 2021 18:59:13 +0800 Message-Id: X-Mailer: git-send-email 2.30.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We use reset-simple in this patch so that pcie driver can use devm_reset_control_get() to get this reset data structure and use reset_control_deassert() to deassert pcie_power_up_rst_n. Signed-off-by: Greentime Hu --- drivers/clk/sifive/Kconfig | 2 ++ drivers/clk/sifive/sifive-prci.c | 14 ++++++++++++++ drivers/clk/sifive/sifive-prci.h | 4 ++++ drivers/reset/Kconfig | 3 ++- 4 files changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/clk/sifive/Kconfig b/drivers/clk/sifive/Kconfig index 1c14eb20c066..9132c3c4aa86 100644 --- a/drivers/clk/sifive/Kconfig +++ b/drivers/clk/sifive/Kconfig @@ -10,6 +10,8 @@ if CLK_SIFIVE config CLK_SIFIVE_PRCI bool "PRCI driver for SiFive SoCs" + select RESET_CONTROLLER + select RESET_SIMPLE select CLK_ANALOGBITS_WRPLL_CLN28HPC help Supports the Power Reset Clock interface (PRCI) IP block found in diff --git a/drivers/clk/sifive/sifive-prci.c b/drivers/clk/sifive/sifive-prci.c index baf7313dac92..925affc6de55 100644 --- a/drivers/clk/sifive/sifive-prci.c +++ b/drivers/clk/sifive/sifive-prci.c @@ -583,7 +583,21 @@ static int sifive_prci_probe(struct platform_device *pdev) if (IS_ERR(pd->va)) return PTR_ERR(pd->va); + pd->reset.rcdev.owner = THIS_MODULE; + pd->reset.rcdev.nr_resets = PRCI_RST_NR; + pd->reset.rcdev.ops = &reset_simple_ops; + pd->reset.rcdev.of_node = pdev->dev.of_node; + pd->reset.active_low = true; + pd->reset.membase = pd->va + PRCI_DEVICESRESETREG_OFFSET; + spin_lock_init(&pd->reset.lock); + + r = devm_reset_controller_register(&pdev->dev, &pd->reset.rcdev); + if (r) { + dev_err(dev, "could not register reset controller: %d\n", r); + return r; + } r = __prci_register_clocks(dev, pd, desc); + if (r) { dev_err(dev, "could not register clocks: %d\n", r); return r; diff --git a/drivers/clk/sifive/sifive-prci.h b/drivers/clk/sifive/sifive-prci.h index 022c67cf053c..91658a88af4e 100644 --- a/drivers/clk/sifive/sifive-prci.h +++ b/drivers/clk/sifive/sifive-prci.h @@ -11,6 +11,7 @@ #include #include +#include #include /* @@ -121,6 +122,8 @@ #define PRCI_DEVICESRESETREG_CHIPLINK_RST_N_MASK \ (0x1 << PRCI_DEVICESRESETREG_CHIPLINK_RST_N_SHIFT) +#define PRCI_RST_NR 7 + /* CLKMUXSTATUSREG */ #define PRCI_CLKMUXSTATUSREG_OFFSET 0x2c #define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT 1 @@ -221,6 +224,7 @@ */ struct __prci_data { void __iomem *va; + struct reset_simple_data reset; struct clk_hw_onecell_data hw_clks; }; diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 71ab75a46491..f094df93d911 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -173,7 +173,7 @@ config RESET_SCMI config RESET_SIMPLE bool "Simple Reset Controller Driver" if COMPILE_TEST - default ARCH_AGILEX || ARCH_ASPEED || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARC + default ARCH_AGILEX || ARCH_ASPEED || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARC || RISCV help This enables a simple reset controller driver for reset lines that that can be asserted and deasserted by toggling bits in a contiguous, @@ -187,6 +187,7 @@ config RESET_SIMPLE - RCC reset controller in STM32 MCUs - Allwinner SoCs - ZTE's zx2967 family + - SiFive FU740 SoCs config RESET_STM32MP157 bool "STM32MP157 Reset Driver" if COMPILE_TEST -- 2.30.0 From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 CB64EC433E0 for ; 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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id t26sm19500451pfq.208.2021.03.02.02.59.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Mar 2021 02:59:35 -0800 (PST) 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, palmer@dabbelt.com, 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 Subject: [RFC PATCH 2/6] clk: sifive: Use reset-simple in prci driver for PCIe driver Date: Tue, 2 Mar 2021 18:59:13 +0800 Message-Id: X-Mailer: git-send-email 2.30.0 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210302_110040_866740_280F6AF5 X-CRM114-Status: GOOD ( 13.60 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org We use reset-simple in this patch so that pcie driver can use devm_reset_control_get() to get this reset data structure and use reset_control_deassert() to deassert pcie_power_up_rst_n. Signed-off-by: Greentime Hu --- drivers/clk/sifive/Kconfig | 2 ++ drivers/clk/sifive/sifive-prci.c | 14 ++++++++++++++ drivers/clk/sifive/sifive-prci.h | 4 ++++ drivers/reset/Kconfig | 3 ++- 4 files changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/clk/sifive/Kconfig b/drivers/clk/sifive/Kconfig index 1c14eb20c066..9132c3c4aa86 100644 --- a/drivers/clk/sifive/Kconfig +++ b/drivers/clk/sifive/Kconfig @@ -10,6 +10,8 @@ if CLK_SIFIVE config CLK_SIFIVE_PRCI bool "PRCI driver for SiFive SoCs" + select RESET_CONTROLLER + select RESET_SIMPLE select CLK_ANALOGBITS_WRPLL_CLN28HPC help Supports the Power Reset Clock interface (PRCI) IP block found in diff --git a/drivers/clk/sifive/sifive-prci.c b/drivers/clk/sifive/sifive-prci.c index baf7313dac92..925affc6de55 100644 --- a/drivers/clk/sifive/sifive-prci.c +++ b/drivers/clk/sifive/sifive-prci.c @@ -583,7 +583,21 @@ static int sifive_prci_probe(struct platform_device *pdev) if (IS_ERR(pd->va)) return PTR_ERR(pd->va); + pd->reset.rcdev.owner = THIS_MODULE; + pd->reset.rcdev.nr_resets = PRCI_RST_NR; + pd->reset.rcdev.ops = &reset_simple_ops; + pd->reset.rcdev.of_node = pdev->dev.of_node; + pd->reset.active_low = true; + pd->reset.membase = pd->va + PRCI_DEVICESRESETREG_OFFSET; + spin_lock_init(&pd->reset.lock); + + r = devm_reset_controller_register(&pdev->dev, &pd->reset.rcdev); + if (r) { + dev_err(dev, "could not register reset controller: %d\n", r); + return r; + } r = __prci_register_clocks(dev, pd, desc); + if (r) { dev_err(dev, "could not register clocks: %d\n", r); return r; diff --git a/drivers/clk/sifive/sifive-prci.h b/drivers/clk/sifive/sifive-prci.h index 022c67cf053c..91658a88af4e 100644 --- a/drivers/clk/sifive/sifive-prci.h +++ b/drivers/clk/sifive/sifive-prci.h @@ -11,6 +11,7 @@ #include #include +#include #include /* @@ -121,6 +122,8 @@ #define PRCI_DEVICESRESETREG_CHIPLINK_RST_N_MASK \ (0x1 << PRCI_DEVICESRESETREG_CHIPLINK_RST_N_SHIFT) +#define PRCI_RST_NR 7 + /* CLKMUXSTATUSREG */ #define PRCI_CLKMUXSTATUSREG_OFFSET 0x2c #define PRCI_CLKMUXSTATUSREG_TLCLKSEL_STATUS_SHIFT 1 @@ -221,6 +224,7 @@ */ struct __prci_data { void __iomem *va; + struct reset_simple_data reset; struct clk_hw_onecell_data hw_clks; }; diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 71ab75a46491..f094df93d911 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -173,7 +173,7 @@ config RESET_SCMI config RESET_SIMPLE bool "Simple Reset Controller Driver" if COMPILE_TEST - default ARCH_AGILEX || ARCH_ASPEED || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARC + default ARCH_AGILEX || ARCH_ASPEED || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARC || RISCV help This enables a simple reset controller driver for reset lines that that can be asserted and deasserted by toggling bits in a contiguous, @@ -187,6 +187,7 @@ config RESET_SIMPLE - RCC reset controller in STM32 MCUs - Allwinner SoCs - ZTE's zx2967 family + - SiFive FU740 SoCs config RESET_STM32MP157 bool "STM32MP157 Reset Driver" if COMPILE_TEST -- 2.30.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv