From patchwork Tue Feb 21 02:46:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hal Feng X-Patchwork-Id: 13147317 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A99C3C6FD18 for ; Tue, 21 Feb 2023 02:47:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=qyjn1Zli1XgTdwMpya5EThISk/MMpBNNHOs4teobPtI=; b=r40OPoICqg7/L2 7/jQzeCMxCpxY/mE5T0z+kjHHdYuFwmbGzb2ESHDysJKtEqdYAtAFat7bXFDp/mbx5QWGlkbOg0wG rsp0Ms0EZFPvk+xIYTja2u6QX4uBGn45jQ5D1QOIhV2FyaMH+ZPXxq1lQaszSSnwHmpI8LW0/Ekrh aJM4cHV0vdR7C9IiB7Jiz0lLt1+rf7KXplvoFNTa7UoVM7jIz/eKVhADIBae6UO0i7Hzb2FghCZx1 voCAZQRteGB7yps3iTaNdMqVeHv7Kybhboe9oiTCO7QyjSyMzJehqWemvKhrLdCGcHUvf66NWq9W4 kfjkN6kIyAkb5YKDNnyg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pUIgn-006LJ7-Bs; Tue, 21 Feb 2023 02:47:33 +0000 Received: from ex01.ufhost.com ([61.152.239.75]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pUIgb-006L8n-KS for linux-riscv@lists.infradead.org; Tue, 21 Feb 2023 02:47:25 +0000 Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 22B3A24E205; Tue, 21 Feb 2023 10:47:04 +0800 (CST) Received: from EXMBX172.cuchost.com (172.16.6.92) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 21 Feb 2023 10:47:04 +0800 Received: from localhost.localdomain (183.27.98.67) by EXMBX172.cuchost.com (172.16.6.92) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 21 Feb 2023 10:47:02 +0800 From: Hal Feng To: , , CC: Stephen Boyd , Michael Turquette , Philipp Zabel , "Rob Herring" , Krzysztof Kozlowski , Conor Dooley , "Palmer Dabbelt" , Paul Walmsley , Albert Ou , Ben Dooks , "Daniel Lezcano" , Thomas Gleixner , Marc Zyngier , Emil Renner Berthing , Hal Feng , Subject: [PATCH v4 13/19] reset: starfive: Add StarFive JH7110 reset driver Date: Tue, 21 Feb 2023 10:46:39 +0800 Message-ID: <20230221024645.127922-14-hal.feng@starfivetech.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230221024645.127922-1-hal.feng@starfivetech.com> References: <20230221024645.127922-1-hal.feng@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [183.27.98.67] X-ClientProxiedBy: EXCAS066.cuchost.com (172.16.6.26) To EXMBX172.cuchost.com (172.16.6.92) X-YovoleRuleAgent: yovoleflag X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230220_184721_964424_C6B25ABC X-CRM114-Status: GOOD ( 17.29 ) 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 Add auxiliary driver to support StarFive JH7110 system and always-on resets. Reported-by: kernel test robot Signed-off-by: Hal Feng --- drivers/reset/starfive/Kconfig | 8 +++ drivers/reset/starfive/Makefile | 1 + .../reset/starfive/reset-starfive-jh7110.c | 64 +++++++++++++++++++ .../reset/starfive/reset-starfive-jh71x0.h | 6 ++ 4 files changed, 79 insertions(+) create mode 100644 drivers/reset/starfive/reset-starfive-jh7110.c diff --git a/drivers/reset/starfive/Kconfig b/drivers/reset/starfive/Kconfig index 9d15c4110e40..fab1a081af17 100644 --- a/drivers/reset/starfive/Kconfig +++ b/drivers/reset/starfive/Kconfig @@ -10,3 +10,11 @@ config RESET_STARFIVE_JH7100 default SOC_STARFIVE help This enables the reset controller driver for the StarFive JH7100 SoC. + +config RESET_STARFIVE_JH7110 + bool "StarFive JH7110 Reset Driver" + depends on AUXILIARY_BUS && CLK_STARFIVE_JH7110_SYS + select RESET_STARFIVE_JH71X0 + default CLK_STARFIVE_JH7110_SYS + help + This enables the reset controller driver for the StarFive JH7110 SoC. diff --git a/drivers/reset/starfive/Makefile b/drivers/reset/starfive/Makefile index f6aa12466fad..7a44b66fb9d5 100644 --- a/drivers/reset/starfive/Makefile +++ b/drivers/reset/starfive/Makefile @@ -2,3 +2,4 @@ obj-$(CONFIG_RESET_STARFIVE_JH71X0) += reset-starfive-jh71x0.o obj-$(CONFIG_RESET_STARFIVE_JH7100) += reset-starfive-jh7100.o +obj-$(CONFIG_RESET_STARFIVE_JH7110) += reset-starfive-jh7110.o diff --git a/drivers/reset/starfive/reset-starfive-jh7110.c b/drivers/reset/starfive/reset-starfive-jh7110.c new file mode 100644 index 000000000000..83577d1b7fc6 --- /dev/null +++ b/drivers/reset/starfive/reset-starfive-jh7110.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Reset driver for the StarFive JH7110 SoC + * + * Copyright (C) 2022 StarFive Technology Co., Ltd. + */ + +#include + +#include "reset-starfive-jh71x0.h" + +#include + +static int jh7110_reset_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct reset_info *info = (struct reset_info *)(id->driver_data); + void __iomem **base = (void __iomem **)dev_get_drvdata(adev->dev.parent); + + if (!info || !base) + return -ENODEV; + + return reset_starfive_jh71x0_register(&adev->dev, adev->dev.parent->of_node, + *base + info->assert_offset, + *base + info->status_offset, + NULL, + info->nr_resets, + NULL); +} + +static const struct reset_info jh7110_sys_info = { + .nr_resets = JH7110_SYSRST_END, + .assert_offset = 0x2F8, + .status_offset = 0x308, +}; + +static const struct reset_info jh7110_aon_info = { + .nr_resets = JH7110_AONRST_END, + .assert_offset = 0x38, + .status_offset = 0x3C, +}; + +static const struct auxiliary_device_id jh7110_reset_ids[] = { + { + .name = "clk_starfive_jh71x0.reset-sys", + .driver_data = (kernel_ulong_t)&jh7110_sys_info, + }, + { + .name = "clk_starfive_jh71x0.reset-aon", + .driver_data = (kernel_ulong_t)&jh7110_aon_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(auxiliary, jh7110_reset_ids); + +static struct auxiliary_driver jh7110_reset_driver = { + .probe = jh7110_reset_probe, + .id_table = jh7110_reset_ids, +}; +module_auxiliary_driver(jh7110_reset_driver); + +MODULE_AUTHOR("Hal Feng "); +MODULE_DESCRIPTION("StarFive JH7110 reset driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/reset/starfive/reset-starfive-jh71x0.h b/drivers/reset/starfive/reset-starfive-jh71x0.h index db7d39a87f87..e485472e1adc 100644 --- a/drivers/reset/starfive/reset-starfive-jh71x0.h +++ b/drivers/reset/starfive/reset-starfive-jh71x0.h @@ -6,6 +6,12 @@ #ifndef __RESET_STARFIVE_JH71X0_H #define __RESET_STARFIVE_JH71X0_H +struct reset_info { + unsigned int nr_resets; + unsigned int assert_offset; + unsigned int status_offset; +}; + int reset_starfive_jh71x0_register(struct device *dev, struct device_node *of_node, void __iomem *assert, void __iomem *status, const u32 *asserted, unsigned int nr_resets,