From patchwork Sat Apr 1 11:19:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hal Feng X-Patchwork-Id: 13196884 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 C3DD7C77B61 for ; Sat, 1 Apr 2023 11:20:47 +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=Ad9Ni6CYS8nztM1HU9F1wdj+wIRjM4jbYFfn+I24Qo4=; b=kcpxAXHprvC7du Y/to6hW8sBJN5TbTI7xh7p8Z6FJ1HX/SEluKLwmlFyssqyX/Fx+vWbAul33ieeKTWiVEKxcdVf+Pa QgJmyj5YcAE8/756i/p33ka8qZOTw5teGEk043cefp10+Mjf3bECQavWlDY9hyEuUrVmgSJXliY3D Vvr+AOgsOhVw66g4aO1My79hkcSOBKBJLGIMgD+ikhNBt69CPklGu0c4AkvDZnJomYU59qD4JdDxO 3jePIrrQ7x8s6/frQL9UiBcaKYJEv2jvr+KYQwtCW1+SCoqO9D94xrSvSl8dz+TEu83csafJMCWIz jHjuHfbc59N+Nn7b6AlQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1piZHk-00AF52-1q; Sat, 01 Apr 2023 11:20:40 +0000 Received: from ex01.ufhost.com ([61.152.239.75]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1piZHh-00AF2S-28 for linux-riscv@lists.infradead.org; Sat, 01 Apr 2023 11:20:39 +0000 Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id E17E524E178; Sat, 1 Apr 2023 19:19:51 +0800 (CST) Received: from EXMBX172.cuchost.com (172.16.6.92) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Sat, 1 Apr 2023 19:19:51 +0800 Received: from ubuntu.localdomain (113.72.144.76) by EXMBX172.cuchost.com (172.16.6.92) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Sat, 1 Apr 2023 19:19:50 +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 v7 15/22] reset: starfive: Add StarFive JH7110 reset driver Date: Sat, 1 Apr 2023 19:19:27 +0800 Message-ID: <20230401111934.130844-16-hal.feng@starfivetech.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230401111934.130844-1-hal.feng@starfivetech.com> References: <20230401111934.130844-1-hal.feng@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [113.72.144.76] 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-20230401_042038_027113_340D51D8 X-CRM114-Status: GOOD ( 15.67 ) 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. Tested-by: Tommaso Merciai Signed-off-by: Hal Feng --- drivers/reset/starfive/Kconfig | 8 +++ drivers/reset/starfive/Makefile | 1 + .../reset/starfive/reset-starfive-jh7110.c | 70 +++++++++++++++++++ 3 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 1927a5a3b53a..1fa706a2c3dc 100644 --- a/drivers/reset/starfive/Kconfig +++ b/drivers/reset/starfive/Kconfig @@ -10,3 +10,11 @@ config RESET_STARFIVE_JH7100 default ARCH_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 ARCH_STARFIVE + 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..c1b3a490d951 --- /dev/null +++ b/drivers/reset/starfive/reset-starfive-jh7110.c @@ -0,0 +1,70 @@ +// 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 + +struct jh7110_reset_info { + unsigned int nr_resets; + unsigned int assert_offset; + unsigned int status_offset; +}; + +static const struct jh7110_reset_info jh7110_sys_info = { + .nr_resets = JH7110_SYSRST_END, + .assert_offset = 0x2F8, + .status_offset = 0x308, +}; + +static const struct jh7110_reset_info jh7110_aon_info = { + .nr_resets = JH7110_AONRST_END, + .assert_offset = 0x38, + .status_offset = 0x3C, +}; + +static int jh7110_reset_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct jh7110_reset_info *info = (struct jh7110_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 auxiliary_device_id jh7110_reset_ids[] = { + { + .name = "clk_starfive_jh7110_sys.rst-sys", + .driver_data = (kernel_ulong_t)&jh7110_sys_info, + }, + { + .name = "clk_starfive_jh7110_sys.rst-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");