From patchwork Wed Dec 6 11:49:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sia Jee Heng X-Patchwork-Id: 13481677 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 EC736C4167B for ; Wed, 6 Dec 2023 11:52:22 +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=iJmeHUUUHXZi+r2TSJm1DtSbW1HzLmOlopsUbRh1x5M=; b=dfUDZ4E5edSwL2 DILFdJfVFodEwv95qtqDLx29N2r/icyNf72SIx7drK7wrq8x46zoolyoCefMJN7XTrjST8VmqcHDR rcBtrrEn9SiObHYFDO7vDCA5GCZh4OAaAnyMz+diXpD4j8315650lCczDf5WuQG4i8C6bGRxh2dsJ maXw3/S46LCCWeo+VgFH1AityT8AD/dtOJzxqG2fbxhG8PK0maZDg4frJPzoewFzAbW8Nu8OGKtKG 35/9E6z0eFfayvSWy0PjOOeR6B1byC2rx1XUDgsh7dzFwhqR/iDbYwmIwkIesD8Jz2UJY+qX+Q8b3 QFngBwP29XoN2LK1aqAw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rAqRs-00A9y5-2x; Wed, 06 Dec 2023 11:52:16 +0000 Received: from ex01.ufhost.com ([61.152.239.75]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rAqRp-00A9sT-2J for linux-riscv@lists.infradead.org; Wed, 06 Dec 2023 11:52:15 +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 6CC2B24E308; Wed, 6 Dec 2023 19:52:13 +0800 (CST) Received: from EXMBX066.cuchost.com (172.16.7.66) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Wed, 6 Dec 2023 19:52:13 +0800 Received: from jsia-virtual-machine.localdomain (175.136.135.142) by EXMBX066.cuchost.com (172.16.6.66) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Wed, 6 Dec 2023 19:52:06 +0800 From: Sia Jee Heng To: , , , , , , , , , , , , CC: , , , , , , Joshua Yeong Subject: [PATCH v1 15/16] reset: starfive: Add StarFive JH8100 reset driver Date: Wed, 6 Dec 2023 19:49:59 +0800 Message-ID: <20231206115000.295825-16-jeeheng.sia@starfivetech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231206115000.295825-1-jeeheng.sia@starfivetech.com> References: <20231206115000.295825-1-jeeheng.sia@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [175.136.135.142] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX066.cuchost.com (172.16.6.66) X-YovoleRuleAgent: yovoleflag X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231206_035214_072942_8514BA8C X-CRM114-Status: GOOD ( 15.82 ) 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 reset driver to support StarFive JH8100 SoC. Co-developed-by: Joshua Yeong Signed-off-by: Joshua Yeong Signed-off-by: Sia Jee Heng Reviewed-by: Ley Foon Tan --- MAINTAINERS | 7 ++ drivers/reset/starfive/Kconfig | 8 ++ drivers/reset/starfive/Makefile | 2 + .../reset/starfive/reset-starfive-jh8100.c | 102 ++++++++++++++++++ 4 files changed, 119 insertions(+) create mode 100644 drivers/reset/starfive/reset-starfive-jh8100.c diff --git a/MAINTAINERS b/MAINTAINERS index 87bcb25becc1..ed728f013d32 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20771,6 +20771,13 @@ F: Documentation/devicetree/bindings/clock/starfive,jh81*.yaml F: drivers/clk/starfive/jh8100 F: include/dt-bindings/clock/starfive?jh81*.h +STARFIVE JH8100 RESET CONTROLLER DRIVERS +M: Sia Jee Heng +M: Ley Foon Tan +S: Maintained +F: drivers/reset/starfive/reset-starfive-jh81* +F: include/dt-bindings/reset/starfive?jh81*.h + STATIC BRANCH/CALL M: Peter Zijlstra M: Josh Poimboeuf diff --git a/drivers/reset/starfive/Kconfig b/drivers/reset/starfive/Kconfig index 29fbcf1a7d83..88d050044d52 100644 --- a/drivers/reset/starfive/Kconfig +++ b/drivers/reset/starfive/Kconfig @@ -19,3 +19,11 @@ config RESET_STARFIVE_JH7110 default ARCH_STARFIVE help This enables the reset controller driver for the StarFive JH7110 SoC. + +config RESET_STARFIVE_JH8100 + bool "StarFive JH8100 Reset Driver" + depends on AUXILIARY_BUS && CLK_STARFIVE_JH8100_SYS + select RESET_STARFIVE_COMMON + default ARCH_STARFIVE + help + This enables the reset controller driver for the StarFive JH8100 SoC. diff --git a/drivers/reset/starfive/Makefile b/drivers/reset/starfive/Makefile index 582e4c160bd4..ede1fc1c9601 100644 --- a/drivers/reset/starfive/Makefile +++ b/drivers/reset/starfive/Makefile @@ -3,3 +3,5 @@ obj-$(CONFIG_RESET_STARFIVE_COMMON) += reset-starfive-common.o obj-$(CONFIG_RESET_STARFIVE_JH7100) += reset-starfive-jh7100.o obj-$(CONFIG_RESET_STARFIVE_JH7110) += reset-starfive-jh7110.o + +obj-$(CONFIG_RESET_STARFIVE_JH8100) += reset-starfive-jh8100.o diff --git a/drivers/reset/starfive/reset-starfive-jh8100.c b/drivers/reset/starfive/reset-starfive-jh8100.c new file mode 100644 index 000000000000..84f3781a22a5 --- /dev/null +++ b/drivers/reset/starfive/reset-starfive-jh8100.c @@ -0,0 +1,102 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Reset driver for the StarFive JH8100 SoC + * + * Copyright (C) 2023 StarFive Technology Co., Ltd. + */ + +#include +#include +#include + +#include "reset-starfive-common.h" + +struct jh8100_reset_info { + unsigned int nr_resets; + unsigned int assert_offset; + unsigned int status_offset; +}; + +static const struct jh8100_reset_info jh8100_sys_info = { + .nr_resets = SYSCRG_RESET_NR_RESETS, + .assert_offset = 0x1B4, + .status_offset = 0x1B8, +}; + +static const struct jh8100_reset_info jh8100_sys_nw_info = { + .nr_resets = SYSCRG_NW_RESET_NR_RESETS, + .assert_offset = 0xA4, + .status_offset = 0xA8, +}; + +static const struct jh8100_reset_info jh8100_sys_ne_info = { + .nr_resets = SYSCRG_NE_RESET_NR_RESETS, + .assert_offset = 0x2BC, + .status_offset = 0x2C4, +}; + +static const struct jh8100_reset_info jh8100_sys_sw_info = { + .nr_resets = SYSCRG_SW_RESET_NR_RESETS, + .assert_offset = 0x28, + .status_offset = 0x2C, +}; + +static const struct jh8100_reset_info jh8100_aon_info = { + .nr_resets = AONCRG_RESET_NR_RESETS, + .assert_offset = 0x104, + .status_offset = 0x108, +}; + +static int jh8100_reset_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct jh8100_reset_info *info = (struct jh8100_reset_info *) + (id->driver_data); + struct starfive_reset_adev *rdev = to_starfive_reset_adev(adev); + void __iomem *base = rdev->base; + + if (!info || !base) + return -ENODEV; + + return reset_starfive_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 jh8100_reset_ids[] = { + { + .name = "clk_sys.rst-sys", + .driver_data = (kernel_ulong_t)&jh8100_sys_info, + }, + { + .name = "clk_sys.rst-sys-nw", + .driver_data = (kernel_ulong_t)&jh8100_sys_nw_info, + }, + { + .name = "clk_sys.rst-sys-ne", + .driver_data = (kernel_ulong_t)&jh8100_sys_ne_info, + }, + { + .name = "clk_sys.rst-sys-sw", + .driver_data = (kernel_ulong_t)&jh8100_sys_sw_info, + }, + { + .name = "clk_sys.rst-aon", + .driver_data = (kernel_ulong_t)&jh8100_aon_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(auxiliary, jh8100_reset_ids); + +static struct auxiliary_driver jh8100_reset_driver = { + .probe = jh8100_reset_probe, + .id_table = jh8100_reset_ids, +}; +module_auxiliary_driver(jh8100_reset_driver); + +MODULE_AUTHOR("Joshua Yeong "); +MODULE_AUTHOR("Sia Jee Heng "); +MODULE_DESCRIPTION("StarFive JH8100 reset driver"); +MODULE_LICENSE("GPL");