From patchwork Sat Oct 29 08:21:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 12667 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp1250880wru; Sat, 29 Oct 2022 01:42:54 -0700 (PDT) X-Google-Smtp-Source: AMsMyM5vyditFWKsNE3w8ThFYuZ1k3ejKHcva/rqNsB1SfyG+qm1QzXa9TyJHp6D7qMkh7J+2nyw X-Received: by 2002:a05:6402:847:b0:453:943b:bf4 with SMTP id b7-20020a056402084700b00453943b0bf4mr3378671edz.301.1667032974574; Sat, 29 Oct 2022 01:42:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1667032974; cv=none; d=google.com; s=arc-20160816; b=UJxLfxTDNrJBOL8mhrTAbrpM4YGOudylhppkONabORQLLTWYcmRqQIlUkZL3QJ/yHl H5rm6oAxnK7FNVQR3szvHvHR086gcuycPUSFa22+SrUBXI769jXUrj1VNsaMKi9zXVtY Mqojrzjtnzj6Ehw2hB79EOfjsSUIhaySEd4mgzNpLc+PZSw0aez8BU7dS51Ws4wP3LrS xRGOdEg7d8E195ons9cwuTtkJ2YH88r3UL5vu7D7M8V+onpVdcAEp11N9izSd5mJCxMn /ONaMEh+qGd7tGGM7TAjHtavlF5UbSvgt0wxnaR2ppCtXDrW5KMK0HXubzqc5X6wTsip vSxA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:to:from; bh=aJ9ix1o1pG5pc4CgCo1c+DrW7Rp7FLawK/+HuoWSEwU=; b=cOB9vpFqeuULZulj0oI9HF9GnNP21fxB6cfAQiumcIuzuLaR4LLFeepfy+CULEHJJu Vjrp2n3LNl3znSvwlVbh8q942RgxSbBGRuFZslcoJLxU1PCMFvHQeYG+YOMX/fr9DNq9 dtACW5loEYyGg856HpMOhvzFQ0LZBn9ssIEiMP3kbz7j1v8lk0xj1aUJppPzbLlMAozX TJZvOub+SB2lBCORRWmxd50oy/w5o3T0x+oMXttewTQy/fW2MAwaDHrS18YEUIsoyuep /mUbcMlUUKJbHLtXkd3/7ZJ+nU/YhZ/qD1fke52JE9Up4y0KQjzTGjYSjQx8h7JG7u27 r2gw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id ds8-20020a170907724800b0078d3ab37efasi1305960ejc.84.2022.10.29.01.42.28; Sat, 29 Oct 2022 01:42:54 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229946AbiJ2IVs (ORCPT + 99 others); Sat, 29 Oct 2022 04:21:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229457AbiJ2IVr (ORCPT ); Sat, 29 Oct 2022 04:21:47 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E89A3C90EC; Sat, 29 Oct 2022 01:21:44 -0700 (PDT) Received: from loongson.cn (unknown [10.180.13.64]) by gateway (Coremail) with SMTP id _____8CxbbeX4lxjYj4DAA--.7205S3; Sat, 29 Oct 2022 16:21:43 +0800 (CST) Received: from localhost.localdomain (unknown [10.180.13.64]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxR1eQ4lxjKWcHAA--.6252S2; Sat, 29 Oct 2022 16:21:40 +0800 (CST) From: Yinbo Zhu To: Rob Herring , Krzysztof Kozlowski , Arnd Bergmann , Hector Martin , Lubomir Rintel , Conor Dooley , Linus Walleij , Hitomi Hasegawa , Heiko Stuebner , Brian Norris , Sven Peter , loongarch@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Yinbo Zhu Subject: [PATCH v3 1/2] soc: loongson: add GUTS driver for loongson-2 platforms Date: Sat, 29 Oct 2022 16:21:34 +0800 Message-Id: <20221029082135.31096-1-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxR1eQ4lxjKWcHAA--.6252S2 X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBjvJXoW3AF4xKw1DCr1DJw13GFykZrb_yoWfurWUpa 1fC34rGrWUJF45urs8Ja48uFyY9as7CasruF4xWwn8ur97A34UXas7JFyUZrs7ZrykA342 qF95GayjkFWUA3DanT9S1TB71UUUUbJqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU bSxFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AKwVWUAVWUZwA2ocxC64 kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26ryj6F1UM28E F7xvwVC0I7IYx2IY6xkF7I0E14v26r4j6F4UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJwAaw2AFwI0_Jw0_GFyle2I262IYc4CY 6c8Ij28IcVAaY2xG8wAqjxCEc2xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrV C2j2WlYx0E2Ix0cI8IcVAFwI0_Jw0_WrylYx0Ex4A2jsIE14v26F4j6r4UJwAm72CE4IkC 6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lc7CjxVAaw2AFwI0_Jw0_GFyl42xK82IYc2 Ij64vIr41l42xK82IY6x8ErcxFaVAv8VWrMxC20s026xCaFVCjc4AY6r1j6r4UMxCIbckI 1I0E14v26r1q6r43MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_Jr Wlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r4j 6ryUMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr 0_JF4lIxAIcVC2z280aVAFwI0_Cr0_Gr1UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4U JbIYCTnIWIevJa73UjIFyTuYvjxUcxhLUUUUU X-Spam-Status: No, score=1.4 required=5.0 tests=BAYES_00,RCVD_IN_SBL_CSS, SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Level: * X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1748010768106471370?= X-GMAIL-MSGID: =?utf-8?q?1748010768106471370?= The global utilities block controls PCIE device enabling, alternate function selection for multiplexed signals, consistency of HDA, USB and PCIE, configuration of memory controller, rtc controller, lio controller, and clock control. This patch adds a driver to manage and access global utilities block for loongarch architecture Loongson-2 SoCs. Initially only reading SVR and registering soc device are supported. Other guts accesses, such as reading PMON configuration by default, should eventually be added into this driver as well. Signed-off-by: Yinbo Zhu --- Change in v3: 1. Replace string loongson2/Loongson2 with Loongson-2/loongson-2 in commit message, Kconfig, Makefile file. 2. Replace string LOONGSON2 with LOONGSON-2. MAINTAINERS | 6 + drivers/soc/Kconfig | 1 + drivers/soc/Makefile | 1 + drivers/soc/loongson/Kconfig | 20 +++ drivers/soc/loongson/Makefile | 6 + drivers/soc/loongson/loongson2_guts.c | 189 ++++++++++++++++++++++++++ 6 files changed, 223 insertions(+) create mode 100644 drivers/soc/loongson/Kconfig create mode 100644 drivers/soc/loongson/Makefile create mode 100644 drivers/soc/loongson/loongson2_guts.c diff --git a/MAINTAINERS b/MAINTAINERS index 4fc949c36a44..a02d45dd21ce 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11930,6 +11930,12 @@ S: Maintained F: Documentation/devicetree/bindings/pinctrl/loongson,ls2k-pinctrl.yaml F: drivers/pinctrl/pinctrl-loongson2.c +LOONGSON-2 SOC SERIES GUTS DRIVER +M: Yinbo Zhu +L: loongarch@lists.linux.dev +S: Maintained +F: drivers/soc/loongson/loongson2_guts.c + LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI) M: Sathya Prakash M: Sreekanth Reddy diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig index e461c071189b..5dbb09f843f7 100644 --- a/drivers/soc/Kconfig +++ b/drivers/soc/Kconfig @@ -13,6 +13,7 @@ source "drivers/soc/fujitsu/Kconfig" source "drivers/soc/imx/Kconfig" source "drivers/soc/ixp4xx/Kconfig" source "drivers/soc/litex/Kconfig" +source "drivers/soc/loongson/Kconfig" source "drivers/soc/mediatek/Kconfig" source "drivers/soc/microchip/Kconfig" source "drivers/soc/pxa/Kconfig" diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile index 69ba6508cf2c..fff513bd522d 100644 --- a/drivers/soc/Makefile +++ b/drivers/soc/Makefile @@ -18,6 +18,7 @@ obj-y += imx/ obj-y += ixp4xx/ obj-$(CONFIG_SOC_XWAY) += lantiq/ obj-$(CONFIG_LITEX_SOC_CONTROLLER) += litex/ +obj-y += loongson/ obj-y += mediatek/ obj-y += microchip/ obj-y += pxa/ diff --git a/drivers/soc/loongson/Kconfig b/drivers/soc/loongson/Kconfig new file mode 100644 index 000000000000..64e813962bb0 --- /dev/null +++ b/drivers/soc/loongson/Kconfig @@ -0,0 +1,20 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Loongson-2 series SoC drivers +# + +menu "Loongson-2 series SoC drivers" + +config LOONGSON2_GUTS + tristate "Loongson-2 GUTS" + depends on LOONGARCH || COMPILE_TEST + select SOC_BUS + help + The global utilities block controls PCIE device enabling, alternate + function selection for multiplexed signals, consistency of HDA, USB + and PCIE, configuration of memory controller, rtc controller, lio + controller, and clock control. This patch adds a driver to manage + and access global utilities block for loongarch architecture Loongson-2 + SoCs. Initially only reading SVR and registering soc device are + supported. Other guts accesses, such as reading PMON configuration by + default, should eventually be added into this driver as well. diff --git a/drivers/soc/loongson/Makefile b/drivers/soc/loongson/Makefile new file mode 100644 index 000000000000..263c486df638 --- /dev/null +++ b/drivers/soc/loongson/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Makefile for the Linux Kernel SoC Loongson-2 specific device drivers +# + +obj-$(CONFIG_LOONGSON2_GUTS) += loongson2_guts.o diff --git a/drivers/soc/loongson/loongson2_guts.c b/drivers/soc/loongson/loongson2_guts.c new file mode 100644 index 000000000000..8f3d5465c7e8 --- /dev/null +++ b/drivers/soc/loongson/loongson2_guts.c @@ -0,0 +1,189 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Author: Yinbo Zhu + * Copyright (C) 2022-2023 Loongson Technology Corporation Limited + */ + +#include +#include +#include +#include +#include +#include +#include + +static struct soc_device_attribute soc_dev_attr; +static struct soc_device *soc_dev; + +/* + * Global Utility Registers. + * + * Not all registers defined in this structure are available on all chips, so + * you are expected to know whether a given register actually exists on your + * chip before you access it. + * + * Also, some registers are similar on different chips but have slightly + * different names. In these cases, one name is chosen to avoid extraneous + * #ifdefs. + */ +struct scfg_guts { + u32 svr; /* Version Register */ + u8 res0[4]; + u16 feature; /* Feature Register */ + u32 vendor; /* Vendor Register */ + u8 res1[6]; + u32 id; + u8 res2[0x3ff8 - 0x18]; + u32 chip; +}; + +static struct guts { + struct scfg_guts __iomem *regs; + bool little_endian; +} *guts; + +struct loongson2_soc_die_attr { + char *die; + u32 svr; + u32 mask; +}; + +/* SoC die attribute definition for Loongson-2 platform */ +static const struct loongson2_soc_die_attr loongson2_soc_die[] = { + + /* + * LA-based SoCs Loongson-2 Series + */ + + /* Die: 2k1000la, SoC: 2k1000la */ + { .die = "2K1000LA", + .svr = 0x00000013, + .mask = 0x000000ff, + }, + { }, +}; + +static const struct loongson2_soc_die_attr *loongson2_soc_die_match( + u32 svr, const struct loongson2_soc_die_attr *matches) +{ + while (matches->svr) { + if (matches->svr == (svr & matches->mask)) + return matches; + matches++; + }; + + return NULL; +} + +static u32 loongson2_guts_get_svr(void) +{ + u32 svr = 0; + + if (!guts || !guts->regs) + return svr; + + if (guts->little_endian) + svr = ioread32(&guts->regs->svr); + else + svr = ioread32be(&guts->regs->svr); + + return svr; +} + +static int loongson2_guts_probe(struct platform_device *pdev) +{ + struct device_node *root, *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct resource *res; + const struct loongson2_soc_die_attr *soc_die; + const char *machine; + u32 svr; + + /* Initialize guts */ + guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL); + if (!guts) + return -ENOMEM; + + guts->little_endian = of_property_read_bool(np, "little-endian"); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + guts->regs = ioremap(res->start, res->end - res->start + 1); + if (IS_ERR(guts->regs)) + return PTR_ERR(guts->regs); + + /* Register soc device */ + root = of_find_node_by_path("/"); + if (of_property_read_string(root, "model", &machine)) + of_property_read_string_index(root, "compatible", 0, &machine); + of_node_put(root); + if (machine) + soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL); + + svr = loongson2_guts_get_svr(); + soc_die = loongson2_soc_die_match(svr, loongson2_soc_die); + if (soc_die) { + soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, + "Loongson %s", soc_die->die); + } else { + soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "Loongson"); + } + if (!soc_dev_attr.family) + return -ENOMEM; + soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL, + "svr:0x%08x", svr); + if (!soc_dev_attr.soc_id) + return -ENOMEM; + soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d", + (svr >> 4) & 0xf, svr & 0xf); + if (!soc_dev_attr.revision) + return -ENOMEM; + + soc_dev = soc_device_register(&soc_dev_attr); + if (IS_ERR(soc_dev)) + return PTR_ERR(soc_dev); + + pr_info("Machine: %s\n", soc_dev_attr.machine); + pr_info("SoC family: %s\n", soc_dev_attr.family); + pr_info("SoC ID: %s, Revision: %s\n", + soc_dev_attr.soc_id, soc_dev_attr.revision); + + return 0; +} + +static int loongson2_guts_remove(struct platform_device *dev) +{ + soc_device_unregister(soc_dev); + + return 0; +} + +/* + * Table for matching compatible strings, for device tree + * guts node, for Loongson-2 SoCs. + */ +static const struct of_device_id loongson2_guts_of_match[] = { + { .compatible = "loongson,ls2k-chipid", }, + {} +}; +MODULE_DEVICE_TABLE(of, loongson2_guts_of_match); + +static struct platform_driver loongson2_guts_driver = { + .driver = { + .name = "loongson2-guts", + .of_match_table = loongson2_guts_of_match, + }, + .probe = loongson2_guts_probe, + .remove = loongson2_guts_remove, +}; + +static int __init loongson2_guts_init(void) +{ + return platform_driver_register(&loongson2_guts_driver); +} +core_initcall(loongson2_guts_init); + +static void __exit loongson2_guts_exit(void) +{ + platform_driver_unregister(&loongson2_guts_driver); +} +module_exit(loongson2_guts_exit); From patchwork Sat Oct 29 08:21:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 12664 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp1248431wru; 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[2620:137:e000::1:20]) by mx.google.com with ESMTP id l62-20020a638841000000b00439e032756fsi1236631pgd.65.2022.10.29.01.33.35; Sat, 29 Oct 2022 01:33:49 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229954AbiJ2IVv (ORCPT + 99 others); Sat, 29 Oct 2022 04:21:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56646 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229936AbiJ2IVr (ORCPT ); Sat, 29 Oct 2022 04:21:47 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E81DDC355B; Sat, 29 Oct 2022 01:21:44 -0700 (PDT) Received: from loongson.cn (unknown [10.180.13.64]) by gateway (Coremail) with SMTP id _____8AxbdqX4lxjZj4DAA--.12368S3; Sat, 29 Oct 2022 16:21:43 +0800 (CST) Received: from localhost.localdomain (unknown [10.180.13.64]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxR1eQ4lxjKWcHAA--.6252S3; Sat, 29 Oct 2022 16:21:41 +0800 (CST) From: Yinbo Zhu To: Rob Herring , Krzysztof Kozlowski , Arnd Bergmann , Hector Martin , Lubomir Rintel , Conor Dooley , Linus Walleij , Hitomi Hasegawa , Heiko Stuebner , Brian Norris , Sven Peter , loongarch@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Yinbo Zhu Subject: [PATCH v3 2/2] dt-bindings: soc: add loongson-2 chipid Date: Sat, 29 Oct 2022 16:21:35 +0800 Message-Id: <20221029082135.31096-2-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20221029082135.31096-1-zhuyinbo@loongson.cn> References: <20221029082135.31096-1-zhuyinbo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxR1eQ4lxjKWcHAA--.6252S3 X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBjvJXoW7uF15Xw1fArW7KFyfJryfXrb_yoW8tFykpa 13Cr95KF4xtF17uws5Ka4Ik3W5Zr95AFsFgFZrZw13KrWqg3WFqw43K3WDZanrZr1UJayU uFWfGrW5GF4xCr7anT9S1TB71UUUUbJqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU bSxFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AKwVWUXVWUAwA2ocxC64 kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26ryj6F1UM28E F7xvwVC0I7IYx2IY6xkF7I0E14v26r4j6F4UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJwAaw2AFwI0_Jw0_GFyle2I262IYc4CY 6c8Ij28IcVAaY2xG8wAqjxCEc2xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrV C2j2WlYx0E2Ix0cI8IcVAFwI0_Jw0_WrylYx0Ex4A2jsIE14v26F4j6r4UJwAm72CE4IkC 6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lc7CjxVAaw2AFwI0_Jw0_GFyl42xK82IYc2 Ij64vIr41l42xK82IY6x8ErcxFaVAv8VWrMxC20s026xCaFVCjc4AY6r1j6r4UMxCIbckI 1I0E14v26r1q6r43MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_Jr Wlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26ryj 6F1UMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr 0_JF4lIxAIcVC2z280aVAFwI0_Cr0_Gr1UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4U JbIYCTnIWIevJa73UjIFyTuYvjxUciL0UUUUU X-Spam-Status: No, score=1.4 required=5.0 tests=BAYES_00,RCVD_IN_SBL_CSS, SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Level: * X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1748010196788540851?= X-GMAIL-MSGID: =?utf-8?q?1748010196788540851?= Add the Loongson-2 SoC chipid binding with DT schema format using json-schema. Signed-off-by: Yinbo Zhu --- Change in v3: 1. Drop "driver" and describe instead what is GUTS, including its acronym. 2. Add desciption about the SoC register. 3. Fixup dts node name. 4. Replace string loongson2/Loongson2 with loongson-2/Loongson-2 in binding file and commit message. .../bindings/hwinfo/loongson,ls2k-chipid.yaml | 38 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwinfo/loongson,ls2k-chipid.yaml diff --git a/Documentation/devicetree/bindings/hwinfo/loongson,ls2k-chipid.yaml b/Documentation/devicetree/bindings/hwinfo/loongson,ls2k-chipid.yaml new file mode 100644 index 000000000000..9d0c36ec1982 --- /dev/null +++ b/Documentation/devicetree/bindings/hwinfo/loongson,ls2k-chipid.yaml @@ -0,0 +1,38 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwinfo/loongson,ls2k-chipid.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson-2 SoC ChipID + +maintainers: + - Yinbo Zhu + +description: | + Loongson-2 SoC contains many groups of global utilities register + blocks, of which the ChipID group registers record SoC version, + feature, vendor and id information. + +properties: + compatible: + const: loongson,ls2k-chipid + + reg: + maxItems: 1 + + little-endian: true + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + chipid: chipid@1fe00000 { + compatible = "loongson,ls2k-chipid"; + reg = <0x1fe00000 0x3ffc>; + little-endian; + }; diff --git a/MAINTAINERS b/MAINTAINERS index a02d45dd21ce..072da0f47f14 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11934,6 +11934,7 @@ LOONGSON-2 SOC SERIES GUTS DRIVER M: Yinbo Zhu L: loongarch@lists.linux.dev S: Maintained +F: Documentation/devicetree/bindings/hwinfo/loongson,ls2k-chipid.yaml F: drivers/soc/loongson/loongson2_guts.c LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI)