From patchwork Fri Nov 11 09:58:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 624364 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E0A5C43219 for ; Fri, 11 Nov 2022 09:58:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233330AbiKKJ6n (ORCPT ); Fri, 11 Nov 2022 04:58:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233254AbiKKJ6i (ORCPT ); Fri, 11 Nov 2022 04:58:38 -0500 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1177DCC7; Fri, 11 Nov 2022 01:58:34 -0800 (PST) Received: from loongson.cn (unknown [10.180.13.64]) by gateway (Coremail) with SMTP id _____8CxKdjIHG5jYhcGAA--.17320S3; Fri, 11 Nov 2022 17:58:32 +0800 (CST) Received: from localhost.localdomain (unknown [10.180.13.64]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxiFfBHG5jbdUQAA--.27979S2; Fri, 11 Nov 2022 17:58:32 +0800 (CST) From: Yinbo Zhu To: "Rafael J . Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Rob Herring , Krzysztof Kozlowski , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: zhanghongchen , Liu Peibao , Yinbo Zhu Subject: [PATCH v11 1/2] thermal: loongson-2: add thermal management support Date: Fri, 11 Nov 2022 17:58:23 +0800 Message-Id: <20221111095824.26898-1-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxiFfBHG5jbdUQAA--.27979S2 X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBjvJXoW3uw4DJw1kuFyxAry7ZrykuFg_yoWkAw15pF y3C3y5GrsrGFsruwn8Ar1UZFs0vwnIyFy3ZFWxGw1Y9rZ8J343Wry8JFy8ZrWSkryDGF13 ZF98KFWUCFWDW3DanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU b7kFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AKwVWUXVWUAwA2ocxC64 kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26F1j6w1UM28E F7xvwVC0I7IYx2IY6xkF7I0E14v26F4j6r4UJwA2z4x0Y4vEx4A2jsIE14v26F4UJVW0ow A2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Cr1j6rxdM2AIxVAIcxkEcVAq07x20xvEncxIr21l 57IF6xkI12xvs2x26I8E6xACxx1l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20x vE14v26r1Y6r17McIj6I8E87Iv67AKxVWxJVW8Jr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JMxAIw28IcxkI7VAKI48JMxAIw28IcVCjz48v1sIEY20_WwCFx2IqxV CFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r10 6r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxV WUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG 6r1j6r1xMIIF0xvEx4A2jsIE14v26F4j6r4UJwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r 4UJbIYCTnIWIevJa73UjIFyTuYvjxUrManUUUUU Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This patch adds the support for Loongson-2 thermal sensor controller, which can support maximum 4 sensors. It's based on thermal of framework: - Trip points defined in device tree. - Cpufreq as cooling device registered in Loongson-2 cpufreq driver. - Pwm fan as cooling device registered in hwmon pwm-fan driver. Signed-off-by: zhanghongchen Signed-off-by: Yinbo Zhu --- Change in v11: 1. Add min() and max() to replace related code in function loongson2_thermal_set. 2. Add dev_err_probe to to replace related code for function return value use devm_thermal_of_zone_register. 3. Replace thermal_add_hwmon_sysfs with devm_thermal_add_hwmon_sysfs and use dev_warn replace dev_err in this context. Change in v10: 1. Add all history change log information. Change in v9: 1. Switch new API that use devm_thermal_of_zone_register to replace previous interfaces. 2. Add depend on LOONGARCH || COMPILE_TEST. Change in v8: 1. Replace string loongson2/Loongson2/LOONGSON2 with loongson-2/ Loongson-2/LOONGSON-2 in Kconfig and commit log and MAINTAINERS files. Change in v7: 1. Split the modification of patch 3 and merge it into this patch. 2. Remove the unless code annotation to fix the compile warning when compile C code with W=1. Change in v6: 1. NO change, but other patch in this series of patches set has changes. Change in v5: 1. NO change, but other patch in this series of patches set has changes. Change in v4: 1. Fixup the compatible. Change in v3: 1. Add a function to gain sensor id an remove dts id. Change in v2: 1. Remove error msg printing when addr ioremap has error. 2. Make loongson2 thermal driver was built-in by default. 3. Replace ls2k with loongson2. 4. Remove CONFIG_PM_SLEEP and set pm function type was __maybe_unused. MAINTAINERS | 7 + drivers/thermal/Kconfig | 10 ++ drivers/thermal/Makefile | 1 + drivers/thermal/loongson2_thermal.c | 262 ++++++++++++++++++++++++++++ 4 files changed, 280 insertions(+) create mode 100644 drivers/thermal/loongson2_thermal.c diff --git a/MAINTAINERS b/MAINTAINERS index 1b391ca7cf91..0d867573fe4c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12013,6 +12013,13 @@ F: drivers/*/*loongarch* F: Documentation/loongarch/ F: Documentation/translations/zh_CN/loongarch/ +LOONGSON-2 SOC SERIES THERMAL DRIVER +M: zhanghongchen +M: Yinbo Zhu +L: linux-pm@vger.kernel.org +S: Maintained +F: drivers/thermal/loongson2_thermal.c + LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI) M: Sathya Prakash M: Sreekanth Reddy diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index e052dae614eb..93d84bcb16dd 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -504,4 +504,14 @@ config KHADAS_MCU_FAN_THERMAL If you say yes here you get support for the FAN controlled by the Microcontroller found on the Khadas VIM boards. +config LOONGSON2_THERMAL + tristate "Loongson-2 SoC series thermal driver" + depends on LOONGARCH || COMPILE_TEST + depends on OF + help + Support for Thermal driver found on Loongson-2 SoC series platforms. + It supports one critical trip point and one passive trip point. The + cpufreq and the pwm fan is used as the cooling device to throttle + CPUs when the passive trip is crossed. + endif diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 2506c6c8ca83..02f3db809858 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -61,3 +61,4 @@ obj-$(CONFIG_UNIPHIER_THERMAL) += uniphier_thermal.o obj-$(CONFIG_AMLOGIC_THERMAL) += amlogic_thermal.o obj-$(CONFIG_SPRD_THERMAL) += sprd_thermal.o obj-$(CONFIG_KHADAS_MCU_FAN_THERMAL) += khadas_mcu_fan.o +obj-$(CONFIG_LOONGSON2_THERMAL) += loongson2_thermal.o diff --git a/drivers/thermal/loongson2_thermal.c b/drivers/thermal/loongson2_thermal.c new file mode 100644 index 000000000000..0bfca00b6748 --- /dev/null +++ b/drivers/thermal/loongson2_thermal.c @@ -0,0 +1,262 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Author: zhanghongchen + * Yinbo Zhu + * Copyright (C) 2022-2023 Loongson Technology Corporation Limited + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "thermal_hwmon.h" + +#define LOONGSON2_SOC_MAX_SENSOR_NUM 4 + +#define LOONGSON2_TSENSOR_CTRL_HI 0x0 +#define LOONGSON2_TSENSOR_CTRL_LO 0x8 +#define LOONGSON2_TSENSOR_STATUS 0x10 +#define LOONGSON2_TSENSOR_OUT 0x14 + +struct loongson2_thermal_data { + struct thermal_zone_device *tzd; + int irq; + int id; + void __iomem *regs; + struct platform_device *pdev; + u16 ctrl_low_val; + u16 ctrl_hi_val; +}; + +static int loongson2_thermal_set(struct loongson2_thermal_data *data, + int low, int high, bool enable) +{ + u64 reg_ctrl = 0; + int reg_off = data->id * 2; + + if (low > high) + return -EINVAL; + + low = min(low, -100); + high = max(high, 155); + + low += 100; + high += 100; + + reg_ctrl |= low; + reg_ctrl |= enable ? 0x100 : 0; + writew(reg_ctrl, data->regs + LOONGSON2_TSENSOR_CTRL_LO + reg_off); + + reg_ctrl = 0; + reg_ctrl |= high; + reg_ctrl |= enable ? 0x100 : 0; + writew(reg_ctrl, data->regs + LOONGSON2_TSENSOR_CTRL_HI + reg_off); + + return 0; +} + +static int loongson2_thermal_get_temp(struct thermal_zone_device *tz, int *temp) +{ + u32 reg_val; + struct loongson2_thermal_data *data = tz->devdata; + + reg_val = readl(data->regs + LOONGSON2_TSENSOR_OUT); + *temp = ((reg_val & 0xff) - 100) * 1000; + + return 0; +} + +static int loongson2_thermal_get_sensor_id(void) +{ + int ret, id; + struct of_phandle_args sensor_specs; + struct device_node *np, *sensor_np; + + np = of_find_node_by_name(NULL, "thermal-zones"); + if (!np) + return -ENODEV; + + sensor_np = of_get_next_child(np, NULL); + ret = of_parse_phandle_with_args(sensor_np, "thermal-sensors", + "#thermal-sensor-cells", + 0, &sensor_specs); + if (ret) { + of_node_put(np); + of_node_put(sensor_np); + return ret; + } + + if (sensor_specs.args_count >= 1) { + id = sensor_specs.args[0]; + WARN(sensor_specs.args_count > 1, + "%s: too many cells in sensor specifier %d\n", + sensor_specs.np->name, sensor_specs.args_count); + } else { + id = 0; + } + + of_node_put(np); + of_node_put(sensor_np); + + return id; +} + +static irqreturn_t loongson2_thermal_alarm_irq(int irq, void *dev) +{ + struct loongson2_thermal_data *data = dev; + + /* clear interrupt */ + writeb(0x3, data->regs + LOONGSON2_TSENSOR_STATUS); + + disable_irq_nosync(irq); + + return IRQ_WAKE_THREAD; +} + +static irqreturn_t loongson2_thermal_irq_thread(int irq, void *dev) +{ + struct loongson2_thermal_data *data = dev; + + thermal_zone_device_update(data->tzd, + THERMAL_EVENT_UNSPECIFIED); + enable_irq(data->irq); + + return IRQ_HANDLED; +} + +static int loongson2_thermal_set_trips(struct thermal_zone_device *tz, int low, int high) +{ + struct loongson2_thermal_data *data = tz->devdata; + + return loongson2_thermal_set(data, low/1000, high/1000, true); +} + +static const struct thermal_zone_device_ops loongson2_of_thermal_ops = { + .get_temp = loongson2_thermal_get_temp, + .set_trips = loongson2_thermal_set_trips, +}; + +static int loongson2_thermal_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + struct loongson2_thermal_data *data; + int ret; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->pdev = pdev; + platform_set_drvdata(pdev, data); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + data->regs = devm_ioremap(dev, res->start, resource_size(res)); + if (IS_ERR(data->regs)) + return PTR_ERR(data->regs); + + /* get irq */ + data->irq = platform_get_irq(pdev, 0); + if (data->irq < 0) + return data->irq; + + /* get id */ + data->id = loongson2_thermal_get_sensor_id(); + if (data->id > LOONGSON2_SOC_MAX_SENSOR_NUM - 1 || data->id < 0) { + dev_err(dev, "sensor id error,must be in <0 ~ %d>\n", + LOONGSON2_SOC_MAX_SENSOR_NUM - 1); + return -EINVAL; + } + + writeb(0xff, data->regs + LOONGSON2_TSENSOR_STATUS); + + loongson2_thermal_set(data, 0, 0, false); + + data->tzd = devm_thermal_of_zone_register(&pdev->dev, data->id, data, + &loongson2_of_thermal_ops); + if (IS_ERR(data->tzd)) + return dev_err_probe(&pdev->dev, PTR_ERR(data->tzd), + "failed to register"); + + ret = devm_request_threaded_irq(dev, data->irq, + loongson2_thermal_alarm_irq, loongson2_thermal_irq_thread, + IRQF_ONESHOT, "loongson2_thermal", data); + if (ret < 0) { + dev_err(dev, "failed to request alarm irq: %d\n", ret); + return ret; + } + + /* + * Thermal_zone doesn't enable hwmon as default, + * enable it here + */ + data->tzd->tzp->no_hwmon = false; + if (devm_thermal_add_hwmon_sysfs(data->tzd)) + dev_warn(&pdev->dev, "Failed to add hwmon sysfs attributes\n"); + + return 0; +} + +static int loongson2_thermal_remove(struct platform_device *pdev) +{ + struct loongson2_thermal_data *data = platform_get_drvdata(pdev); + int reg_off = data->id * 2; + + /* disable interrupt */ + writew(0, data->regs + LOONGSON2_TSENSOR_CTRL_LO + reg_off); + writew(0, data->regs + LOONGSON2_TSENSOR_CTRL_HI + reg_off); + + return 0; +} + +static const struct of_device_id of_loongson2_thermal_match[] = { + { .compatible = "loongson,ls2k-thermal",}, + { /* end */ } +}; +MODULE_DEVICE_TABLE(of, of_loongson2_thermal_match); + +static int __maybe_unused loongson2_thermal_suspend(struct device *dev) +{ + struct loongson2_thermal_data *data = dev_get_drvdata(dev); + int reg_off = data->id * 2; + + data->ctrl_low_val = readw(data->regs + LOONGSON2_TSENSOR_CTRL_LO + reg_off); + data->ctrl_hi_val = readw(data->regs + LOONGSON2_TSENSOR_CTRL_HI + reg_off); + + writew(0, data->regs + LOONGSON2_TSENSOR_CTRL_LO + reg_off); + writew(0, data->regs + LOONGSON2_TSENSOR_CTRL_HI + reg_off); + + return 0; +} + +static int __maybe_unused loongson2_thermal_resume(struct device *dev) +{ + struct loongson2_thermal_data *data = dev_get_drvdata(dev); + int reg_off = data->id * 2; + + writew(data->ctrl_low_val, data->regs + LOONGSON2_TSENSOR_CTRL_LO + reg_off); + writew(data->ctrl_hi_val, data->regs + LOONGSON2_TSENSOR_CTRL_HI + reg_off); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(loongson2_thermal_pm_ops, + loongson2_thermal_suspend, loongson2_thermal_resume); + +static struct platform_driver loongson2_thermal_driver = { + .driver = { + .name = "loongson2_thermal", + .pm = &loongson2_thermal_pm_ops, + .of_match_table = of_loongson2_thermal_match, + }, + .probe = loongson2_thermal_probe, + .remove = loongson2_thermal_remove, +}; +module_platform_driver(loongson2_thermal_driver); + +MODULE_DESCRIPTION("Loongson2 thermal driver"); +MODULE_LICENSE("GPL"); From patchwork Fri Nov 11 09:58:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 624146 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE46FC4332F for ; Fri, 11 Nov 2022 09:58:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232949AbiKKJ6m (ORCPT ); Fri, 11 Nov 2022 04:58:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41980 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231895AbiKKJ6i (ORCPT ); Fri, 11 Nov 2022 04:58:38 -0500 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2507B2602; Fri, 11 Nov 2022 01:58:34 -0800 (PST) Received: from loongson.cn (unknown [10.180.13.64]) by gateway (Coremail) with SMTP id _____8BxfdrJHG5jZhcGAA--.19552S3; Fri, 11 Nov 2022 17:58:33 +0800 (CST) Received: from localhost.localdomain (unknown [10.180.13.64]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxiFfBHG5jbdUQAA--.27979S3; Fri, 11 Nov 2022 17:58:32 +0800 (CST) From: Yinbo Zhu To: "Rafael J . Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Rob Herring , Krzysztof Kozlowski , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: zhanghongchen , Liu Peibao , Yinbo Zhu , Krzysztof Kozlowski Subject: [PATCH v11 2/2] dt-bindings: thermal: add loongson-2 thermal Date: Fri, 11 Nov 2022 17:58:24 +0800 Message-Id: <20221111095824.26898-2-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20221111095824.26898-1-zhuyinbo@loongson.cn> References: <20221111095824.26898-1-zhuyinbo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxiFfBHG5jbdUQAA--.27979S3 X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBjvJXoWxXF47tF4rWr1DJr47trW5ZFb_yoW5Zr1fpF 47C3WDJr4vvF17uanIkFyIyrsYvFnYyFZrZr4xKw15Kr98X34aq3y7K3WDu393Wr1jgFWU uFySkr4UCF1DArJanT9S1TB71UUUUUJqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU bfAFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AKwVWUXVWUAwA2ocxC64 kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20xvE14v26F1j6w1UM28E F7xvwVC0I7IYx2IY6xkF7I0E14v26F4j6r4UJwA2z4x0Y4vEx4A2jsIE14v26F4UJVW0ow A2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Cr1j6rxdM2kKe7AKxVWUXVWUAwAS0I0E0xvYzxvE 52x082IY62kv0487Mc804VCY07AIYIkI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I 80ewAv7VC0I7IYx2IY67AKxVWUAVWUtwAv7VC2z280aVAFwI0_Cr0_Gr1UMcvjeVCFs4IE 7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCY1x0262kKe7AKxVWUAVWUtwCF04k20xvY0x 0EwIxGrwCF04k20xvE74AGY7Cv6cx26rWl4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1l4IxYO2xF xVAFwI0_Jrv_JF1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWw C2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_JFI_ Gr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJV WUCwCI42IY6I8E87Iv67AKxVWxJVW8Jr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUv cSsGvfC2KfnxnUUI43ZEXa7IU88nY7UUUUU== Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add the Loongson-2 thermal binding with DT schema format using json-schema. Signed-off-by: Yinbo Zhu Reviewed-by: Krzysztof Kozlowski --- Change in v11: 1. NO change, but other patch in this series of patches set has changes. Change in v10: 1. Add all history change log information. Change in v9: 1. NO change, but other patch in this series of patches set has changes. Change in v8: 1. Replace string Loongson2/loongson2 with Loongson-2/loongson-2. Change in v7: 1. Split the modification of patch 3 and merge it into this patch. Change in v6: 1. Fix the warning "reg: [[0, 534779136], [0, 48]] is too long" when compile the yaml. Change in v5: 1. Keep use same quotes "'" in all places. Change in v4: 1. Fixup the compatible. 2. Update the binding file name. 3. Include irq.h to fix compile issue. Change in v3: 1. Remove the sensor id. 2. Remove the interrupt-parent in thermal required property. 3. Update the thermal binding file name. 4. Fixup the commit log information. Change in v2: 1. Add description and type about the "id". 2. Make the filename was based on compatible. .../thermal/loongson,ls2k-thermal.yaml | 43 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml diff --git a/Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml b/Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml new file mode 100644 index 000000000000..c0637e2d6d57 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/loongson,ls2k-thermal.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Thermal sensors on Loongson-2 SoCs + +maintainers: + - zhanghongchen + - Yinbo Zhu + +properties: + compatible: + const: loongson,ls2k-thermal + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + '#thermal-sensor-cells': + const: 1 + +required: + - compatible + - reg + - interrupts + - '#thermal-sensor-cells' + +additionalProperties: false + +examples: + - | + #include + thermal: thermal-sensor@1fe01500 { + compatible = "loongson,ls2k-thermal"; + reg = <0x1fe01500 0x30>; + interrupt-parent = <&liointc0>; + interrupts = <7 IRQ_TYPE_LEVEL_LOW>; + #thermal-sensor-cells = <1>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 0d867573fe4c..182129c73ed5 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12018,6 +12018,7 @@ M: zhanghongchen M: Yinbo Zhu L: linux-pm@vger.kernel.org S: Maintained +F: Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml F: drivers/thermal/loongson2_thermal.c LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI)