{"id":2219669,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2219669/?format=json","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/1.0/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<20260403162541.86608-7-sgdfkk@163.com>","date":"2026-04-03T16:25:40","name":"[v7,6/7] mips: loongson: add watchdog driver","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"89111d1f2098047599ab67de007204477234a042","submitter":{"id":92844,"url":"http://patchwork.ozlabs.org/api/1.0/people/92844/?format=json","name":null,"email":"sgdfkk@163.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/20260403162541.86608-7-sgdfkk@163.com/mbox/","series":[{"id":498655,"url":"http://patchwork.ozlabs.org/api/1.0/series/498655/?format=json","date":"2026-04-03T16:25:35","name":"add loongson mips ls1c300 initial support","version":7,"mbox":"http://patchwork.ozlabs.org/series/498655/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219669/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256\n header.s=s110527 header.b=HmDOGogs;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=163.com","phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de","phobos.denx.de;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=163.com header.i=@163.com header.b=\"HmDOGogs\";\n\tdkim-atps=neutral","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=163.com","phobos.denx.de; spf=pass smtp.mailfrom=sgdfkk@163.com"],"Received":["from phobos.denx.de (phobos.denx.de\n [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fnPHw6hY2z1xtJ\n\tfor ; Sat, 04 Apr 2026 03:26:52 +1100 (AEDT)","from h2850616.stratoserver.net (localhost [IPv6:::1])\n\tby phobos.denx.de (Postfix) with ESMTP id 7AC0F84150;\n\tFri, 3 Apr 2026 18:26:05 +0200 (CEST)","by phobos.denx.de (Postfix, from userid 109)\n id 7E05F84120; Fri, 3 Apr 2026 18:25:56 +0200 (CEST)","from m16.mail.163.com (m16.mail.163.com [220.197.31.2])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits))\n (No client certificate requested)\n by phobos.denx.de (Postfix) with ESMTPS id F17DF84129\n for ; Fri, 3 Apr 2026 18:25:52 +0200 (CEST)","from server-e.. 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TqtB/N9trvtcTFi0T8TIo11J4=","From":"sgdfkk@163.com","To":"u-boot@lists.denx.de","Cc":"Du Huanpeng ","Subject":"[PATCH v7 6/7] mips: loongson: add watchdog driver","Date":"Sat, 4 Apr 2026 00:25:40 +0800","Message-ID":"<20260403162541.86608-7-sgdfkk@163.com>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20260403162541.86608-1-sgdfkk@163.com>","References":"<20260403162541.86608-1-sgdfkk@163.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-CM-TRANSID":"PigvCgAnAXQF6s9pHqSgBw--.137S8","X-Coremail-Antispam":"1Uf129KBjvJXoWxZw17AFWkKr1DtryUtF48Xrb_yoWrtw4fpF\n 4Sy34FgrW7tr47WrZ3JayDXFs8C3yY9Fy3tFyxGw1rurnxAF98X395KF9rta97Zry3JrW5\n Zay8KFy8Ga15CrDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2\n 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UBuWLUUUUU=","X-Originating-IP":"[240e:3b0:4805:581::3001]","X-CM-SenderInfo":"xvjgwyrn6rljoofrz/xtbCvw0MY2nP6g3IYQAA31","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"},"content":"From: Du Huanpeng \n\nsupports watchdog in loongson mips embedded SoCs\n\nSigned-off-by: Du Huanpeng \n---\n drivers/watchdog/Kconfig | 8 ++\n drivers/watchdog/Makefile | 1 +\n drivers/watchdog/loongson_wdt.c | 127 ++++++++++++++++++++++++++++++++\n 3 files changed, 136 insertions(+)\n create mode 100644 drivers/watchdog/loongson_wdt.c","diff":"diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig\nindex 416d29d256a..beba5475e03 100644\n--- a/drivers/watchdog/Kconfig\n+++ b/drivers/watchdog/Kconfig\n@@ -214,6 +214,14 @@ config SPL_WDT_GPIO\n \thelp\n \t Support for external watchdog fed by toggling a gpio in SPL.\n \n+config WDT_LOONGSON\n+\tbool \"Loongson MIPS watchdog timer support\"\n+\tdepends on WDT\n+\thelp\n+\t Select this to enable watchdog timer for Loongson SoCs.\n+\t The watchdog timer is stopped when initialized.\n+\t It performs full SoC reset.\n+\n config WDT_MAX6370\n \tbool \"MAX6370 watchdog timer support\"\n \tdepends on WDT\ndiff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile\nindex 02e2674f8af..e9ffb417050 100644\n--- a/drivers/watchdog/Makefile\n+++ b/drivers/watchdog/Makefile\n@@ -33,6 +33,7 @@ obj-$(CONFIG_WDT_DA9063) += da9063-wdt.o\n obj-$(CONFIG_WDT_DAVINCI) += davinci_wdt.o\n obj-$(CONFIG_WDT_FTWDT010) += ftwdt010_wdt.o\n obj-$(CONFIG_$(SPL_TPL_)WDT_GPIO) += gpio_wdt.o\n+obj-$(CONFIG_WDT_LOONGSON) += loongson_wdt.o\n obj-$(CONFIG_WDT_MAX6370) += max6370_wdt.o\n obj-$(CONFIG_WDT_MCF) += mcf_wdt.o\n obj-$(CONFIG_WDT_MESON_GXBB) += meson_gxbb_wdt.o\ndiff --git a/drivers/watchdog/loongson_wdt.c b/drivers/watchdog/loongson_wdt.c\nnew file mode 100644\nindex 00000000000..4d34d70296e\n--- /dev/null\n+++ b/drivers/watchdog/loongson_wdt.c\n@@ -0,0 +1,127 @@\n+// SPDX-License-Identifier: GPL-2.0\n+/*\n+ * Watchdog driver for MediaTek SoCs\n+ *\n+ * Copyright (C) 2018 MediaTek Inc.\n+ * Author: Ryder Lee \n+ *\n+ * based on: drivers/watchdog/mtk_wdt.c\n+ * Copyright (C) 2020-2026 Du Huanpeng \n+ */\n+\n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+\n+struct loongson_wdt_priv {\n+\tvoid __iomem *base;\n+#define WDT_EN\t\t0\n+#define WDT_TIMER\t4\n+#define WDT_SET\t\t8\n+\tulong clock;\n+\tunsigned long timeout;\n+};\n+\n+static int loongson_wdt_reset(struct udevice *dev)\n+{\n+\tstruct loongson_wdt_priv *priv = dev_get_priv(dev);\n+\n+\twritel(priv->timeout, priv->base + WDT_TIMER);\n+\twritel(1, priv->base + WDT_SET);\n+\n+\treturn 0;\n+}\n+\n+static int loongson_wdt_stop(struct udevice *dev)\n+{\n+\tstruct loongson_wdt_priv *priv = dev_get_priv(dev);\n+\n+\twritel(0, priv->base + WDT_EN);\n+\treturn 0;\n+}\n+\n+static int loongson_wdt_expire_now(struct udevice *dev, ulong flags)\n+{\n+\tstruct loongson_wdt_priv *priv = dev_get_priv(dev);\n+\n+\twritel(1, priv->base + WDT_EN);\n+\twritel(1, priv->base + WDT_TIMER);\n+\twritel(1, priv->base + WDT_SET);\n+\n+\thang();\n+\treturn 0;\n+}\n+\n+static int loongson_wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)\n+{\n+\tstruct loongson_wdt_priv *priv = dev_get_priv(dev);\n+\tunsigned int timeout;\n+\n+\ttimeout = U32_MAX / (priv->clock / MSEC_PER_SEC);\n+\n+\tif (timeout < timeout_ms)\n+\t\ttimeout = U32_MAX;\n+\telse\n+\t\ttimeout = timeout_ms * (priv->clock / MSEC_PER_SEC);\n+\n+\tdebug(\"WDT: reload = %08x\\n\", timeout);\n+\n+\twritel(1, priv->base + WDT_EN);\n+\twritel(timeout, priv->base + WDT_TIMER);\n+\twritel(1, priv->base + WDT_SET);\n+\n+\tpriv->timeout = timeout;\n+\n+\treturn 0;\n+}\n+\n+static int loongson_wdt_probe(struct udevice *dev)\n+{\n+\tstruct loongson_wdt_priv *priv = dev_get_priv(dev);\n+\tstruct clk cl;\n+\tulong clock;\n+\n+\tpriv->base = dev_remap_addr(dev);\n+\tif (!priv->base)\n+\t\treturn -ENOENT;\n+\n+\tif (clk_get_by_index(dev, 0, &cl) == 0)\n+\t\tclock = clk_get_rate(&cl);\n+\n+\tdebug(\"WDT: clock = %ld\\n\", clock);\n+\n+\tif (IS_ERR_VALUE(clock)) {\n+\t\tdev_err(dev, \"failed to get rate\\n\");\n+\t\treturn clock;\n+\t}\n+\n+\tpriv->clock = clock;\n+\twritel(0, priv->base + WDT_EN);\n+\treturn 0;\n+}\n+\n+static const struct wdt_ops loongson_wdt_ops = {\n+\t.start = loongson_wdt_start,\n+\t.reset = loongson_wdt_reset,\n+\t.stop = loongson_wdt_stop,\n+\t.expire_now = loongson_wdt_expire_now,\n+};\n+\n+static const struct udevice_id loongson_wdt_ids[] = {\n+\t{ .compatible = \"loongson,ls1c300-wdt\"},\n+\t{}\n+};\n+\n+U_BOOT_DRIVER(loongson_wdt) = {\n+\t.name = \"loongson_wdt\",\n+\t.id = UCLASS_WDT,\n+\t.of_match = loongson_wdt_ids,\n+\t.priv_auto = sizeof(struct loongson_wdt_priv),\n+\t.probe = loongson_wdt_probe,\n+\t.ops = &loongson_wdt_ops,\n+\t.flags = DM_FLAG_PRE_RELOC,\n+};\n","prefixes":["v7","6/7"]}