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GET /api/1.2/patches/2221415/?format=api
{ "id": 2221415, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2221415/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260408-hpe-gsc-upstream-v1-4-2be1fb7cbbfc@hpe.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/1.2/projects/18/?format=api", "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, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260408-hpe-gsc-upstream-v1-4-2be1fb7cbbfc@hpe.com>", "list_archive_url": null, "date": "2026-04-08T19:24:16", "name": "[4/9] watchdog: Add HPE GSC watchdog driver", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "daddd64442996aa434cdcf86f0e460aed6298458", "submitter": { "id": 93099, "url": "http://patchwork.ozlabs.org/api/1.2/people/93099/?format=api", "name": "Jorge Cisneros", "email": "jorge.cisneros@hpe.com" }, "delegate": { "id": 3651, "url": "http://patchwork.ozlabs.org/api/1.2/users/3651/?format=api", "username": "trini", "first_name": "Tom", "last_name": "Rini", "email": "trini@ti.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260408-hpe-gsc-upstream-v1-4-2be1fb7cbbfc@hpe.com/mbox/", "series": [ { "id": 499288, "url": "http://patchwork.ozlabs.org/api/1.2/series/499288/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=499288", "date": "2026-04-08T19:24:17", "name": "arm: hpe: Add HPE GSC (Gen12) BMC SoC support", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499288/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2221415/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2221415/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": 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DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,\n RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,\n RCVD_IN_VALIDITY_CERTIFIED_BLOCKED,RCVD_IN_VALIDITY_RPBL_BLOCKED,\n SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.2", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=hpe.com; h=cc\n :content-transfer-encoding:content-type:date:from:in-reply-to\n :message-id:mime-version:references:subject:to; s=pps0720; bh=Fa\n dC60KT/B5h2aPSJuhItBgpnUYaL6NRPb8xrgcRRh8=; b=nSVqmSya2A0Pnu4wyx\n FSPjEPuuXT1F34a9yVpsPBBsjMPs1EABXbiokpyowPDwZ5q2UK6c8AKweuunylHb\n DTQ9p1RLhicLGQnP33oPWk0fOCm2Afs16sOzJ6SH4Lh0pcgzK4crp4vW3zrEcpt+\n CX1vhLmR9pgvAicVsFMrQyCF3njWbweQ+tf28eyq3tKOeDFJ90QJNPmmjs5hKpZ5\n rFe++uGPjlO0Ocip4x/Nk6vrgOPiynp+s8yahBzSfgxtk6UUd8e7kf4u0zi5aEmQ\n YBqokpkwr4Czr3IU7D3zB34/aRXStIRt1gQyVy4S5cNDWvwDHsEj07hqLkI1VVkN\n ygqw==", "From": "Jorge Cisneros <jorge.cisneros@hpe.com>", "Date": "Wed, 08 Apr 2026 19:24:16 +0000", "Subject": "[PATCH 4/9] watchdog: Add HPE GSC watchdog driver", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260408-hpe-gsc-upstream-v1-4-2be1fb7cbbfc@hpe.com>", "References": "<20260408-hpe-gsc-upstream-v1-0-2be1fb7cbbfc@hpe.com>", "In-Reply-To": "<20260408-hpe-gsc-upstream-v1-0-2be1fb7cbbfc@hpe.com>", "To": "u-boot@lists.denx.de", "Cc": "Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>,\n Tom Rini <trini@konsulko.com>, Jean-Marie Verdun <verdun@hpe.com>,\n Nick Hawkins <nick.hawkins@hpe.com>,\n Casey Connolly <casey.connolly@linaro.org>, Anshul Dalal <anshuld@ti.com>,\n Tien Fong Chee <tien.fong.chee@altera.com>, Peng Fan <peng.fan@nxp.com>,\n Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com>,\n Tingting Meng <tingting.meng@altera.com>, Alice Guo <alice.guo@nxp.com>,\n Quentin Schulz <quentin.schulz@cherry.de>,\n Ilias Apalodimas <ilias.apalodimas@linaro.org>,\n Tony Dinh <mibodhi@gmail.com>,\n Marek Vasut <marek.vasut+renesas@mailbox.org>,\n Stefan Roese <stefan.roese@mailbox.org>,\n Svyatoslav Ryhel <clamor95@gmail.com>,\n Patrice Chotard <patrice.chotard@foss.st.com>,\n Mattijs Korpershoek <mkorpershoek@kernel.org>,\n Shmuel Leib Melamud <smelamud@redhat.com>,\n Lukasz Majewski <lukma@nabladev.com>,\n Sumit Garg <sumit.garg@oss.qualcomm.com>,\n Chen-Yu Tsai <wens@kernel.org>, Justin Klaassen <justin@tidylabs.net>,\n Neha Malcom Francis <n-francis@ti.com>,\n Jamie Gibbons <jamie.gibbons@microchip.com>,\n Leo Yu-Chi Liang <ycliang@andestech.com>,\n Jerome Forissier <jerome.forissier@arm.com>,\n Simon Glass <sjg@chromium.org>,\n Neil Armstrong <neil.armstrong@linaro.org>, Yao Zi <me@ziyao.cc>,\n Kuan-Wei Chiu <visitorckw@gmail.com>,\n \"Kory Maincent (TI.com)\" <kory.maincent@bootlin.com>,\n Raymond Mao <raymond.mao@riscstar.com>,\n Philip Molloy <philip.molloy@analog.com>,\n Jorge Cisneros <jorge.cisneros@hpe.com>", "X-Mailer": "b4 0.15.1", "X-Proofpoint-Spam-Details-Enc": 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"-1", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-08_05,2026-04-08_01,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n malwarescore=0 suspectscore=0 impostorscore=0 bulkscore=0 clxscore=1015\n lowpriorityscore=0 phishscore=0 spamscore=0 priorityscore=1501 adultscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604080181", "X-Mailman-Approved-At": "Thu, 09 Apr 2026 15:00:51 +0200", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.39", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<https://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>", "X-Virus-Scanned": "clamav-milter 0.103.8 at phobos.denx.de", "X-Virus-Status": "Clean" }, "content": "Add watchdog driver for the HPE GSC SoC. The GSC watchdog uses two\nseparate register regions: a counter register and a control register.\nWriting the counter value resets the watchdog timer, while writing to\nthe control register enables or disables the watchdog.\n\nSupported operations: start, stop, reset, and expire_now.\n\nSigned-off-by: Jorge Cisneros <jorge.cisneros@hpe.com>\n---\n drivers/watchdog/Kconfig | 7 +++\n drivers/watchdog/Makefile | 1 +\n drivers/watchdog/gsc_wdt.c | 110 +++++++++++++++++++++++++++++++++++++++++++++\n 3 files changed, 118 insertions(+)", "diff": "diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig\nindex 35ae7d106b1..692a7eb4304 100644\n--- a/drivers/watchdog/Kconfig\n+++ b/drivers/watchdog/Kconfig\n@@ -195,6 +195,13 @@ config WDT_DAVINCI\n \t Select this to enable the watchdog timer for DaVinci SoCs such as the\n \t OMAP-L138.\n \n+config WDT_GSC\n+\tbool \"HPE GSC watchdog support\"\n+\tdepends on WDT\n+\thelp\n+\t Enable support for the watchdog timer in HPE GSC BMC SoC\n+\t used in HPE Gen12 servers.\n+\n config WDT_GPIO\n \tbool \"External gpio watchdog support\"\n \tdepends on WDT\ndiff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile\nindex 02e2674f8af..f7397e03527 100644\n--- a/drivers/watchdog/Makefile\n+++ b/drivers/watchdog/Makefile\n@@ -32,6 +32,7 @@ obj-$(CONFIG_WDT_CDNS) += cdns_wdt.o\n obj-$(CONFIG_WDT_DA9063) += da9063-wdt.o\n obj-$(CONFIG_WDT_DAVINCI) += davinci_wdt.o\n obj-$(CONFIG_WDT_FTWDT010) += ftwdt010_wdt.o\n+obj-$(CONFIG_WDT_GSC) += gsc_wdt.o\n obj-$(CONFIG_$(SPL_TPL_)WDT_GPIO) += gpio_wdt.o\n obj-$(CONFIG_WDT_MAX6370) += max6370_wdt.o\n obj-$(CONFIG_WDT_MCF) += mcf_wdt.o\ndiff --git a/drivers/watchdog/gsc_wdt.c b/drivers/watchdog/gsc_wdt.c\nnew file mode 100644\nindex 00000000000..b535f47e052\n--- /dev/null\n+++ b/drivers/watchdog/gsc_wdt.c\n@@ -0,0 +1,110 @@\n+// SPDX-License-Identifier: GPL-2.0+\n+/* Copyright (C) 2022-2025 Hewlett Packard Enterprise Development LP */\n+\n+#include <dm.h>\n+#include <errno.h>\n+#include <log.h>\n+#include <wdt.h>\n+#include <asm/io.h>\n+#include <linux/err.h>\n+\n+#define MASK_WDGCS_ENABLE\tBIT(0)\n+#define MASK_WDGCS_RELOAD\tBIT(2)\n+#define MASK_WDGCS_NMIEN\tBIT(3)\n+#define MASK_WDGCS_WARN\t\tBIT(7)\n+\n+#define WDT_MAX_TIMEOUT_MS\t655350\n+#define SECS_TO_WDOG_TICKS(x)\t((x) * 100)\n+\n+struct gsc_wdt_priv {\n+\tvoid __iomem *counter;\n+\tvoid __iomem *control;\n+};\n+\n+static int gsc_wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)\n+{\n+\tstruct gsc_wdt_priv *priv = dev_get_priv(dev);\n+\tu8 val;\n+\tu16 timeout_secs;\n+\n+\tif (timeout_ms > WDT_MAX_TIMEOUT_MS)\n+\t\ttimeout_ms = WDT_MAX_TIMEOUT_MS;\n+\telse if (timeout_ms == 0)\n+\t\ttimeout_ms = CONFIG_WATCHDOG_TIMEOUT_MSECS;\n+\n+\ttimeout_secs = timeout_ms / 1000;\n+\twritew(SECS_TO_WDOG_TICKS(timeout_secs), priv->counter);\n+\n+\tval = readb(priv->control);\n+\tval |= MASK_WDGCS_ENABLE;\n+\twriteb(val, priv->control);\n+\n+\treturn 0;\n+}\n+\n+static int gsc_wdt_stop(struct udevice *dev)\n+{\n+\tstruct gsc_wdt_priv *priv = dev_get_priv(dev);\n+\tu8 val;\n+\n+\tval = readb(priv->control);\n+\tval &= ~MASK_WDGCS_ENABLE;\n+\twriteb(val, priv->control);\n+\n+\treturn 0;\n+}\n+\n+static int gsc_wdt_reset(struct udevice *dev)\n+{\n+\tstruct gsc_wdt_priv *priv = dev_get_priv(dev);\n+\tu8 val;\n+\n+\tval = readb(priv->control);\n+\tval |= MASK_WDGCS_RELOAD;\n+\twriteb(val, priv->control);\n+\n+\treturn 0;\n+}\n+\n+static int gsc_wdt_expire_now(struct udevice *dev, ulong flags)\n+{\n+\treturn gsc_wdt_start(dev, 1, flags);\n+}\n+\n+static const struct wdt_ops gsc_wdt_ops = {\n+\t.start = gsc_wdt_start,\n+\t.reset = gsc_wdt_reset,\n+\t.stop = gsc_wdt_stop,\n+\t.expire_now = gsc_wdt_expire_now,\n+};\n+\n+static const struct udevice_id gsc_wdt_ids[] = {\n+\t{ .compatible = \"hpe,gsc-wdt\" },\n+\t{ }\n+};\n+\n+static int gsc_wdt_probe(struct udevice *dev)\n+{\n+\tstruct gsc_wdt_priv *priv = dev_get_priv(dev);\n+\n+\tpriv->counter = dev_remap_addr_index(dev, 0);\n+\tif (!priv->counter)\n+\t\treturn -EINVAL;\n+\n+\tpriv->control = dev_remap_addr_index(dev, 1);\n+\tif (!priv->control)\n+\t\treturn -EINVAL;\n+\n+\tgsc_wdt_stop(dev);\n+\n+\treturn 0;\n+}\n+\n+U_BOOT_DRIVER(gsc_wdt) = {\n+\t.name = \"gsc_wdt\",\n+\t.id = UCLASS_WDT,\n+\t.of_match = gsc_wdt_ids,\n+\t.probe = gsc_wdt_probe,\n+\t.priv_auto = sizeof(struct gsc_wdt_priv),\n+\t.ops = &gsc_wdt_ops,\n+};\n", "prefixes": [ "4/9" ] }