From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.cjdns.fr (mail.cjdns.fr [5.135.140.105]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 81FD43C3438; Thu, 15 Oct 2026 16:54:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=5.135.140.105 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792083265; cv=none; b=HDplJq6MOlGFMxKZvky/1I3gJH43OOR2rAmwVlfujUesJiYYGc7xacsLlDyxklE74FKS4jYz1mqWmwS5gQVsF3x2OvnULnTnGd2zs4M59v/9l0HczKO1sh56gBHns5faxcRFAOrDl3jZ91icipshpgVVIyNWHK3uUamF/JFpbJQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792083265; c=relaxed/simple; bh=co9V/k+U042DO1dmTCmT+Cj7LtUBlzGxOv3CFdL8DLo=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=Ui6j0ESP1vM0DeSv9BMCLMi1ZTdFkMf/lRBPwRDUior4lMgqah1qdjnPwEgGpFv3wItNr10tS7nlSKn5YMOP2orgKf96t2R1PfnUeyLKE93yu6CP2et2hsUvSllulSlfRdFzffLrFka3UtULrh7RaQjS/yfMVgcdlDs8DMdiBiU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=cjdns.fr; spf=none smtp.mailfrom=cjdns.fr; dkim=pass (2048-bit key) header.d=cjdns.fr header.i=@cjdns.fr header.b=Kx1ALtDn; arc=none smtp.client-ip=5.135.140.105 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=cjdns.fr Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=cjdns.fr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=cjdns.fr header.i=@cjdns.fr header.b="Kx1ALtDn" Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 746F65B0AFA; Thu, 15 Oct 2026 18:54:08 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cjdns.fr; s=dkim; t=1792083250; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding; bh=AosH3Qe+WjsPSkKk8tTDcpEMWgbTa12rYaYH58Q/Onk=; b=Kx1ALtDnEhr2lvHDF3RDtb6mzQ5iZ+Fjx2BkmPma6i8jqZueFrJDSExoN0ICSTyDJEluHV SUw2B+CT2DDvn1a7nW73u5qqhoRHf31w0Z4du7KO7+LeTZcLOVUo/WNLM4xTfO/GTP77xe QV8V/XJK6pIFQ526X9glQRSarSjr27sMPhze0XJMh0YFCeYBun4gQgAkhokj3tVqgZ6zBL umO+NVVzV+BY/g3xm5kmdL/8OI7NgCKPeuC+7fHcLMVeTHWw7I12ED92SKgcmzIkGDRFJE R9MuWSO8L9Db/1KbFCWm5usWij2vUoVlYzD2/XfZRKFj0cb4NaUQzIxR4v/i8w== From: Caleb James DeLisle To: linux-mips@vger.kernel.org Cc: conor+dt@kernel.org, daniel.lezcano@kernel.org, devicetree@vger.kernel.org, krzk+dt@kernel.org, linux-kernel@vger.kernel.org, naseefkm@gmail.com, robh@kernel.org, tglx@kernel.org, grandmaster@al2klimov.de, Caleb James DeLisle Subject: [PATCH v11 0/5] clocksource/timer-econet-en751221: Support irq number per timer Date: Thu, 15 Oct 2026 16:53:59 +0000 Message-Id: <20261015165404.519741-1-cjd@cjdns.fr> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 This timer appears on both the EcoNet EN751221 (34Kc) and on the EN751627 / EN7528 (1004Kc) SoCs. On the 34Kc the interrupt controller uses a percpu interrupt while on the others it uses an individual IRQ number for each CPU timer. Add support for EN751627 and EN7528. Add support for IRQ number for each CPU timer under the econet,en751627-timer compatible. Changes since v10: * Unconditionally setup clock_event_device for all possible CPUs so that error log will not access uninitialized data. Identified by: Link: https://sashiko.dev/#/patchset/20261015145331.453837-1-cjd@cjdns.fr?part=4 Changes since v9: * Use dynamic size irq and iomem block arrays based on DT * Update commit message explicating that CPU hotplug is intentionally not supported Changes since v8: * Actually git commit changes from v7. Guys, I sincerely apologize for the spam. Changes since v7: * Use %zd for logging with ARRAY_SIZE to avoid compiler errors if test-compiling on 64 bit. Changes since v6: * Rebase to tip/timers/core (base-commit below) Changes since v5: * Integrate patch fix refcount leak from: Link: https://lore.kernel.org/linux-mips/20260526184105.18962-3-grandmaster@al2klimov.de/ * NULL econet_timer.membase after unmapping * NULL check dev->event_handler in case clockevents_config_and_register failed to fully register. * v5: https://lore.kernel.org/linux-mips/20260516233943.49502-1-cjd@cjdns.fr/ Changes from v4: * Fixed incorrect compatible in DT schema * Bracing in out_irq_free if statement * I did not move cpuhp_setup_state past the point of no return * v4: https://lore.kernel.org/linux-mips/20260516215720.4160831-1-cjd@cjdns.fr Changes from v3: * off-by-one in out_irq_free * Gracefully fail if too many address resources are provided in the DT * Allow fewer actual timers than num_possible_cpus, as long as they never start * v3: https://lore.kernel.org/linux-mips/20260516182648.3987792-1-cjd@cjdns.fr v3 note: I decided to take this patchset in a slightly different direction from v2. There is a certain amount of initialization that once it has run, it cannot be reverted in case of error. The original driver init was a mixture of revertible and non-revertible code which made it too easy for code which is designed with best practices in mind to in fact introduce a bug. Therefore I start by making the init process more legible but without any business logic changes, then fix a race condition by keeping IRQ disabled until after cevt is setup, then finally add non-percpu IRQ support. * v2: https://lore.kernel.org/linux-mips/20260514000601.3430262-1-cjd@cjdns.fr Changes from v1: * Split changes over 3 refactoring patches + main patch * Remove driver discussion from dt commit message * v1: https://lore.kernel.org/linux-mips/20260416175101.958073-1-cjd@cjdns.fr/ Caleb James DeLisle (5): dt-bindings: timer: econet: Update EN751627 for multi-IRQ clocksource/timer-econet-en751221: Init teardown on error if possible clocksource/timer-econet-en751221: Disable IRQ until cevt registered clocksource/timer-econet-en751221: Support EN751627 without percpu IRQ clocksource/timer-econet-en751221: Do not use NR_CPUS for resource array size .../bindings/timer/econet,en751221-timer.yaml | 31 ++- drivers/clocksource/timer-econet-en751221.c | 206 ++++++++++++++---- 2 files changed, 181 insertions(+), 56 deletions(-) base-commit: c40b76c8cf580466d9e56223f7f74beecc165480 -- 2.39.5