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{ "id": 2219596, "url": "http://patchwork.ozlabs.org/api/covers/2219596/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pwm/cover/cover.1775223441.git.andrea.porta@suse.com/", "project": { "id": 38, "url": "http://patchwork.ozlabs.org/api/projects/38/?format=api", "name": "Linux PWM development", "link_name": "linux-pwm", "list_id": "linux-pwm.vger.kernel.org", "list_email": "linux-pwm@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<cover.1775223441.git.andrea.porta@suse.com>", "list_archive_url": null, "date": "2026-04-03T14:31:53", "name": "[0/3] Add RP1 PWM controller support", "submitter": { "id": 88172, "url": "http://patchwork.ozlabs.org/api/people/88172/?format=api", "name": "Andrea della Porta", "email": "andrea.porta@suse.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-pwm/cover/cover.1775223441.git.andrea.porta@suse.com/mbox/", "series": [ { "id": 498637, "url": "http://patchwork.ozlabs.org/api/series/498637/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pwm/list/?series=498637", "date": "2026-04-03T14:31:53", "name": "Add RP1 PWM controller support", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498637/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2219596/comments/", "headers": { "Return-Path": "\n <linux-pwm+bounces-8469-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pwm@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=suse.com header.i=@suse.com header.a=rsa-sha256\n header.s=google header.b=O27kKWwe;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; 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This is necessary to operate the\ncooling fan connected to one of the PWM channels.\n\nThe tachometer pin for the fan speed is managed by the firmware\nrunning on the RP1's M-core. It uses the PHASE2 register\nto report the RPM, which is then exported by this driver as a\nhwmon device.\n\nSubsequent patches will add the CPU thermal zone, which acts as\na consumer of the PWM device.\n\nBest regards,\nAndrea\n\nNaushir Patuck (2):\n dt-bindings: pwm: Add Raspberry Pi RP1 PWM controller\n pwm: rp1: Add RP1 PWM controller driver\n\nStanimir Varbanov (1):\n arm64: dts: broadcom: rp1: Add PWM node\n\n .../bindings/pwm/raspberrypi,rp1-pwm.yaml | 52 ++++\n .../boot/dts/broadcom/bcm2712-rpi-5-b.dts | 12 +\n arch/arm64/boot/dts/broadcom/rp1-common.dtsi | 10 +\n drivers/pwm/Kconfig | 10 +\n drivers/pwm/Makefile | 1 +\n drivers/pwm/pwm-rp1.c | 244 ++++++++++++++++++\n 6 files changed, 329 insertions(+)\n create mode 100644 Documentation/devicetree/bindings/pwm/raspberrypi,rp1-pwm.yaml\n create mode 100644 drivers/pwm/pwm-rp1.c" }