From nobody Sat Apr 11 03:54:33 2026 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 E8190C25B0E for ; Tue, 16 Aug 2022 21:15:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237634AbiHPVPq (ORCPT ); Tue, 16 Aug 2022 17:15:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237567AbiHPVPW (ORCPT ); Tue, 16 Aug 2022 17:15:22 -0400 Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C1CCF88DF6 for ; Tue, 16 Aug 2022 14:15:05 -0700 (PDT) Received: by mail-wr1-x42b.google.com with SMTP id bu15so5553995wrb.7 for ; Tue, 16 Aug 2022 14:15:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc; bh=vfBwzF4rBTQWX76kzjBGU8pHOvCFE0ZGsFmgL4Ysnj8=; b=YTgW1xsIf6ErLzD2iA8TpuGl1vu1Jg42HLk63//faqV0F0fGxWnr8xyqH4xhxe6GMM jkXIZPysqJ4iIQEKHm26iMOIp0zNxHP6T5eoPabQlsrh11ohV/jjX0ZI7LTeRGiQ20kI 2afGCx3PzyvpI6PWWEdsf8kmYHO1vzWqyOAPVkQ3rL/YnJYyHhU9CMX3J+IqvMS2ht/g qz0jkwPpqrmR8bt581eEdjqe0PkcYhuX69DkBXsreoxkBYhVVoRtU6qvQRjN4DchphpT B9VEJVdoI1guO9Flxt7ivU2j4GdqaILVHiJVyc65NPsUEobDvW6ThpolTeAbpRh6ALQG X7jQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc; bh=vfBwzF4rBTQWX76kzjBGU8pHOvCFE0ZGsFmgL4Ysnj8=; b=39uz0D0YI2o7KTwplq3aodgkeOnGEkjBLhm00ICcz1tR8gDptT/bB4ygtPABHP6Fe/ +mwzyLvszLmVWpOIIZ7ZpNlmxUcAS9ees6sMNa/9IxNl1QDqKawwVTERbiwh45JIx/9t IQpXZksy+3zFvwKD8zQKwf3oh+xXFdTCCE9RmANhTrfEdfgAFYvqLRuU9VSkwvdlctvE v0hc5WepyYdllwCYy+2ldQG/k8DDQk5hPHwMyn6TPsYNOAAnBRQfp4o4gghxQHCcS+oE 7jxspOr8G4OPias1ZhduhHs59G0+w7CiAFZRkUA4cdUJx/DAqF3AHKd4tkurmCi8efbi AOnQ== X-Gm-Message-State: ACgBeo3W5+m4m4Ut7Kddnw3Y6jVDjymDoPnmNJZ5JAWzMUzyNkbQGAzB QVsHDspMqXSAVio28FCP0IUYSA== X-Google-Smtp-Source: AA6agR5yZXOyGj6Ixhwe3p4B5VxRBMFdbaBa9BYBCEq36I0L5rcwum9l7q5l5QZuw2rYF7R1IC+Luw== X-Received: by 2002:a05:6000:1545:b0:220:61fa:64a with SMTP id 5-20020a056000154500b0022061fa064amr13124840wry.174.1660684503637; Tue, 16 Aug 2022 14:15:03 -0700 (PDT) Received: from rainbowdash.office.codethink.co.uk ([167.98.27.226]) by smtp.gmail.com with ESMTPSA id r4-20020a1c4404000000b003a3170a7af9sm23913wma.4.2022.08.16.14.15.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Aug 2022 14:15:03 -0700 (PDT) From: Ben Dooks To: linux-pwm@vger.kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Lee Jones , u.kleine-koenig@pengutronix.de, Thierry Reding , Krzysztof Kozlowski , Greentime Hu , jarkko.nikula@linux.intel.com, William Salmon , Jude Onyenegecha , Ben Dooks Subject: [RFC v4 09/10] pwm: dwc: add snps,pwm-number to limit pwm count Date: Tue, 16 Aug 2022 22:14:53 +0100 Message-Id: <20220816211454.237751-10-ben.dooks@sifive.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220816211454.237751-1-ben.dooks@sifive.com> References: <20220816211454.237751-1-ben.dooks@sifive.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add snps,pwm-number property to indicate if the block does not have all 8 of the PWM blocks. Not sure if this should be a general PWM property consider optional for all PWM types, so have added a specific one here (there is only one other controller with a property for PWM count at the moment) Signed-off-by: Ben Dooks --- drivers/pwm/pwm-dwc-of.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/pwm/pwm-dwc-of.c b/drivers/pwm/pwm-dwc-of.c index d18fac287325..65c7e6621bba 100644 --- a/drivers/pwm/pwm-dwc-of.c +++ b/drivers/pwm/pwm-dwc-of.c @@ -21,12 +21,20 @@ static int dwc_pwm_plat_probe(struct platform_device *p= dev) { struct device *dev =3D &pdev->dev; struct dwc_pwm *dwc; + u32 nr_pwm; int ret; =20 dwc =3D dwc_pwm_alloc(dev); if (!dwc) return -ENOMEM; =20 + if (!device_property_read_u32(dev, "snps,pwm-number", &nr_pwm)) { + if (nr_pwm > DWC_TIMERS_TOTAL) + dev_err(dev, "too many PWMs specified (%d)\n", nr_pwm); + else + dwc->chip.npwm =3D nr_pwm; + } + dwc->base =3D devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(dwc->base)) return dev_err_probe(dev, PTR_ERR(dwc->base), --=20 2.35.1