From mboxrd@z Thu Jan 1 00:00:00 1970 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 B7904C433EF for ; Fri, 4 Feb 2022 09:46:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357454AbiBDJqQ (ORCPT ); Fri, 4 Feb 2022 04:46:16 -0500 Received: from relay10.mail.gandi.net ([217.70.178.230]:56577 "EHLO relay10.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242703AbiBDJqP (ORCPT ); Fri, 4 Feb 2022 04:46:15 -0500 Received: (Authenticated sender: alexandre.belloni@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 3A04324000D; Fri, 4 Feb 2022 09:46:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1643967974; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=GeZ3RTrEGPyDxaCxWgqBxzeCFQNbWVTVIwN4+w/oDeM=; b=CuXaJ2xofz/y/RuNSua2NOHdaZ5uD8u78AmLi3uWgejx5P1SFkDnTyRjvK+4E1g24BXS8O InIVqhWzGfZHtJIdUbssUyEtbNJ+OPc7TM7xx5mGjE/d/TKaK11ecaMAAop7AMT5NpkKBK hNoss69P2NEhe2dJ5jA5ZKZumDCLFX/jCbkYDQGAt6++ICajuVh43Z7n1N/By8RxSlsaGb z7wtwhZQjnhFQiI5GH7wkwzqdHT5TtrKzZ+1kNg8msxsVJaEmiP50NCQLhWezjaOpGkcSm vD4BURSzPIfamySBh0Hz4Iy873bo57P/nDiyCJie5DcFXoHngSwOHRkyau+bsA== Date: Fri, 4 Feb 2022 10:46:14 +0100 From: Alexandre Belloni To: Eugen Hristev Cc: robh+dt@kernel.org, nicolas.ferre@microchip.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, clement.leger@bootlin.com Subject: Re: [PATCH] dt-bindings: microchip: atmel,at91rm9200-tcb: remove mandatory interrupts property Message-ID: References: <20220204081446.474991-1-eugen.hristev@microchip.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220204081446.474991-1-eugen.hristev@microchip.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 04/02/2022 10:14:46+0200, Eugen Hristev wrote: > The timer block can be used only to be read and to measure time in a polling > fashion. This can be used by Linux like this for example, or it can be used > by different projects which do not have interrupt controllers, or do not > wish to enable them (e.g. U-boot). > As DT is ABI, the binding should relate to all possible use cases and describe > the hardware and the requirements. > The interrupt is not a hard requirement for the timer to function in a > specific way. > Thus, choose to remove the interrupts property from the mandatory list of > properties. > The correct hardware description is that the interrupt is present on the IP. Having software behave differently depending on the presence of that property is configuration, not hardware description. > Signed-off-by: Eugen Hristev > --- > .../devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml b/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml > index 597d67fba92f..27f78459b892 100644 > --- a/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml > +++ b/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml > @@ -134,7 +134,6 @@ allOf: > required: > - compatible > - reg > - - interrupts > - clocks > - clock-names > - '#address-cells' > -- > 2.25.1 > -- Alexandre Belloni, co-owner and COO, Bootlin Embedded Linux and Kernel engineering https://bootlin.com