From patchwork Thu Oct 7 12:48:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 12541779 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CFBDC433F5 for ; Thu, 7 Oct 2021 12:49:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F28CE60FD9 for ; Thu, 7 Oct 2021 12:49:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241377AbhJGMvE (ORCPT ); Thu, 7 Oct 2021 08:51:04 -0400 Received: from muru.com ([72.249.23.125]:41860 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233158AbhJGMvE (ORCPT ); Thu, 7 Oct 2021 08:51:04 -0400 Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id 77FB58131; Thu, 7 Oct 2021 12:49:39 +0000 (UTC) From: Tony Lindgren To: linux-kernel@vger.kernel.org Cc: Rob Herring , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-omap@vger.kernel.org, Geert Uytterhoeven , Rob Herring , Simon Horman , Suman Anna Subject: [PATCH 1/3] dt-bindings: bus: simple-pm-bus: Make clocks and power-domains optional Date: Thu, 7 Oct 2021 15:48:56 +0300 Message-Id: <20211007124858.44011-2-tony@atomide.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211007124858.44011-1-tony@atomide.com> References: <20211007124858.44011-1-tony@atomide.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Clocks and power domains are not required by the simple-pm-bus driver. There are buses with read-only registers for clocks and power domains that are always on. Even without clocks and power domains configured, simple-pm-bus is still different from simple-bus as simple-pm-bus enables runtime PM for the bus driver. Let's update the binding accordingly as this remove the related warnings for dt_binding_check for omaps. Cc: Geert Uytterhoeven Cc: Rob Herring Cc: Simon Horman Cc: Suman Anna Signed-off-by: Tony Lindgren --- .../devicetree/bindings/bus/simple-pm-bus.yaml | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/Documentation/devicetree/bindings/bus/simple-pm-bus.yaml b/Documentation/devicetree/bindings/bus/simple-pm-bus.yaml --- a/Documentation/devicetree/bindings/bus/simple-pm-bus.yaml +++ b/Documentation/devicetree/bindings/bus/simple-pm-bus.yaml @@ -13,10 +13,9 @@ description: | A Simple Power-Managed Bus is a transparent bus that doesn't need a real driver, as it's typically initialized by the boot loader. - However, its bus controller is part of a PM domain, or under the control - of a functional clock. Hence, the bus controller's PM domain and/or - clock must be enabled for child devices connected to the bus (either - on-SoC or externally) to function. + However, its bus controller is typically part of a PM domain, or under + the control of a functional clock. Without PM domain or functional clock, + it still enables runtime PM for the bus driver unlike "simple-bus". While "simple-pm-bus" follows the "simple-bus" set of properties, as specified in the Devicetree Specification, it is not an extension of @@ -43,10 +42,10 @@ properties: clocks: true # Functional clocks - # Required if power-domains is absent, optional otherwise + # Typically used if power-domains is absent power-domains: - # Required if clocks is absent, optional otherwise + # Typically used if clocks is absent minItems: 1 required: @@ -55,12 +54,6 @@ required: - '#size-cells' - ranges -anyOf: - - required: - - clocks - - required: - - power-domains - additionalProperties: true examples: