From patchwork Thu Aug 2 11:49:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 952699 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=infradead.org header.i=@infradead.org header.b="sSAX9YR/"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41h7mr2YwRz9s2g for ; Thu, 2 Aug 2018 21:51:24 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732273AbeHBNlJ (ORCPT ); Thu, 2 Aug 2018 09:41:09 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:38838 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732269AbeHBNlJ (ORCPT ); Thu, 2 Aug 2018 09:41:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=KmtehZBvQ8FHrHdjfV2nyNHi6QaRR6lTpkmbGqVhkOw=; b=sSAX9YR/EaTonCaRf7vNEgwmw KP69vG4OfEv0NRDcdkTfwzgPcEB0NQwSJxnTvMJE/KtPNYg1nqYGjAeOwi6lO7mPKxkgaZn+aeqqo ThHzOSSk0aYb0eR/1i1QcW+Gp4ZXefa+6Ojwy0uGokpuZ//14EJH10848bx221n0ueKhHHou2WX3A YsV6hOQqAl8YvRFMRwlDia+yvNFKXGFId0tU/wnGUDk3WT7jmhRA2zGGqJS1ecGkQLRmdkLZflf5g 499lkTI0JyHCYRMgi9hiHm6Vw4/qnO/tERq/FxMjBtJSFoIDYFMq8RRJh/1exfwo4w//apFJ+4eRW HHxAnsqdA==; Received: from clnet-p19-102.ikbnet.co.at ([83.175.77.102] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1flC7U-00058m-BW; Thu, 02 Aug 2018 11:50:17 +0000 From: Christoph Hellwig To: tglx@linutronix.de, palmer@sifive.com, jason@lakedaemon.net, marc.zyngier@arm.com, robh+dt@kernel.org, mark.rutland@arm.com Cc: anup@brainfault.org, atish.patra@wdc.com, devicetree@vger.kernel.org, aou@eecs.berkeley.edu, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, shorne@gmail.com Subject: [PATCH 01/11] dt-bindings: Correct RISC-V's timebase-frequency Date: Thu, 2 Aug 2018 13:49:58 +0200 Message-Id: <20180802115008.4031-2-hch@lst.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180802115008.4031-1-hch@lst.de> References: <20180802115008.4031-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Palmer Dabbelt Someone must have read the device tree specification incorrectly, because we were putting timebase-frequency in the wrong place. This corrects the issue, moving it from / { cpus { timebase-frequency = X; } } to / { cpus { cpu@0 { timebase-frequency = X; } } } This is great, because the timer's frequency should really be a per-cpu quantity on RISC-V systems since there's a timer per CPU. This should lead to some cleanups in our timer driver. Signed-off-by: Palmer Dabbelt Signed-off-by: Christoph Hellwig Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/riscv/cpus.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/riscv/cpus.txt b/Documentation/devicetree/bindings/riscv/cpus.txt index adf7b7af5dc3..b0b038d6c406 100644 --- a/Documentation/devicetree/bindings/riscv/cpus.txt +++ b/Documentation/devicetree/bindings/riscv/cpus.txt @@ -93,9 +93,9 @@ Linux is allowed to run on. cpus { #address-cells = <1>; #size-cells = <0>; - timebase-frequency = <1000000>; cpu@0 { clock-frequency = <1600000000>; + timebase-frequency = <1000000>; compatible = "sifive,rocket0", "riscv"; device_type = "cpu"; i-cache-block-size = <64>; @@ -113,6 +113,7 @@ Linux is allowed to run on. }; cpu@1 { clock-frequency = <1600000000>; + timebase-frequency = <1000000>; compatible = "sifive,rocket0", "riscv"; d-cache-block-size = <64>; d-cache-sets = <64>; @@ -145,6 +146,7 @@ Example: Spike ISA Simulator with 1 Hart This device tree matches the Spike ISA golden model as run with `spike -p1`. cpus { + timebase-frequency = <1000000>; cpu@0 { device_type = "cpu"; reg = <0x00000000>;