From patchwork Thu Apr 2 10:48:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 202523 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D13A1C43331 for ; Thu, 2 Apr 2020 10:52:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A8F4C20787 for ; Thu, 2 Apr 2020 10:52:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=flygoat.com header.i=jiaxun.yang@flygoat.com header.b="GeOOCFG5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387610AbgDBKwJ (ORCPT ); Thu, 2 Apr 2020 06:52:09 -0400 Received: from sender3-op-o12.zoho.com.cn ([124.251.121.243]:17858 "EHLO sender3-op-o12.zoho.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728612AbgDBKwI (ORCPT ); Thu, 2 Apr 2020 06:52:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1585824683; s=mail; d=flygoat.com; i=jiaxun.yang@flygoat.com; h=From:To:Cc:Message-ID:Subject:Date:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Content-Type; bh=4OyVuFjPKoQvzE6pgWT/Zq5DGn/7AUv6X7kRDxmswbo=; b=GeOOCFG5cmZpwhwv2DOnN/XuFX/fYvszdnwJQ5F/LWu9E7KtqWDvR97Q4tzRadA7 OBODACYRcuhyDLkLf2bFXp6RfHhUCBRpKR20JG+ADyh5laZmvW279W1ADxIbPLP0P3B 4JWkc4JPUuWFf8CWPgPqD0UksTRT7mH5FNKWh4x8= Received: from localhost.localdomain (39.155.141.144 [39.155.141.144]) by mx.zoho.com.cn with SMTPS id 158582468178236.83295531682825; Thu, 2 Apr 2020 18:51:21 +0800 (CST) From: Jiaxun Yang To: linux-mips@vger.kernel.org Cc: Jiaxun Yang , Thomas Bogendoerfer , Rob Herring , Huacai Chen , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Message-ID: <20200402104851.368465-5-jiaxun.yang@flygoat.com> Subject: [PATCH 5/5] MIPS: Loongson64: Mark RS780 HPET as broken Date: Thu, 2 Apr 2020 18:48:43 +0800 X-Mailer: git-send-email 2.26.0.rc2 In-Reply-To: <20200402104851.368465-1-jiaxun.yang@flygoat.com> References: <20200402104851.368465-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 X-ZohoCNMailClient: External Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This driver is using some dangerous hack to set MMIO address for HPET, which might break systems with other kinds of PCH. Also, as Loongson-3 cpufreq driver never appeared in mainline, this driver rarely got used. So we temporarily mark it as broken until we find a better solution. Signed-off-by: Jiaxun Yang --- arch/mips/loongson64/Kconfig | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/mips/loongson64/Kconfig b/arch/mips/loongson64/Kconfig index c386b8a3c753..16e6acab8cce 100644 --- a/arch/mips/loongson64/Kconfig +++ b/arch/mips/loongson64/Kconfig @@ -4,14 +4,12 @@ if MACH_LOONGSON64 config RS780_HPET bool "RS780/SBX00 HPET Timer" depends on MACH_LOONGSON64 + depends on BROKEN select MIPS_EXTERNAL_TIMER help This option enables the hpet timer of AMD RS780/SBX00. - If you want to enable the Loongson3 CPUFreq Driver, Please enable - this option at first, otherwise, You will get wrong system time. - - If unsure, say Yes. - + Note: This driver is doing some dangerous hack. Please only enable + it on RS780 systems. endif # MACH_LOONGSON64