From patchwork Sun May 30 17:17:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Cercueil X-Patchwork-Id: 12288393 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 536C6C47092 for ; Sun, 30 May 2021 17:18:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3704361090 for ; Sun, 30 May 2021 17:18:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229873AbhE3RUP (ORCPT ); Sun, 30 May 2021 13:20:15 -0400 Received: from aposti.net ([89.234.176.197]:37756 "EHLO aposti.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229848AbhE3RUO (ORCPT ); Sun, 30 May 2021 13:20:14 -0400 From: Paul Cercueil To: Thomas Bogendoerfer Cc: Rob Herring , =?utf-8?b?5ZGo55Cw5p2w?= , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, list@opendingux.net, Paul Cercueil Subject: [PATCH 3/8] MIPS: cpu-probe: Fix FPU detection on Ingenic JZ4760(B) Date: Sun, 30 May 2021 18:17:57 +0100 Message-Id: <20210530171802.23649-4-paul@crapouillou.net> In-Reply-To: <20210530171802.23649-1-paul@crapouillou.net> References: <20210530171802.23649-1-paul@crapouillou.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Ingenic JZ4760 and JZ4760B do have a FPU, but the config registers don't report it. Force the FPU detection in case the processor ID match the JZ4760(B) one. Signed-off-by: Paul Cercueil --- arch/mips/kernel/cpu-probe.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 0ef240adefb5..630fcb4cb30e 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -1840,6 +1840,11 @@ static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu) */ case PRID_COMP_INGENIC_D0: c->isa_level &= ~MIPS_CPU_ISA_M32R2; + + /* FPU is not properly detected on JZ4760(B). */ + if (c->processor_id == 0x2ed0024f) + c->options |= MIPS_CPU_FPU; + fallthrough; /*