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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 116D9C17441 for ; Mon, 11 Nov 2019 19:04:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0CE22245C for ; Mon, 11 Nov 2019 19:04:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573499082; bh=U+Q2q91h71IfZLyPrlsO+f3m6IWcblCUU/aQJzpN5uU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZEGxo6akWcOmBm1gSekNJjmjO3yt9f0DuThuxrrdMT6MS2NNvDwZZcKyb7HT9rxCN WYlQJkd3Vi1AmyHcMD3rzARQJ6XWE5ow0yjtr3yiaat4ce4RBNXjyD1hNrgSlQk8T6 Ve6w+OxCh6MXXn1SQxJmV5OwOu8+ezNxN3rlByOU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727347AbfKKSm0 (ORCPT ); Mon, 11 Nov 2019 13:42:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:33538 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729496AbfKKSmU (ORCPT ); Mon, 11 Nov 2019 13:42:20 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E76AF214E0; Mon, 11 Nov 2019 18:42:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573497739; bh=U+Q2q91h71IfZLyPrlsO+f3m6IWcblCUU/aQJzpN5uU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=obtWx5AxBh5Jm+HIcGDKSAXCZf1+0zFmOu23ALmO4fKQURRhF49fssOj5DlajgH27 nr0z21uCHQeQSzWkC0Xzi//rWDHxULwZuCa/3cqwMk6N0Yw4t9kc8P+nebEA/s+j4c cXqt9clJVMQbTxNxdIUAjE2F6V5TbQXT2tM+Fez0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ondrej Jirman , Chen-Yu Tsai , Maxime Ripard Subject: [PATCH 4.19 036/125] ARM: sunxi: Fix CPU powerdown on A83T Date: Mon, 11 Nov 2019 19:27:55 +0100 Message-Id: <20191111181445.383112547@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191111181438.945353076@linuxfoundation.org> References: <20191111181438.945353076@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ondrej Jirman commit e690053e97e7a9c968df9a97cef9089dfa8e6a44 upstream. PRCM_PWROFF_GATING_REG has CPU0 at bit 4 on A83T. So without this patch, instead of gating the CPU0, the whole cluster was power gated, when shutting down first CPU in the cluster. Fixes: 6961275e72a8c1 ("ARM: sun8i: smp: Add support for A83T") Signed-off-by: Ondrej Jirman Acked-by: Chen-Yu Tsai Cc: stable@vger.kernel.org Signed-off-by: Maxime Ripard Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-sunxi/mc_smp.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/arch/arm/mach-sunxi/mc_smp.c +++ b/arch/arm/mach-sunxi/mc_smp.c @@ -478,14 +478,18 @@ static void sunxi_mc_smp_cpu_die(unsigne static int sunxi_cpu_powerdown(unsigned int cpu, unsigned int cluster) { u32 reg; + int gating_bit = cpu; pr_debug("%s: cluster %u cpu %u\n", __func__, cluster, cpu); if (cpu >= SUNXI_CPUS_PER_CLUSTER || cluster >= SUNXI_NR_CLUSTERS) return -EINVAL; + if (is_a83t && cpu == 0) + gating_bit = 4; + /* gate processor power */ reg = readl(prcm_base + PRCM_PWROFF_GATING_REG(cluster)); - reg |= PRCM_PWROFF_GATING_REG_CORE(cpu); + reg |= PRCM_PWROFF_GATING_REG_CORE(gating_bit); writel(reg, prcm_base + PRCM_PWROFF_GATING_REG(cluster)); udelay(20);