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=-9.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 6403CC43387 for ; Wed, 26 Dec 2018 22:59:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2694A2070B for ; Wed, 26 Dec 2018 22:59:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1545865173; bh=PMITHoI6OXQ5DvjALw0rW35qmXs5VmKQOAgQMQOYC2Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QO6BZ9KZzYcyYcXC7YoI/YfoQlP7w/puLd9ZqKILjYXjJMGAnTl6kbcs2UJN1ITb6 shYWpOuAaM+l7A0AWTv7c6mFdxcs4+dRQdaFce+5a6uAuWn5xxM6qvGC/jef3rLWMP K5hAznMsJNSucWmquSgYtZF5deco9Jtf5Nnx0YmU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730545AbeLZW7c (ORCPT ); Wed, 26 Dec 2018 17:59:32 -0500 Received: from mail.kernel.org ([198.145.29.99]:57864 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728358AbeLZW5A (ORCPT ); Wed, 26 Dec 2018 17:57:00 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 64B42214D8; Wed, 26 Dec 2018 22:56:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1545865020; bh=PMITHoI6OXQ5DvjALw0rW35qmXs5VmKQOAgQMQOYC2Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G0buXdnCR27eBekSNk/qOrwVWssKcUKJI9bpvNzJk5Kwf/shc/NE6WZOMtbGNQ/RS 0SHTH4MAi30S97EhPFbSCEHXhVzW6KrCVI0MCg5/tQQA7vnTc8oTZXDIROgVYpaL3f Rq3lZh1JBnD5KTW8MvKZwok9F219VDje8j/Yh0fw= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Anson Huang , Anson Huang , Shawn Guo , Sasha Levin Subject: [PATCH AUTOSEL 4.4 02/21] ARM: imx: update the cpu power up timing setting on i.mx6sx Date: Wed, 26 Dec 2018 17:54:40 -0500 Message-Id: <20181226225501.151365-2-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181226225501.151365-1-sashal@kernel.org> References: <20181226225501.151365-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Anson Huang [ Upstream commit 1e434b703248580b7aaaf8a115d93e682f57d29f ] The sw2iso count should cover ARM LDO ramp-up time, the MAX ARM LDO ramp-up time may be up to more than 100us on some boards, this patch sets sw2iso to 0xf (~384us) which is the reset value, and it is much more safe to cover different boards, since we have observed that some customer boards failed with current setting of 0x2. Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx") Signed-off-by: Anson Huang Reviewed-by: Fabio Estevam Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- arch/arm/mach-imx/cpuidle-imx6sx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach-imx/cpuidle-imx6sx.c index 3c6672b3796b..7f5df8992008 100644 --- a/arch/arm/mach-imx/cpuidle-imx6sx.c +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c @@ -97,7 +97,7 @@ int __init imx6sx_cpuidle_init(void) * except for power up sw2iso which need to be * larger than LDO ramp up time. */ - imx_gpc_set_arm_power_up_timing(2, 1); + imx_gpc_set_arm_power_up_timing(0xf, 1); imx_gpc_set_arm_power_down_timing(1, 1); return cpuidle_register(&imx6sx_cpuidle_driver, NULL); -- 2.19.1