From patchwork Tue Jan 3 06:46:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ziyuan X-Patchwork-Id: 9494485 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 14478606A7 for ; Tue, 3 Jan 2017 06:47:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 06939205AD for ; Tue, 3 Jan 2017 06:47:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EC9202679B; Tue, 3 Jan 2017 06:47:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8B449205AD for ; Tue, 3 Jan 2017 06:47:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933254AbdACGrJ (ORCPT ); Tue, 3 Jan 2017 01:47:09 -0500 Received: from regular1.263xmail.com ([211.150.99.135]:59286 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932977AbdACGrJ (ORCPT ); Tue, 3 Jan 2017 01:47:09 -0500 Received: from xzy.xu?rock-chips.com (unknown [192.168.167.201]) by regular1.263xmail.com (Postfix) with ESMTP id 16EB81E661; Tue, 3 Jan 2017 14:47:00 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from localhost.localdomain (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id CA24C3D0; Tue, 3 Jan 2017 14:46:59 +0800 (CST) X-RL-SENDER: xzy.xu@rock-chips.com X-FST-TO: ulf.hansson@linaro.org X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: xzy.xu@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: xzy.xu@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [103.29.142.67]) by smtp.263.net (Postfix) whith ESMTP id 25019NR3M65; Tue, 03 Jan 2017 14:47:01 +0800 (CST) From: Ziyuan Xu To: ulf.hansson@linaro.org, jh80.chung@samsung.com, shawn.lin@rock-chips.com Cc: linux-mmc@vger.kernel.org, randy.li@rock-chips.com, linux-rockchip@lists.infradead.org, Ziyuan Xu Subject: [PATCH] mmc: dw_mmc: update clock after ctrl reset in runtime resume Date: Tue, 3 Jan 2017 14:46:27 +0800 Message-Id: <1483425987-21805-1-git-send-email-xzy.xu@rock-chips.com> X-Mailer: git-send-email 2.7.4 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Immediately after reset, issue the command which sets update_clock_register_only bit, the card clock will restart. MMC_PM_KEEP_POWER is disabled for SD card and eMMC slots, so that they have no chance to invoke dw_mci_setup_bus for update clock behaviour. Let's consummate it. Fixes: e9ed883 ("mmc: dw_mmc: add runtime PM callback") Reported-by: Randy Li Signed-off-by: Ziyuan Xu --- drivers/mmc/host/dw_mmc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index b44306b..71715b4 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -3357,6 +3357,8 @@ int dw_mci_runtime_resume(struct device *dev) if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER) { dw_mci_set_ios(slot->mmc, &slot->mmc->ios); dw_mci_setup_bus(slot, true); + } else { + mci_send_cmd(slot, SDMMC_CMD_UPD_CLK, 0); } }