From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752173AbbFZLRN (ORCPT ); Fri, 26 Jun 2015 07:17:13 -0400 Received: from mail-wg0-f43.google.com ([74.125.82.43]:35910 "EHLO mail-wg0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751682AbbFZLRE (ORCPT ); Fri, 26 Jun 2015 07:17:04 -0400 From: "Ivan T. Ivanov" To: Ulf Hansson Cc: Georgi Djakov , Stephen Boyd , Peter Griffin , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH] mmc: sdhci: msm: Boost controller core clock Date: Fri, 26 Jun 2015 14:16:57 +0300 Message-Id: <1435317417-369-1-git-send-email-ivan.ivanov@linaro.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ensure SDCC is working with maximum clock otherwise card detection could be extremely slow, up to 7 seconds. Signed-off-by: Ivan T. Ivanov --- drivers/mmc/host/sdhci-msm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index 4a09f76..b2556bc 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -489,6 +489,11 @@ static int sdhci_msm_probe(struct platform_device *pdev) goto pclk_disable; } + /* Vote for maximum clock rate for maximum performance */ + ret = clk_set_rate(msm_host->clk, INT_MAX); + if (ret) + dev_warn(&pdev->dev, "core clock boost falied\n"); + ret = clk_prepare_enable(msm_host->clk); if (ret) goto pclk_disable; -- 1.9.1