From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755239AbbE2ADW (ORCPT ); Thu, 28 May 2015 20:03:22 -0400 Received: from gabe.freedesktop.org ([131.252.210.177]:34222 "EHLO gabe.freedesktop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754891AbbE2ADP (ORCPT ); Thu, 28 May 2015 20:03:15 -0400 From: Eric Anholt To: linux-arm-kernel@lists.infradead.org Cc: linux-rpi-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stephen Warren , Lee Jones , Ulf Hansson , linux-mmc@vger.kernel.org, Eric Anholt Subject: [PATCH] mmc: sdhci-bcm2835: Actually enable the clock Date: Thu, 28 May 2015 17:03:12 -0700 Message-Id: <1432857792-7421-1-git-send-email-eric@anholt.net> X-Mailer: git-send-email 2.1.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We're currently using a fixed frequency clock specified in the DT, so enabling is a no-op. However, the RPi firmware-based clocks driver can actually disable unused clocks, so when switching to use it we ended up losing our MMC clock once all devices were probed. Signed-off-by: Eric Anholt --- drivers/mmc/host/sdhci-bcm2835.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c index 0ef0343..09aff3a 100644 --- a/drivers/mmc/host/sdhci-bcm2835.c +++ b/drivers/mmc/host/sdhci-bcm2835.c @@ -172,6 +172,11 @@ static int bcm2835_sdhci_probe(struct platform_device *pdev) ret = PTR_ERR(pltfm_host->clk); goto err; } + ret = clk_prepare_enable(pltfm_host->clk); + if (ret) { + dev_err(&pdev->dev, "failed to enable host clk\n"); + goto err; + } return sdhci_add_host(host); -- 2.1.4