From patchwork Mon Jan 16 16:56:57 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 9519071 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 3252B601C3 for ; Mon, 16 Jan 2017 16:57:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1F2D726E78 for ; Mon, 16 Jan 2017 16:57:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 13DFE283BB; Mon, 16 Jan 2017 16:57:14 +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 9DDEB26E78 for ; Mon, 16 Jan 2017 16:57:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751130AbdAPQ5M (ORCPT ); Mon, 16 Jan 2017 11:57:12 -0500 Received: from mail.free-electrons.com ([62.4.15.54]:58792 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751253AbdAPQ5J (ORCPT ); Mon, 16 Jan 2017 11:57:09 -0500 Received: by mail.free-electrons.com (Postfix, from userid 110) id 1E57C20BBE; Mon, 16 Jan 2017 17:57:11 +0100 (CET) Received: from localhost (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.free-electrons.com (Postfix) with ESMTPSA id EA6B720708; Mon, 16 Jan 2017 17:57:10 +0100 (CET) From: Maxime Ripard To: Chen-Yu Tsai , Maxime Ripard , Ulf Hansson Cc: Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, Andre Przywara Subject: [PATCH v3 7/13] mmc: sunxi: Add more debug messages Date: Mon, 16 Jan 2017 17:56:57 +0100 Message-Id: <102ea884b296dae38ab28369ce14aa7a7998dc80.1484585798.git-series.maxime.ripard@free-electrons.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: In-Reply-To: References: 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 Add a bit more debug messages that can be helpful when debugging the clock setup. Signed-off-by: Maxime Ripard --- drivers/mmc/host/sunxi-mmc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index f0f6922bca8a..40ed287ceb1c 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -661,6 +661,9 @@ static int sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en) unsigned long expire = jiffies + msecs_to_jiffies(750); u32 rval; + dev_dbg(mmc_dev(host->mmc), "%sabling the clock\n", + oclk_en ? "en" : "dis"); + rval = mmc_readl(host, REG_CLKCR); rval &= ~(SDXC_CARD_CLOCK_ON | SDXC_LOW_POWER_ON | SDXC_MASK_DATA0); @@ -737,6 +740,7 @@ static int sunxi_mmc_clk_set_phase(struct sunxi_mmc_host *host, index = SDXC_CLK_50M_DDR; } } else { + dev_dbg(mmc_dev(host->mmc), "Invalid clock... returning\n"); return -EINVAL; } @@ -753,6 +757,9 @@ static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host, u32 rval, clock = ios->clock; int ret; + dev_dbg(mmc_dev(host->mmc), "setting clk to %u (requested %u)\n", + clock, ios->clock); + ret = sunxi_mmc_oclk_onoff(host, 0); if (ret) return ret; @@ -771,8 +778,7 @@ static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host, clock, rate); return rate; } - dev_dbg(mmc_dev(host->mmc), "setting clk to %d, rounded %ld\n", - clock, rate); + dev_dbg(mmc_dev(host->mmc), "Rounded clk to %ld\n", rate); /* setting clock rate */ ret = clk_set_rate(host->clk_mmc, rate);