From patchwork Mon Nov 21 06:37:24 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ritesh Harjani X-Patchwork-Id: 9438939 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 07FA0600BA for ; Mon, 21 Nov 2016 06:39:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EB4F12899A for ; Mon, 21 Nov 2016 06:39:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DBE842899B; Mon, 21 Nov 2016 06:39:43 +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=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID 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 7DF60288D4 for ; Mon, 21 Nov 2016 06:39:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753572AbcKUGji (ORCPT ); Mon, 21 Nov 2016 01:39:38 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:47120 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753270AbcKUGjg (ORCPT ); Mon, 21 Nov 2016 01:39:36 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 8589B614EA; Mon, 21 Nov 2016 06:39:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1479710375; bh=Ohphjj1w5/4mroTl+Y4BV1bhplSPtXt4J6VRTOZi8jQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I53FpEWjX5+M0rkRNf9aVE1+3KhC0Us7CMt8JHDR3kTjUdnn4ZAJuMBPl19ri5sZv GZAoA6R7uae3F8ON3oAYpBachZ5ZJA6wjWeiT3iBw4ONS5JzUjkxbPcf4b1056RYwd SmoPwpj2CDLDjBSErsDlqHKMJH4Ov95zUQawmCMw= Received: from rharjani-linux.qualcomm.com (unknown [202.46.23.54]) (using TLSv1.1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: riteshh@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 8C61661506; Mon, 21 Nov 2016 06:39:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1479710374; bh=Ohphjj1w5/4mroTl+Y4BV1bhplSPtXt4J6VRTOZi8jQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jIxp/7Bb8BQle16oDontVrCP18G1i7KSZhPtEXJvbNIvVoTlh01tK7mLm9G/Rn8Sf qoeBsTZ7QVRRARgSrqbHfAiFIgRhgItCGbHjs20yBInShudoXdO+PjLFppmqb+kSdW NwmFEsPM0pazGzKAzIvW7CunaWRA6WFax6ShSRo8= DMARC-Filter: OpenDMARC Filter v1.3.1 smtp.codeaurora.org 8C61661506 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=pass smtp.mailfrom=riteshh@codeaurora.org From: Ritesh Harjani To: ulf.hansson@linaro.org, linux-mmc@vger.kernel.org, adrian.hunter@intel.com, sboyd@codeaurora.org, andy.gross@linaro.org Cc: shawn.lin@rock-chips.com, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, david.brown@linaro.org, linux-arm-msm@vger.kernel.org, georgi.djakov@linaro.org, alex.lemberg@sandisk.com, mateusz.nowak@intel.com, Yuliy.Izrailov@sandisk.com, asutoshd@codeaurora.org, david.griego@linaro.org, stummala@codeaurora.org, venkatg@codeaurora.org, rnayak@codeaurora.org, pramod.gurav@linaro.org, jeremymc@redhat.com, Ritesh Harjani Subject: [PATCH v9 14/16] mmc: sdhci-msm: Save the calculated tuning phase Date: Mon, 21 Nov 2016 12:07:24 +0530 Message-Id: <1479710246-26676-15-git-send-email-riteshh@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1479710246-26676-1-git-send-email-riteshh@codeaurora.org> References: <1479710246-26676-1-git-send-email-riteshh@codeaurora.org> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Save the tuning phase once the tuning is performed. This phase value will be used while calibrating DLL for HS400 mode. Signed-off-by: Ritesh Harjani Acked-by: Adrian Hunter --- drivers/mmc/host/sdhci-msm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index b1888c3..f4f277b 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -75,6 +75,7 @@ #define CORE_VENDOR_SPEC_CAPABILITIES0 0x11c +#define INVALID_TUNING_PHASE -1 #define SDHCI_MSM_MIN_CLOCK 400000 #define CORE_FREQ_100MHZ (100 * 1000 * 1000) @@ -97,6 +98,7 @@ struct sdhci_msm_host { bool use_14lpp_dll_reset; bool tuning_done; bool calibration_done; + u8 saved_tuning_phase; }; /* Platform specific tuning */ @@ -136,6 +138,9 @@ static int msm_config_cm_dll_phase(struct sdhci_host *host, u8 phase) u32 config; struct mmc_host *mmc = host->mmc; + if (phase > 0xf) + return -EINVAL; + spin_lock_irqsave(&host->lock, flags); config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG); @@ -429,6 +434,8 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) int rc; struct mmc_host *mmc = host->mmc; struct mmc_ios ios = host->mmc->ios; + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host); /* * Tuning is required for SDR104, HS200 and HS400 cards and @@ -453,6 +460,7 @@ static int sdhci_msm_execute_tuning(struct sdhci_host *host, u32 opcode) if (rc) return rc; + msm_host->saved_tuning_phase = phase; rc = mmc_send_tuning(mmc, opcode, NULL); if (!rc) { /* Tuning is successful at this tuning point */ @@ -799,6 +807,8 @@ static int sdhci_msm_probe(struct platform_device *pdev) sdhci_get_of_property(pdev); + msm_host->saved_tuning_phase = INVALID_TUNING_PHASE; + /* Setup SDCC bus voter clock. */ msm_host->bus_clk = devm_clk_get(&pdev->dev, "bus"); if (!IS_ERR(msm_host->bus_clk)) {