From patchwork Wed Apr 25 12:09:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 10362931 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 AC5C16038F for ; Wed, 25 Apr 2018 12:12:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9CDED28F5B for ; Wed, 25 Apr 2018 12:12:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 911F628F5F; Wed, 25 Apr 2018 12:12:07 +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=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, 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 2688328F5B for ; Wed, 25 Apr 2018 12:12:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753243AbeDYMKV (ORCPT ); Wed, 25 Apr 2018 08:10:21 -0400 Received: from fllnx210.ext.ti.com ([198.47.19.17]:60380 "EHLO fllnx210.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753089AbeDYMKM (ORCPT ); Wed, 25 Apr 2018 08:10:12 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by fllnx210.ext.ti.com (8.15.1/8.15.1) with ESMTP id w3PCA6Zp012304; Wed, 25 Apr 2018 07:10:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1524658206; bh=sFDx+3X/r433Y8AhLF3yjeTgoaucPbZwifgzYuUEP2w=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=TJLQjMPkgazkYaE4yCHI2tOtFN8Be8gL0eagijqPx71Us/mlUxUWBs1Y7qJzQ2b4r ePgy5ZowfjPuY4cCWB3+nv7CMgTufvL/H0zKOneWxNT2qCK4v8orCHdgVuO0qrI+r4 LBSDBuMDtIuu9tavnH9eq+hQ1+q6E/3L0LVMQJH8= Received: from DLEE104.ent.ti.com (dlee104.ent.ti.com [157.170.170.34]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id w3PCA6T1016325; Wed, 25 Apr 2018 07:10:06 -0500 Received: from DLEE109.ent.ti.com (157.170.170.41) by DLEE104.ent.ti.com (157.170.170.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Wed, 25 Apr 2018 07:10:03 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DLEE109.ent.ti.com (157.170.170.41) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1466.3 via Frontend Transport; Wed, 25 Apr 2018 07:10:03 -0500 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w3PC9hhS009970; Wed, 25 Apr 2018 07:10:00 -0500 From: Kishon Vijay Abraham I To: Ulf Hansson , Adrian Hunter CC: , Rob Herring , Mark Rutland , , , , , Tony Lindgren Subject: [PATCH v4 05/12] mmc: sdhci: Disable HS200/HS400 mode if controller can't support 1.8v Date: Wed, 25 Apr 2018 17:39:30 +0530 Message-ID: <20180425120937.29867-6-kishon@ti.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180425120937.29867-1-kishon@ti.com> References: <20180425120937.29867-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 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 Though MMC controller can indicate HS200/HS400 mode capability (by using "mmc-hs200-1_8v"/"mmc-hs400-1_8v" dt property), if the IO lines in the board is connected to 3.3v supply, HS200/HS400 mode cannot be supported. Such boards have "no-1-8-v" property in their dts file. Disable HS200/HS400 mode for boards which have "no-1-8-v" set. Signed-off-by: Kishon Vijay Abraham I Acked-by: Tony Lindgren --- drivers/mmc/host/sdhci.c | 1 + include/linux/mmc/host.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 2ededa7f43df..b5f047b5f3ae 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3672,6 +3672,7 @@ int sdhci_setup_host(struct sdhci_host *host) if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) { host->caps1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50); + mmc->caps2 &= ~MMC_CAP2_HSX00_1_8V; } /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */ diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 7c6eaf63f5ce..58832451767b 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -345,6 +345,7 @@ struct mmc_host { #define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */ #define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \ MMC_CAP2_HS400_1_2V) +#define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V) #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V) #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17) #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */