From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kishon Vijay Abraham I Subject: [PATCH v3 05/11] mmc: sdhci: Disable HS200 mode if controller can't support 1.8v Date: Wed, 7 Mar 2018 18:50:14 +0530 Message-ID: <20180307132020.30951-6-kishon@ti.com> References: <20180307132020.30951-1-kishon@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20180307132020.30951-1-kishon@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: Ulf Hansson , Tony Lindgren , Adrian Hunter Cc: Rob Herring , Mark Rutland , Russell King , kishon@ti.com, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: linux-mmc@vger.kernel.org Though MMC controller can indicate HS200 mode capability (by using "mmc-hs200-1_8v" dt property), if the IO lines in the board is connected to 3.3v supply, HS200 mode cannot be supported. Such boards have "no-1-8-v" property in their dts file. Disable HS200 mode for boards which have "no-1-8-v" set. Signed-off-by: Kishon Vijay Abraham I --- drivers/mmc/host/sdhci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 2ededa7f43df..aa8b5ca0d1b0 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_HS200; } /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */ -- 2.11.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: kishon@ti.com (Kishon Vijay Abraham I) Date: Wed, 7 Mar 2018 18:50:14 +0530 Subject: [PATCH v3 05/11] mmc: sdhci: Disable HS200 mode if controller can't support 1.8v In-Reply-To: <20180307132020.30951-1-kishon@ti.com> References: <20180307132020.30951-1-kishon@ti.com> Message-ID: <20180307132020.30951-6-kishon@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Though MMC controller can indicate HS200 mode capability (by using "mmc-hs200-1_8v" dt property), if the IO lines in the board is connected to 3.3v supply, HS200 mode cannot be supported. Such boards have "no-1-8-v" property in their dts file. Disable HS200 mode for boards which have "no-1-8-v" set. Signed-off-by: Kishon Vijay Abraham I --- drivers/mmc/host/sdhci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 2ededa7f43df..aa8b5ca0d1b0 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_HS200; } /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */ -- 2.11.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754547AbeCGNVb (ORCPT ); Wed, 7 Mar 2018 08:21:31 -0500 Received: from fllnx210.ext.ti.com ([198.47.19.17]:52219 "EHLO fllnx210.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751220AbeCGNVW (ORCPT ); Wed, 7 Mar 2018 08:21:22 -0500 From: Kishon Vijay Abraham I To: Ulf Hansson , Tony Lindgren , Adrian Hunter CC: Rob Herring , Mark Rutland , Russell King , , , , , , Subject: [PATCH v3 05/11] mmc: sdhci: Disable HS200 mode if controller can't support 1.8v Date: Wed, 7 Mar 2018 18:50:14 +0530 Message-ID: <20180307132020.30951-6-kishon@ti.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180307132020.30951-1-kishon@ti.com> References: <20180307132020.30951-1-kishon@ti.com> MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Though MMC controller can indicate HS200 mode capability (by using "mmc-hs200-1_8v" dt property), if the IO lines in the board is connected to 3.3v supply, HS200 mode cannot be supported. Such boards have "no-1-8-v" property in their dts file. Disable HS200 mode for boards which have "no-1-8-v" set. Signed-off-by: Kishon Vijay Abraham I --- drivers/mmc/host/sdhci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 2ededa7f43df..aa8b5ca0d1b0 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_HS200; } /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */ -- 2.11.0