From: Kishon Vijay Abraham I <kishon@ti.com>
To: Ulf Hansson <ulf.hansson@linaro.org>,
Tony Lindgren <tony@atomide.com>,
Adrian Hunter <adrian.hunter@intel.com>
Cc: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Russell King <linux@armlinux.org.uk>, <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>
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 [thread overview]
Message-ID: <20180307132020.30951-6-kishon@ti.com> (raw)
In-Reply-To: <20180307132020.30951-1-kishon@ti.com>
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 <kishon@ti.com>
---
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
next prev parent reply other threads:[~2018-03-07 13:21 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-07 13:20 [PATCH v3 00/11] mmc: sdhci-omap: Add UHS/HS200 mode support Kishon Vijay Abraham I
2018-03-07 13:20 ` [PATCH v3 01/11] mmc: sdhci-omap: Fix when capabilities are obtained from SDHCI_CAPABILITIES reg Kishon Vijay Abraham I
2018-03-15 14:17 ` Adrian Hunter
2018-03-07 13:20 ` [PATCH v3 02/11] mmc: sdhci-omap: Remove setting ADMA capability in driver Kishon Vijay Abraham I
2018-03-15 14:18 ` Adrian Hunter
2018-03-07 13:20 ` [PATCH v3 03/11] mmc: sdhci-omap: Workaround for Errata i843 Kishon Vijay Abraham I
2018-03-15 14:24 ` Adrian Hunter
2018-03-07 13:20 ` [PATCH v3 04/11] mmc: sdhci-omap: Invoke sdhci_get_of_property to read sdhci dt properties Kishon Vijay Abraham I
2018-03-15 14:27 ` Adrian Hunter
2018-03-07 13:20 ` Kishon Vijay Abraham I [this message]
2018-03-15 10:58 ` [PATCH v3 05/11] mmc: sdhci: Disable HS200 mode if controller can't support 1.8v Adrian Hunter
2018-03-07 13:20 ` [PATCH v3 06/11] mmc: sdhci: Add quirk to disable HW timeout Kishon Vijay Abraham I
2018-03-15 11:26 ` Adrian Hunter
2018-03-07 13:20 ` [PATCH v3 07/11] mmc: sdhci: Program a relatively accurate SW timeout value Kishon Vijay Abraham I
2018-03-15 13:13 ` Adrian Hunter
2018-03-16 6:29 ` Kishon Vijay Abraham I
2018-03-16 14:21 ` Adrian Hunter
2018-03-19 9:20 ` Kishon Vijay Abraham I
2018-03-19 10:00 ` Adrian Hunter
2018-03-19 10:19 ` Kishon Vijay Abraham I
2018-03-20 9:48 ` Kishon Vijay Abraham I
2018-04-04 12:48 ` Adrian Hunter
2018-03-07 13:20 ` [PATCH v3 08/11] mmc: sdhci-omap: Workaround for Errata i834 Kishon Vijay Abraham I
2018-03-07 13:20 ` [PATCH v3 09/11] dt-bindings: sdhci-omap: Add K2G specific binding Kishon Vijay Abraham I
2018-03-07 13:20 ` [PATCH v3 10/11] mmc: sdhci-omap: Add support for MMC/SD controller in k2g SoC Kishon Vijay Abraham I
2018-03-07 13:20 ` [PATCH v3 11/11] mmc: sdhci-omap: Add sdhci_omap specific ops for enable_sdio_irq Kishon Vijay Abraham I
2018-03-15 14:34 ` Adrian Hunter
2018-03-07 15:12 ` [PATCH v3 00/11] mmc: sdhci-omap: Add UHS/HS200 mode support Tony Lindgren
2018-03-15 8:47 ` Ulf Hansson
2018-03-15 8:52 ` Adrian Hunter
2018-03-15 10:02 ` Kishon Vijay Abraham I
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