From 25f80d86059c4b78eeec8cb42db158ad2a29eb02 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 27 Apr 2018 17:17:18 +0530 Subject: mmc: sdhci-omap: Workaround for Errata i834 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Errata i834 in AM572x Sitara Processors Silicon Revision 2.0, 1.1 (SPRZ429K July 2014–Revised March 2017 [1]) mentions the maximum obtainable timeout through MMC host controller is 700ms. And for commands taking longer than 700ms, hardware timeout should be disabled and software timeout should be used. The workaround for Errata i834 can be achieved by adding SDHCI_QUIRK2_DISABLE_HW_TIMEOUT quirk in sdhci-omap. [1] -> http://www.ti.com/lit/er/sprz429k/sprz429k.pdf Signed-off-by: Kishon Vijay Abraham I Acked-by: Tony Lindgren Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-omap.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c index d5c1a9c71f95..2232a9974b21 100644 --- a/drivers/mmc/host/sdhci-omap.c +++ b/drivers/mmc/host/sdhci-omap.c @@ -715,7 +715,8 @@ static const struct sdhci_pltfm_data sdhci_omap_pdata = { SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC, .quirks2 = SDHCI_QUIRK2_ACMD23_BROKEN | SDHCI_QUIRK2_PRESET_VALUE_BROKEN | - SDHCI_QUIRK2_RSP_136_HAS_CRC, + SDHCI_QUIRK2_RSP_136_HAS_CRC | + SDHCI_QUIRK2_DISABLE_HW_TIMEOUT, .ops = &sdhci_omap_ops, }; -- cgit v1.2.3