From: Jerry Huang <Chang-Ming.Huang@xxxxxxxxxxxxx> For some FSL ESDHC controller(e.g. P2020E, Rev1.0), the SDHC can not work on DMA mode because of the hardware bug, so we set a broken dma flag and use PIO mode. Signed-off-by: Gao Guanhua <B22826@xxxxxxxxxxxxx> Signed-off-by: Jerry Huang <Chang-Ming.Huang@xxxxxxxxxxxxx> CC: Chris Ball <cjb@xxxxxxxxxx> --- changes for v2: - change the property to compatible for quirks drivers/mmc/host/sdhci-pltfm.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index a9e12ea..ba36c36 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -2,7 +2,7 @@ * sdhci-pltfm.c Support for SDHCI platform devices * Copyright (c) 2009 Intel Corporation * - * Copyright (c) 2007 Freescale Semiconductor, Inc. + * Copyright (c) 2007, 2011 Freescale Semiconductor, Inc. * Copyright (c) 2009 MontaVista Software, Inc. * * Authors: Xiaobo Xie <X.Xie@xxxxxxxxxxxxx> @@ -71,6 +71,9 @@ void sdhci_get_of_property(struct platform_device *pdev) if (sdhci_of_wp_inverted(np)) host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT; + if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc")) + host->quirks |= SDHCI_QUIRK_BROKEN_DMA; + clk = of_get_property(np, "clock-frequency", &size); if (clk && size == sizeof(*clk) && *clk) pltfm_host->clock = be32_to_cpup(clk); -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
