From: Jerry Huang <chang-ming.hu...@freescale.com>
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 <b22...@freescale.com>
Signed-off-by: Jerry Huang <chang-ming.hu...@freescale.com>
CC: Chris Ball <c...@laptop.org>
Acked-by: Anton Vorontsov <cbouatmai...@gmail.com>
---
changes for v2:
- change the property to compatible for quirks
changes for v3:
- add the Acked-by
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 03970bc..67b9ab0 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....@freescale.com>
@@ -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
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