This patch adds support of recognizing hard-wired (permanent) cards
to Freescale's SDHC host driver. This is done by adding the option
"fsl,card-wired" to the SDHC device-tree entry. Detection of this
option is done in the probe function. Update documentation in file
fsl-esdhc.txt
Signed-off-by: Oded Gabbay <ogabbay@xxxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/mmc/fsl-esdhc.txt | 3 +++
drivers/mmc/host/sdhci-of-esdhc.c | 4 ++++
2 files changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt
index 64bcb8b..6f0eefa 100644
--- a/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt
+++ b/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt
@@ -16,6 +16,9 @@ Required properties:
only handle 1-bit data transfers.
- sdhci,auto-cmd12: (optional) specifies that a controller can
only handle auto CMD12.
+ - fsl,card-wired : (optional) specifies that the card is
+ a permanent card and should not be detected for insertion or
+ removal
Example:
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index e70f22f..2f79ec2 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -222,6 +222,10 @@ static int __devinit sdhci_esdhc_probe(struct platform_device *pdev)
host->quirks2 |= SDHCI_QUIRK2_BROKEN_HOST_CONTROL;
}
+ /* If card is permanent, add capability of non-removable */
+ if (of_get_property(np, "fsl,card-wired", NULL))
+ host->mmc->caps |= MMC_CAP_NONREMOVABLE;
+
ret = sdhci_add_host(host);
if (ret)
sdhci_pltfm_free(pdev);
--
1.7.11.7
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