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mmc: esdhc: add support to get voltage from device-tree 

Add suppport to get voltage from device-tree node for esdhc host,
if voltage-ranges was specified in device-tree node we can get
ocr_mask instead of read from host capacity register. If not voltages
still can be get from host capacity register.

Signed-off-by: Haijun Zhang <haijun.zhang@freescale.com>
Acked-by: Anton Vorontsov <anton@enomsg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Haijun Zhang 2013-08-26 09:19:24 +08:00 committed by Chris Ball
parent c0b887b66c
commit 490104ac59
1 changed files with 1 additions and 0 deletions
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1
drivers/mmc/host/sdhci-of-esdhc.c
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@ -316,6 +316,7 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
/* call to generic mmc_of_parse to support additional capabilities */
mmc_of_parse(host->mmc);
mmc_of_parse_voltage(np, &host->ocr_mask);
ret = sdhci_add_host(host);
if (ret)