redonkable/alistair23-linux
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mmc: dw_mmc: add the capability to support hs200 mode

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As host controller can support eMMC's HS200 mode at 1.8V or 1.2V,
these capability will be added.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Seungwon Jeon 2013-08-31 00:13:09 +09:00 committed by Chris Ball
parent c6d9deda64
commit 5dd63f5246
2 changed files with 11 additions and 0 deletions
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5
Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt
View file

@ -66,6 +66,10 @@ Optional properties:
* supports-highspeed: Enables support for high speed cards (up to 50MHz)
* caps2-mmc-hs200-1_8v: Supports mmc HS200 SDR 1.8V mode
* caps2-mmc-hs200-1_2v: Supports mmc HS200 SDR 1.2V mode
* broken-cd: as documented in mmc core bindings.
* vmmc-supply: The phandle to the regulator to use for vmmc. If this is
@ -95,6 +99,7 @@ board specific portions as listed below.
clock-frequency = <400000000>;
num-slots = <1>;
supports-highspeed;
caps2-mmc-hs200-1_8v;
broken-cd;
fifo-depth = <0x80>;
card-detect-delay = <200>;

6
drivers/mmc/host/dw_mmc.c
View file

@ -2187,6 +2187,12 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
if (of_find_property(np, "enable-sdio-wakeup", NULL))
pdata->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
if (of_find_property(np, "caps2-mmc-hs200-1_8v", NULL))
pdata->caps2 |= MMC_CAP2_HS200_1_8V_SDR;
if (of_find_property(np, "caps2-mmc-hs200-1_2v", NULL))
pdata->caps2 |= MMC_CAP2_HS200_1_2V_SDR;
return pdata;
}