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Commit 5dd63f52 authored by Seungwon Jeon's avatar Seungwon Jeon Committed by Chris Ball
Browse files

mmc: dw_mmc: add the capability to support hs200 mode 



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

Signed-off-by: default avatarSeungwon Jeon <tgih.jun@samsung.com>
Tested-by: default avatarAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent c6d9deda

Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt

+5 −0
Original line number Diff line number Diff line
@@ -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>;

drivers/mmc/host/dw_mmc.c

+6 −0
Original line number Diff line number Diff line
@@ -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;

}