Commit 794f1578 authored Oct 27, 2015 by Chaotian Jing Committed by Ulf Hansson Oct 27, 2015

mmc: core: Add DT bindings for eMMC hardware reset support



Sometime only need set MMC_CAP_HW_RESET for one of MMC hosts,
So set it in device tree is better.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

parent a7cedab6

Documentation/devicetree/bindings/mmc/mmc.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -37,6 +37,7 @@ Optional properties:
		- sd-uhs-sdr104: SD UHS SDR104 speed is supported
		- sd-uhs-ddr50: SD UHS DDR50 speed is supported
		- cap-power-off-card: powering off the card is safe
		- cap-mmc-hw-reset: eMMC hardware reset is supported
		- cap-sdio-irq: enable SDIO IRQ signalling on this interface
		- full-pwr-cycle: full power cycle of the card is supported
		- mmc-ddr-1_8v: eMMC high-speed DDR mode(1.8V I/O) is supported

drivers/mmc/core/host.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -267,6 +267,8 @@ int mmc_of_parse(struct mmc_host *host)
		host->caps \|= MMC_CAP_UHS_DDR50;
		if (of_property_read_bool(np, "cap-power-off-card"))
		host->caps \|= MMC_CAP_POWER_OFF_CARD;
		if (of_property_read_bool(np, "cap-mmc-hw-reset"))
		host->caps \|= MMC_CAP_HW_RESET;
		if (of_property_read_bool(np, "cap-sdio-irq"))
		host->caps \|= MMC_CAP_SDIO_IRQ;
		if (of_property_read_bool(np, "full-pwr-cycle"))