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| author | Chaotian Jing <chaotian.jing@mediatek.com> | 2015-10-27 09:24:21 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2015-10-27 12:21:15 +0300 |
| commit | 794f15782d9f12aa5a43f796680a5fc4f2c424e3 (patch) | |
| tree | a67a1968a3b588efd3bcf04b88083863d97cf92f | |
| parent | a7cedab6ccd7f02c86476ae52760a5d0482806fa (diff) | |
| download | linux-794f15782d9f12aa5a43f796680a5fc4f2c424e3.tar.xz | |
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>
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mmc.txt | 1 | ||||
| -rw-r--r-- | drivers/mmc/core/host.c | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 0384fc3f64e8..f693baf87264 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -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 diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 970e6906930b..da950c44204d 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -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")) |