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Diffstat (limited to 'Documentation/devicetree/bindings/mmc/mmci.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mmci.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mmci.txt b/Documentation/devicetree/bindings/mmc/mmci.txt index 03796cf2d3e71..6d3c626e017d2 100644 --- a/Documentation/devicetree/bindings/mmc/mmci.txt +++ b/Documentation/devicetree/bindings/mmc/mmci.txt @@ -15,8 +15,11 @@ Required properties: Optional properties: - arm,primecell-periphid : contains the PrimeCell Peripheral ID, it overrides the ID provided by the HW +- resets : phandle to internal reset line. + Should be defined for sdmmc variant. - vqmmc-supply : phandle to the regulator device tree node, mentioned as the VCCQ/VDD_IO supply in the eMMC/SD specs. +specific for ux500 variant: - st,sig-dir-dat0 : bus signal direction pin used for DAT[0]. - st,sig-dir-dat2 : bus signal direction pin used for DAT[2]. - st,sig-dir-dat31 : bus signal direction pin used for DAT[3] and DAT[1]. @@ -24,6 +27,14 @@ Optional properties: - st,sig-dir-cmd : cmd signal direction pin used for CMD. - st,sig-pin-fbclk : feedback clock signal pin used. +specific for sdmmc variant: +- st,sig-dir : signal direction polarity used for cmd, dat0 dat123. +- st,neg-edge : data & command phase relation, generated on + sd clock falling edge. +- st,use-ckin : use ckin pin from an external driver to sample + the receive data (example: with voltage + switch transceiver). + Deprecated properties: - mmc-cap-mmc-highspeed : indicates whether MMC is high speed capable. - mmc-cap-sd-highspeed : indicates whether SD is high speed capable. |