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| author | Ludovic Barre <ludovic.barre@st.com> | 2018-10-08 14:08:54 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-09 09:13:04 +0200 |
| commit | 62022894cd42c6bedc19ead51e91cdfb742cb5a6 (patch) | |
| tree | 0837b26e6f533e9694d5edc29d32645be488fc4d /Documentation | |
| parent | f3f6433468bd206bafd853f0a5b99e259d620e67 (diff) | |
| download | linux-62022894cd42c6bedc19ead51e91cdfb742cb5a6.tar.bz2 | |
dt-bindings: mmci: add stm32 sdmmc variant
This patch adds properties for stm32 sdmmc variant.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mmci.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mmci.txt b/Documentation/devicetree/bindings/mmc/mmci.txt index 4e69b251cca3..6d3c626e017d 100644 --- a/Documentation/devicetree/bindings/mmc/mmci.txt +++ b/Documentation/devicetree/bindings/mmc/mmci.txt @@ -16,8 +16,10 @@ 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]. @@ -25,6 +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. |