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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>
hifive-unleashed-5.1
Ludovic Barre 2018-10-08 14:08:54 +02:00 committed by Ulf Hansson
parent f3f6433468
commit 62022894cd
1 changed files with 10 additions and 0 deletions
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10
Documentation/devicetree/bindings/mmc/mmci.txt
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@ -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.