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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2014-06-17 22:16:07 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-06-19 09:41:51 +0200 |
| commit | 9313920df6d3d55fbd03ce8ec1c0da9a10c29824 (patch) | |
| tree | ef80d80abbaf46293b777ead52caddd9d5d97644 /dts/Bindings/spi/spi-bus.txt | |
| parent | 83e875e1f45beffe399cff0ff6128e0fca9da168 (diff) | |
| download | barebox-9313920df6d3d55fbd03ce8ec1c0da9a10c29824.tar.gz barebox-9313920df6d3d55fbd03ce8ec1c0da9a10c29824.tar.xz | |
dts: update to v3.16-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/spi/spi-bus.txt')
| -rw-r--r-- | dts/Bindings/spi/spi-bus.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/dts/Bindings/spi/spi-bus.txt b/dts/Bindings/spi/spi-bus.txt index e5a4d1b4ac..bbaa857dd6 100644 --- a/dts/Bindings/spi/spi-bus.txt +++ b/dts/Bindings/spi/spi-bus.txt @@ -55,13 +55,15 @@ contain the following properties. chip select active high - spi-3wire - (optional) Empty property indicating device requires 3-wire mode. +- spi-lsb-first - (optional) Empty property indicating device requires + LSB first mode. - spi-tx-bus-width - (optional) The bus width(number of data wires) that used for MOSI. Defaults to 1 if not present. - spi-rx-bus-width - (optional) The bus width(number of data wires) that used for MISO. Defaults to 1 if not present. Some SPI controllers and devices support Dual and Quad SPI transfer mode. -It allows data in SPI system transfered in 2 wires(DUAL) or 4 wires(QUAD). +It allows data in the SPI system to be transferred in 2 wires(DUAL) or 4 wires(QUAD). Now the value that spi-tx-bus-width and spi-rx-bus-width can receive is only 1(SINGLE), 2(DUAL) and 4(QUAD). Dual/Quad mode is not allowed when 3-wire mode is used. |