Help about chip select on SPI slave devices
yifei_wang at hotmail.com
Sat Oct 16 21:35:10 EST 2010
We have a board which has 1 SPI master controller and 4 SPI slave devices, and we'd like to use 2 GPIOs to demux to chip select these slave devices.
Can anyone tell me if current powerpc dts support demuxer for chip select for spi slave devices? So far as I know, in dts, SPI master can only use 1 to 1 GPIO to CS(then needs 4 GPIOs).
Thanks in advance,
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