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From: WANG YiFei <yifei_wang@hotmail.com>
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Subject: Help about chip select on SPI slave devices
Date: Sat, 16 Oct 2010 18:35:10 +0800
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Hi,

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,
YiFei