On Fri, Jan 11, 2019 at 08:36:35AM -0600, Rob Herring wrote:
> On Thu, 10 Jan 2019 18:58:36 +0100, Lubomir Rintel wrote:
> > The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra
> > signals for handshaking. It needs to know when is the slave (Linux)
> > side's TX FIFO ready for
On Thu, 10 Jan 2019 18:58:36 +0100, Lubomir Rintel wrote:
> The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra
> signals for handshaking. It needs to know when is the slave (Linux)
> side's TX FIFO ready for transfer (the ready-gpio signal on the SPI
> controller node) and when
The OLPC XO-1.75 Embedded Controller is a SPI master that uses extra
signals for handshaking. It needs to know when is the slave (Linux)
side's TX FIFO ready for transfer (the ready-gpio signal on the SPI
controller node) and when does it wish to respond with a command (the
cmd-gpio property).
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