Re: [PATCH v3 5/6] spi: pxa2xx: Add ready signal

2018-11-13 Thread Geert Uytterhoeven
On Tue, Nov 13, 2018 at 11:23 AM Lubomir Rintel wrote: > Strobe a GPIO line when the slave TX FIFO is filled. This is how the > Embedded Controller on an OLPC XO-1.75 machine, that happens to be a SPI > master, learns that it can initiate a transaction. > > Signed-off-by: Lubomir Rintel > Tested-

[PATCH v3 5/6] spi: pxa2xx: Add ready signal

2018-11-13 Thread Lubomir Rintel
Strobe a GPIO line when the slave TX FIFO is filled. This is how the Embedded Controller on an OLPC XO-1.75 machine, that happens to be a SPI master, learns that it can initiate a transaction. Signed-off-by: Lubomir Rintel Tested-by: Pavel Machek --- Changes since v2 - Avoid an useless delay if