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(parent: 650076d) | patch
spi: pxa2xx: Add ready signal
authorLubomir Rintel <lkundrak@v3.sk>
Tue, 13 Nov 2018 10:22:27 +0000 (11:22 +0100)
committerMark Brown <broonie@kernel.org>
Tue, 13 Nov 2018 18:02:09 +0000 (10:02 -0800)
commitb12bcaed9b2d51b7798068d11b58545614dba48d
tree8b762b220b3a3b7d72d2987fc844295dfb06cb98tree | snapshot
parent650076ddf704e4b1623ccfed563e3bb455895d1ccommit | diff
spi: pxa2xx: Add ready signal

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 <lkundrak@v3.sk>
Tested-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
drivers/spi/spi-pxa2xx.c diff | blob | history
drivers/spi/spi-pxa2xx.h diff | blob | history
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