Searched hist:d23eee88b56921a0bccd3b2355fc6feb4b5d343b (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/macintosh/ |
| H A D | via-cuda.c | diff d23eee88b56921a0bccd3b2355fc6feb4b5d343b Sat Dec 31 18:56:26 CST 2016 Finn Thain <fthain@telegraphics.com.au> via-cuda: Add support for Egret system controller
The Egret system controller was the predecessor to the Cuda and the
differences are minor.
On Cuda, byte acknowledgement requires one transition of the TACK
signal; on Egret two are needed. On Cuda, TIP is active low; on Egret
it is active high. And Cuda raises certain interrupts that Egret omits.
Accomodating these differences complicates the Cuda driver slightly
but avoids a lot of duplication (see next patch).
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
|