Hi, On Sun, Jul 08, 2018 at 10:56:55PM +0800, Dong Aisheng wrote: > This is used for i.MX multi core communication. > e.g. A core to SCU firmware(M core) on MX8. > > Tx is using polling mode while Rx is interrupt driven and > schedule a hrtimer to receive remain words if have more than > 4 words.
You told us that using interrupts is not possible due to miserable performance, we then provided you a way with which you could poll. Why are you using interrupts now? We also suggested a way how the SCU mode could be integrated into the generic MU support driver Oleksij posted and now you send a driver which uses the same name as Oleksijs driver, but it only and exclusively works in SCU mode. This doesn't bring us forward. We suggested a binding that allows coexisting of the SCU mode and the generic mode of the MU by putting the mode information into the second mbox-cell. Why don't you use this? I don't think it's necessary to rewrite Oleksijs driver, instead it should rather be extended with the code I already provided as an example. With that we could make both of us happy since we can both have a suitable driver and even share most of the MU code. Regards, Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
