* Peter Ujfalusi <peter.ujfalusi@xxxxxx> [151202 02:01]: > On 12/01/2015 07:00 PM, Tony Lindgren wrote: > >> I see. The dm81xx basically am33xx/am43xx? > > > > Yeah similar to am33xx with different clocks and with a bunch of accelerators. > > > >> Actually I would prefer to use the dmaengine's event router framework and we > >> do have support for the am33xx/am43xx type of crossbar already implemented. > >> I'm going to resend the DTS series for am33xx/am43xx to convert them to use > >> the new DT bindings along with the dma event router support: > >> https://www.mail-archive.com/linux-omap%40vger.kernel.org/msg120828.html > > > > OK yes a dmaengine event router works too when available. Good to see > > them as separate driver instances now :) Are only the dts changes missing > > now? > > > > FYI, when we have separate interconnect driver instances, we don't want to > > and cannot tweak registers outside the interconnect instance because of them > > being in separate clock and/or power domains :p > > What does this mean in practice? We can not touch these registers? The DMA > crossbar is a separate driver from the eDMA driver. Seem like it should not affect DMA crossbar as it's a separate driver. What I meant is we need a separate driver for clocks, pinctrl, regulators, PHY, crossbar or syscon to use the SCM registers from drivers sitting on a L4 interonnect. > > In any case, it seems there's no harm using pinctrl for evtmux on dm81xx > > until the event router is available. It's currently only needed on the > > t410 emmc that I'm aware of :) > > The AM33xx/AM43xx DMA crossbar support is in 4.4 already: > 42dbdcc6bf96 dmaengine: ti-dma-crossbar: Add support for crossbar on AM33xx/AM43xx OK great. Tony -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
