Sync BCDMA and PKTDMA support from Kernel for AM64 SoC

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

Add AM64 SoC specific channel mapping and endpoint data.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

Extend PSIL EP data to include AM64 DMA specific information

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

ICSSG Ethernet driver uses two src threads per port (one per slice).
Similarly CPSW uses one src thread.

Drop PSIL EP static data for other src threads in order to reduce
R5 SPL footprint. This makes AM65x board bootable again.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.

Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.

Signed-off-by: Simon Glass <sjg@chromium.org>

Reset the channel completely during channel release in order to clear
teardown bit before handing over to next user or jumping to Linux.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>

We only request ring pairs via K3 DMA driver, switch to use the new
k3_ringacc_request_rings_pair() to simplify the code.

As a good side effect, all boot stages now use exposed RING mode which
avoid maintaining proxy mode for 32 bit R5 core.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

In K3 UDMA architecture, RX rings are associated with RX flows rather
than RX channels, therefore move the ring pointers to udma_rflow struct

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

Encapsulate channel configuration in a separate struct so as to ease
resetting of these fields with memset() and also to increase readability
of the code.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

Update driver to use static PSIL endpoint Data instead of DT. This will
allow DT bindings to be in sync with kernel's DT.

Note that this patch breaks networking and OSPI boot as driver changes
are not backward compatible with existing DT. Subsequent commit will
update the DT to make it compatible with updated driver.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>