]> git.ipfire.org Git - thirdparty/kernel/linux.git/commit
Revert "arm64: dts: ti: k3-j721e-beagleboneai64: Fix reversed C6x carveout locations"
authorBeleswar Padhi <b-padhi@ti.com>
Mon, 8 Sep 2025 14:28:14 +0000 (19:58 +0530)
committerNishanth Menon <nm@ti.com>
Fri, 12 Sep 2025 04:15:31 +0000 (09:45 +0530)
commit932424a925ce79cbed0a93d36c5f1b69a0128de1
tree99973ff7237d32b9641e919cca4f4e522da13e3f
parent79a1778c7819c8491cdbdc1f7e46d478cb84d5cf
Revert "arm64: dts: ti: k3-j721e-beagleboneai64: Fix reversed C6x carveout locations"

This reverts commit 1a314099b7559690fe23cdf3300dfff6e830ecb1.

The C6x carveouts are reversed intentionally. This is due to the
requirement to keep the DMA memory region as non-cached, however the
minimum granular cache region for C6x is 16MB. So, C66x_0 marks the
entire C66x_1 16MB memory carveouts as non-cached, and uses the DMA
memory region of C66x_1 as its own, and vice-versa.

This was also called out in the original commit which introduced these
reversed carveouts:
"The minimum granularity on the Cache settings on C66x DSP
cores is 16MB, so the DMA memory regions are chosen such that
they are in separate 16MB regions for each DSP, while reserving
a total of 16 MB for each DSP and not changing the overall DSP
        remoteproc carveouts."

Fixes: 1a314099b755 ("arm64: dts: ti: k3-j721e-beagleboneai64: Fix reversed C6x carveout locations")
Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
Acked-by: Andrew Davis <afd@ti.com>
Link: https://patch.msgid.link/20250908142826.1828676-23-b-padhi@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>
arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts