]> www.infradead.org Git - users/jedix/linux-maple.git/commit
ARM: dts: dra7: Add bus_dma_limit for l4 cfg bus
authorRomain Naour <romain.naour@skf.com>
Fri, 15 Nov 2024 10:25:37 +0000 (11:25 +0100)
committerKevin Hilman <khilman@baylibre.com>
Fri, 6 Dec 2024 20:55:40 +0000 (12:55 -0800)
commitc1472ec1dc4419d0bae663c1a1e6cb98dc7881ad
treeb20b621d632ab3553f03f47a8249d27084b06092
parent40384c840ea1944d7c5a392e8975ed088ecf0b37
ARM: dts: dra7: Add bus_dma_limit for l4 cfg bus

A bus_dma_limit was added for l3 bus by commit cfb5d65f2595
("ARM: dts: dra7: Add bus_dma_limit for L3 bus") to fix an issue
observed only with SATA on DRA7-EVM with 4GB RAM and CONFIG_ARM_LPAE
enabled.

Since kernel 5.13, the SATA issue can be reproduced again following
the SATA node move from L3 bus to L4_cfg in commit 8af15365a368
("ARM: dts: Configure interconnect target module for dra7 sata").

Fix it by adding an empty dma-ranges property to l4_cfg and
segment@100000 nodes (parent device tree node of SATA controller) to
inherit the 2GB dma ranges limit from l3 bus node.

Note: A similar fix was applied for PCIe controller by commit
90d4d3f4ea45 ("ARM: dts: dra7: Fix bus_dma_limit for PCIe").

Fixes: 8af15365a368 ("ARM: dts: Configure interconnect target module for dra7 sata").
Link: https://lore.kernel.org/linux-omap/c583e1bb-f56b-4489-8012-ce742e85f233@smile.fr/
Cc: stable@vger.kernel.org # 5.13
Signed-off-by: Romain Naour <romain.naour@skf.com>
Link: https://lore.kernel.org/r/20241115102537.1330300-1-romain.naour@smile.fr
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
arch/arm/boot/dts/ti/omap/dra7-l4.dtsi