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MIPS: ath79: reduce ARCH_DMA_MINALIGN

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Currently, ath79 SoCs use the default ARCH_DMA_MINALIGN value of 128
bytes defined in mach-generic. This is excessive for these platforms
and leads to significant memory waste in kmalloc.

Override ARCH_DMA_MINALIGN to use L1_CACHE_BYTES, which is 32 bytes for
ath79 SoCs.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Rosen Penev
2026-06-15 12:12:24 +02:00
committed by Thomas Bogendoerfer
parent 5ae158d31d
commit aeaa898780
1 changed files with 7 additions and 0 deletions
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arch/mips/include/asm/mach-ath79/kmalloc.h
+7
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_MACH_ATH79_KMALLOC_H
#define __ASM_MACH_ATH79_KMALLOC_H
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
#endif /* __ASM_MACH_ATH79_KMALLOC_H */