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net: mvneta: dcache flush TX descriptors at init

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This fixes sporadic timeout on initial packet Tx (usually ARP), with an
error message like:

  timeout: packet not sent

Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Chris Packham <judge.packham@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Rabeeh Khoury <rabeeh@solid-run.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
This commit is contained in:
Rabeeh Khoury
2018-06-19 21:36:50 +03:00
committed by Joe Hershberger
parent 6dc73df73b
commit 0f8888b763
1 changed files with 1 additions and 0 deletions
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drivers/net/mvneta.c
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@@ -1702,6 +1702,7 @@ static int mvneta_probe(struct udevice *dev)
/* Align buffer area for descs and rx_buffers to 1MiB */ /* Align buffer area for descs and rx_buffers to 1MiB */
bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE); bd_space = memalign(1 << MMU_SECTION_SHIFT, BD_SPACE);
flush_dcache_range((ulong)bd_space, (ulong)bd_space + BD_SPACE);
mmu_set_region_dcache_behaviour((phys_addr_t)bd_space, BD_SPACE, mmu_set_region_dcache_behaviour((phys_addr_t)bd_space, BD_SPACE,
DCACHE_OFF); DCACHE_OFF);
buffer_loc.tx_descs = (struct mvneta_tx_desc *)bd_space; buffer_loc.tx_descs = (struct mvneta_tx_desc *)bd_space;