leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

spi: mt65xx: Add dma max segment size declaration

Browse Source 
Add spi dma max segment size declaration according to spi
hardware capability, instead of 64KB by system default
setting, to improve bus bandwidth for mass data transmission.

Signed-off-by: zhichao.liu <zhichao.liu@mediatek.com>
Link: https://lore.kernel.org/r/20220927083248.25404-1-zhichao.liu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
zhichao.liu 2022-09-27 16:32:48 +08:00 committed by Mark Brown
parent 048f71f768
commit 309e98548c
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/spi/spi-mt65xx.c
View File

@ -1184,6 +1184,11 @@ static int mtk_spi_probe(struct platform_device *pdev)
if (!dev->dma_mask)
dev->dma_mask = &dev->coherent_dma_mask;
if (mdata->dev_comp->ipm_design)
dma_set_max_seg_size(dev, SZ_16M);
else
dma_set_max_seg_size(dev, SZ_256K);
ret = devm_request_irq(dev, irq, mtk_spi_interrupt,
IRQF_TRIGGER_NONE, dev_name(dev), master);
if (ret)