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spi: mt65xx: Add dma max segment size declaration

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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
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GPG key ID: 24D68B725D5487D0
1 changed files with 5 additions and 0 deletions
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5
drivers/spi/spi-mt65xx.c
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@ -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)