Unverified Commit 309e9854 authored by zhichao.liu's avatar zhichao.liu Committed by Mark Brown
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spi: mt65xx: Add dma max segment size declaration 



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: default avatarzhichao.liu <zhichao.liu@mediatek.com>
Link: https://lore.kernel.org/r/20220927083248.25404-1-zhichao.liu@mediatek.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 048f71f7

drivers/spi/spi-mt65xx.c

+5 −0
Original line number Diff line number Diff line
@@ -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)