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authorzhichao.liu <zhichao.liu@mediatek.com>2022-09-27 11:32:48 +0300
committerMark Brown <broonie@kernel.org>2022-09-27 15:48:36 +0300
commit309e98548c2b144512d0a212f2d786ae9694f5e4 (patch)
tree205e896631d0d170bf6890c59e39cae98b1ec051 /drivers/spi
parent048f71f7685706dcc859160cc74f73e361cfe6c0 (diff)
downloadlinux-309e98548c2b144512d0a212f2d786ae9694f5e4.tar.xz
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: 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>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-mt65xx.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 0a3b9f7eed30..11aeae7fe7fc 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -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)