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| author | zhichao.liu <zhichao.liu@mediatek.com> | 2022-09-27 11:32:48 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-09-27 15:48:36 +0300 |
| commit | 309e98548c2b144512d0a212f2d786ae9694f5e4 (patch) | |
| tree | 205e896631d0d170bf6890c59e39cae98b1ec051 /drivers/spi | |
| parent | 048f71f7685706dcc859160cc74f73e361cfe6c0 (diff) | |
| download | linux-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.c | 5 |
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) |