diff options
| author | Kaustabh Chakraborty <kauschluss@disroot.org> | 2026-04-15 20:32:09 +0530 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2026-05-11 16:25:01 +0200 |
| commit | 65c132fa8c93a75b27860c3f03593937d8dc2c41 (patch) | |
| tree | e0ad5aaebe195c8fbf5fc414d0c4e81001b82291 /drivers/mmc | |
| parent | 4bac6b89e3cc8bd728aa40c3879e31ff85b8217e (diff) | |
mmc: dw_mmc: exynos: increase DMA threshold value for exynos7870
Exynos 7870 compatible controllers, such as SDIO ones are not able to
perform DMA transfers for small sizes of data (~16 to ~512 bytes),
resulting in cache issues in subsequent transfers. Increase the DMA
transfer threshold to 512 to allow the shorter transfers to take place,
bypassing DMA.
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/dw_mmc-exynos.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c index 261344d3a8cf..4b76b997ddc1 100644 --- a/drivers/mmc/host/dw_mmc-exynos.c +++ b/drivers/mmc/host/dw_mmc-exynos.c @@ -141,6 +141,7 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host) priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU) { /* Quirk needed for certain Exynos SoCs */ host->quirks |= DW_MMC_QUIRK_FIFO64_32; + host->dma_threshold = 512; } if (priv->ctrl_type == DW_MCI_TYPE_ARTPEC8) { |