diff options
| author | Sugar Zhang <sugar.zhang@rock-chips.com> | 2020-06-29 17:05:42 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-07-15 08:55:11 +0300 |
| commit | 05611a93b8ffa3fe7d2eb43dd6c11e37ead5908a (patch) | |
| tree | ac6b0386d07a010d669a0ba3f262b3d423a1b0e5 /drivers/dma/pl330.c | |
| parent | 3621d3e57d9ec4677085bd11ebbf99bb405685b2 (diff) | |
| download | linux-05611a93b8ffa3fe7d2eb43dd6c11e37ead5908a.tar.xz | |
dmaengine: pl330: Remove the burst limit for quirk 'NO-FLUSHP'
There is no reason to limit the performance on the 'NO-FLUSHP' SoCs,
because 'FLUSHP' instruction is broken on these platforms, so remove
the limit to improve the efficiency.
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Link: https://lore.kernel.org/r/1593439555-68130-2-git-send-email-sugar.zhang@rock-chips.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/pl330.c')
| -rw-r--r-- | drivers/dma/pl330.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 6a158eef6b8a..7686292bc1db 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -1183,9 +1183,6 @@ static inline int _ldst_peripheral(struct pl330_dmac *pl330, { int off = 0; - if (pl330->quirks & PL330_QUIRK_BROKEN_NO_FLUSHP) - cond = BURST; - /* * do FLUSHP at beginning to clear any stale dma requests before the * first WFP. @@ -2221,9 +2218,7 @@ static bool pl330_prep_slave_fifo(struct dma_pl330_chan *pch, static int fixup_burst_len(int max_burst_len, int quirks) { - if (quirks & PL330_QUIRK_BROKEN_NO_FLUSHP) - return 1; - else if (max_burst_len > PL330_MAX_BURST) + if (max_burst_len > PL330_MAX_BURST) return PL330_MAX_BURST; else if (max_burst_len < 1) return 1; @@ -3128,8 +3123,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) pd->dst_addr_widths = PL330_DMA_BUSWIDTHS; pd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); pd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; - pd->max_burst = ((pl330->quirks & PL330_QUIRK_BROKEN_NO_FLUSHP) ? - 1 : PL330_MAX_BURST); + pd->max_burst = PL330_MAX_BURST; ret = dma_async_device_register(pd); if (ret) { |