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ASoC: spacemit: adjust FIFO trigger threshold to half FIFO size

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Set both TX and RX FIFO trigger thresholds (TFT/RFT) to 0xF (half of
the 32-entry FIFO) instead of 5. This provides better DMA efficiency
by allowing more data to accumulate before triggering a DMA request,
reducing the number of DMA transactions needed.

Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Link: https://patch.msgid.link/20260429-k3-i2s-v1-3-2fe99db11ecb@linux.spacemit.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Troy Mitchell
2026-04-29 09:38:48 +08:00
committed by Mark Brown
parent 6b4afbaaa3
commit 03dcb5b68a
1 changed files with 2 additions and 2 deletions
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sound/soc/spacemit/k1_i2s.c
+2 -2
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@@ -93,8 +93,8 @@ static void spacemit_i2s_init(struct spacemit_i2s_dev *i2s)
u32 sscr_val, sspsp_val, ssfcr_val, ssrwt_val;
sscr_val = SSCR_TRAIL | SSCR_FRF_PSP;
ssfcr_val = FIELD_PREP(SSFCR_FIELD_TFT, 5) |
FIELD_PREP(SSFCR_FIELD_RFT, 5) |
ssfcr_val = FIELD_PREP(SSFCR_FIELD_TFT, 0xF) |
FIELD_PREP(SSFCR_FIELD_RFT, 0xF) |
SSFCR_RSRE | SSFCR_TSRE;
ssrwt_val = SSRWT_RWOT;
sspsp_val = SSPSP_SFRMP;