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Wed, 29 Apr 2026 09:39:04 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 7139710470832578007 EX-QQ-RecipientCnt: 15 From: Troy Mitchell Date: Wed, 29 Apr 2026 09:38:48 +0800 Subject: [PATCH 3/7] ASoC: spacemit: adjust FIFO trigger threshold to half FIFO size Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260429-k3-i2s-v1-3-2fe99db11ecb@linux.spacemit.com> References: <20260429-k3-i2s-v1-0-2fe99db11ecb@linux.spacemit.com> In-Reply-To: <20260429-k3-i2s-v1-0-2fe99db11ecb@linux.spacemit.com> To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Yixun Lan , Jinmei Wei , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-sound@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Troy Mitchell X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; 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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 --- sound/soc/spacemit/k1_i2s.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/spacemit/k1_i2s.c b/sound/soc/spacemit/k1_i2s.c index e59624b2e23a..cef883ba4de9 100644 --- a/sound/soc/spacemit/k1_i2s.c +++ b/sound/soc/spacemit/k1_i2s.c @@ -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; -- 2.54.0