From 8a6391ec669366cbe7bde92b468c561e8b309fd6 Mon Sep 17 00:00:00 2001 From: Alexey Charkov Date: Wed, 18 Mar 2026 18:50:25 +0400 Subject: [PATCH] ASoC: rockchip: rockchip_sai: Set slot width for non-TDM mode Currently the slot width in non-TDM mode is always kept at the POR value of 32 bits, regardless of the sample width, which doesn't work well for some codecs such as NAU8822. Set the slot width according to the sample width in non-TDM mode, which is what other CPU DAI drivers do. Tested on the following RK3576 configurations: - SAI2 + NAU8822 (codec as the clock master), custom board - SAI1 + ES8388 (codec as the clock master), RK3576 EVB1 - SAI2 + RT5616 (SAI as the clock master), FriendlyElec NanoPi M5 NAU8822 didn't work prior to this patch but works after the patch. Other two configurations work both before and after the patch. Fixes: cc78d1eaabad ("ASoC: rockchip: add Serial Audio Interface (SAI) driver") Signed-off-by: Alexey Charkov Tested-by: Nicolas Frattaroli Link: https://patch.msgid.link/20260318-sai-slot-width-v1-1-1f68186f71e3@flipper.net Signed-off-by: Mark Brown --- sound/soc/rockchip/rockchip_sai.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sound/soc/rockchip/rockchip_sai.c b/sound/soc/rockchip/rockchip_sai.c index 1bf614dbdf4d0..ed393e5034a49 100644 --- a/sound/soc/rockchip/rockchip_sai.c +++ b/sound/soc/rockchip/rockchip_sai.c @@ -628,6 +628,10 @@ static int rockchip_sai_hw_params(struct snd_pcm_substream *substream, regmap_update_bits(sai->regmap, reg, SAI_XCR_VDW_MASK | SAI_XCR_CSR_MASK, val); + if (!sai->is_tdm) + regmap_update_bits(sai->regmap, reg, SAI_XCR_SBW_MASK, + SAI_XCR_SBW(params_physical_width(params))); + regmap_read(sai->regmap, reg, &val); slot_width = SAI_XCR_SBW_V(val); -- 2.47.3