From 240dfd2dd6d87253c53a3d4768db884675468b2e Mon Sep 17 00:00:00 2001 From: Jonas Karlman Date: Sat, 28 Feb 2026 11:28:22 +0000 Subject: [PATCH] drm/bridge: dw-hdmi-qp: fix multi-channel audio output [ Upstream commit cffcb42c57686e9a801dfcf37a3d0c62e51c1c3e ] Channel Allocation (PB4) and Level Shift Information (PB5) are configured with values from PB1 and PB2 due to the wrong offset being used. This results in missing audio channels or incorrect speaker placement when playing multi-channel audio. Use the correct offset to fix multi-channel audio output. Fixes: fd0141d1a8a2 ("drm/bridge: synopsys: Add audio support for dw-hdmi-qp") Reported-by: Christian Hewitt Signed-off-by: Jonas Karlman Signed-off-by: Christian Hewitt Reviewed-by: Cristian Ciocaltea Link: https://patch.msgid.link/20260228112822.4056354-1-christianshewitt@gmail.com Signed-off-by: Luca Ceresoli Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c index 60166919c5b54..ace9d8bcdd197 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c @@ -838,7 +838,7 @@ static int dw_hdmi_qp_config_audio_infoframe(struct dw_hdmi_qp *hdmi, regmap_bulk_write(hdmi->regm, PKT_AUDI_CONTENTS0, &header_bytes, 1); regmap_bulk_write(hdmi->regm, PKT_AUDI_CONTENTS1, &buffer[3], 1); - regmap_bulk_write(hdmi->regm, PKT_AUDI_CONTENTS2, &buffer[4], 1); + regmap_bulk_write(hdmi->regm, PKT_AUDI_CONTENTS2, &buffer[7], 1); /* Enable ACR, AUDI, AMD */ dw_hdmi_qp_mod(hdmi, -- 2.47.3