From ebe350182878affd6ab8b7fa4e5fe27966bb9821 Mon Sep 17 00:00:00 2001 From: Sean Rhodes Date: Mon, 17 Mar 2025 15:05:40 +0000 Subject: [PATCH] mb/starlabs/starbook/mtl: Enable DDC for DDIA Enable DDC so that GOP can read the backlight brightness from EDID. This avoids FSP repeatedly trying and failing to read it, and also stops the backlight brightness not being restored correctly in Linux. Change-Id: Icd292ee175a14799fe08c0989ca3fdccd5ccc123 Signed-off-by: Sean Rhodes Reviewed-on: https://review.coreboot.org/c/coreboot/+/86895 Tested-by: build bot (Jenkins) Reviewed-by: Matt DeVillier --- src/mainboard/starlabs/starbook/variants/mtl/devicetree.cb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/mainboard/starlabs/starbook/variants/mtl/devicetree.cb b/src/mainboard/starlabs/starbook/variants/mtl/devicetree.cb index 19d5d99ef3..544df456d5 100644 --- a/src/mainboard/starlabs/starbook/variants/mtl/devicetree.cb +++ b/src/mainboard/starlabs/starbook/variants/mtl/devicetree.cb @@ -45,7 +45,7 @@ chip soc/intel/meteorlake register "ddi_port_A_config" = "1" register "ddi_ports_config" = "{ - [DDI_PORT_A] = DDI_ENABLE_HPD, + [DDI_PORT_A] = DDI_ENABLE_HPD | DDI_ENABLE_DDC, [DDI_PORT_B] = DDI_ENABLE_HPD | DDI_ENABLE_DDC, [DDI_PORT_1] = DDI_ENABLE_HPD, [DDI_PORT_2] = DDI_ENABLE_HPD,