mirror of
https://github.com/armbian/build.git
synced 2026-09-08 23:59:54 +08:00
Ricardo Pardini
153d2ff622
- rewritten/attribution preserved - rewrite .config with new t2 stuff +recover SOUND/SND/SND_SOC
77 lines
2.8 KiB
Diff
77 lines
2.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Orlando Chamberlain <orlandoch.dev@gmail.com>
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Date: Fri, 28 Jun 2024 04:43:50 +0000
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Subject: i915: 4 lane quirk for mbp15,1
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Needed to use iGPU when dGPU was boot GPU
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Patch written by Kerem Karabay <kekrby@gmail.com>
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---
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drivers/gpu/drm/i915/display/intel_ddi.c | 3 ++
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drivers/gpu/drm/i915/display/intel_quirks.c | 15 ++++++++++
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drivers/gpu/drm/i915/display/intel_quirks.h | 1 +
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3 files changed, 19 insertions(+)
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diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
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index 111111111111..222222222222 100644
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--- a/drivers/gpu/drm/i915/display/intel_ddi.c
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+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
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@@ -4940,6 +4940,9 @@ static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dig_port)
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if (dig_port->ddi_a_4_lanes)
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return false;
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+ if (intel_has_quirk(display, QUIRK_DDI_A_FORCE_4_LANES))
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+ return true;
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+
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/* Broxton/Geminilake: Bspec says that DDI_A_4_LANES is the only
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* supported configuration
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*/
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diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c
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index 111111111111..222222222222 100644
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--- a/drivers/gpu/drm/i915/display/intel_quirks.c
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+++ b/drivers/gpu/drm/i915/display/intel_quirks.c
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@@ -66,6 +66,18 @@ static void quirk_increase_ddi_disabled_time(struct intel_display *display)
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drm_info(display->drm, "Applying Increase DDI Disabled quirk\n");
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}
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+/*
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+ * In some cases, the firmware might not set the lane count to 4 (for example,
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+ * when booting in some dual GPU Macs with the dGPU as the default GPU), this
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+ * quirk is used to force it as otherwise it might not be possible to compute a
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+ * valid link configuration.
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+ */
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+static void quirk_ddi_a_force_4_lanes(struct intel_display *display)
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+{
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+ intel_set_quirk(display, QUIRK_DDI_A_FORCE_4_LANES);
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+ drm_info(display->drm, "Applying DDI A Forced 4 Lanes quirk\n");
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+}
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+
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static void quirk_no_pps_backlight_power_hook(struct intel_display *display)
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{
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intel_set_quirk(display, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK);
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@@ -259,6 +271,9 @@ static struct intel_quirk intel_quirks[] = {
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/* Xiaomi Book Pro 14 2026 */
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{ 0xb081, 0x1d72, 0x2424, quirk_disable_psr2 },
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+
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+ /* Apple MacBookPro15,1 */
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+ { 0x3e9b, 0x106b, 0x0176, quirk_ddi_a_force_4_lanes },
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};
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static const struct intel_dpcd_quirk intel_dpcd_quirks[] = {
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diff --git a/drivers/gpu/drm/i915/display/intel_quirks.h b/drivers/gpu/drm/i915/display/intel_quirks.h
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index 111111111111..222222222222 100644
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--- a/drivers/gpu/drm/i915/display/intel_quirks.h
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+++ b/drivers/gpu/drm/i915/display/intel_quirks.h
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@@ -23,6 +23,7 @@ enum intel_quirk_id {
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QUIRK_EDP_LIMIT_RATE_HBR2,
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QUIRK_DISABLE_EDP_PANEL_REPLAY,
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QUIRK_DISABLE_PSR2,
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+ QUIRK_DDI_A_FORCE_4_LANES,
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};
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void intel_init_quirks(struct intel_display *display);
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--
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Armbian
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