c06fb25d1f
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41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
From 4be5e698ba5f28037bbbee4cb4326d21a383ed06 Mon Sep 17 00:00:00 2001
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From: Dom Cobley <popcornmix@gmail.com>
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Date: Mon, 17 Jul 2023 17:45:32 +0100
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Subject: [PATCH 0634/1085] drm/vc4: kms: Avoid setting core and disp clocks
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for hdmi modes
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On 2712, the firmware always runs these clock at a speed sufficient
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for dual 4kp60.
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The requests here prevent the gpu from going into its lowest voltage
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mode, so just skip the clock requests.
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With this applied the idle voltage on my pi 5 reduces from 0.7424V
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to 0.72V.
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Signed-off-by: Dom Cobley <popcornmix@gmail.com>
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---
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drivers/gpu/drm/vc4/vc4_kms.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_kms.c
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@@ -429,7 +429,7 @@ static void vc4_atomic_commit_tail(struc
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old_hvs_state->fifo_state[channel].pending_commit = NULL;
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}
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- if (vc4->gen >= VC4_GEN_5 && !vc4->firmware_kms) {
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+ if (vc4->gen == VC4_GEN_5 && !vc4->firmware_kms) {
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unsigned long state_rate = max(old_hvs_state->core_clock_rate,
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new_hvs_state->core_clock_rate);
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unsigned long core_rate = clamp_t(unsigned long, state_rate,
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@@ -483,7 +483,7 @@ static void vc4_atomic_commit_tail(struc
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drm_atomic_helper_cleanup_planes(dev, state);
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- if (vc4->gen >= VC4_GEN_5 && !vc4->firmware_kms) {
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+ if (vc4->gen == VC4_GEN_5 && !vc4->firmware_kms) {
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unsigned long core_rate = min_t(unsigned long,
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hvs->max_core_rate,
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new_hvs_state->core_clock_rate);
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