mirror of
https://abf.rosa.ru/djam/kernel-5.15.git
synced 2025-02-24 02:52:55 +00:00
36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
|
From 5f6a25cbd373aa72738189356a0f606daa7bba59 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Alexey Sheplyakov <asheplyakov@altlinux.org>
|
||
|
|
Date: Mon, 21 Jun 2021 15:42:47 +0400
|
||
|
|
Subject: [PATCH] panfrost: disable devfreq on BE-M1000 SoC
|
||
|
|
|
||
|
|
Enabling GPU frequency scaling on BE-M1000 cases GPU MMU lockup:
|
||
|
|
|
||
|
|
[ 38.108633] panfrost 2a200000.gpu: AS_ACTIVE bit stuck
|
||
|
|
|
||
|
|
Since GPU and CPU share the memory this locks up the whole system.
|
||
|
|
Therefore disable devfreq on BE-M1000.
|
||
|
|
---
|
||
|
|
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 6 ++++++
|
||
|
|
1 file changed, 6 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
|
||
|
|
index 8ab025d0035f..c2f46665cf33 100644
|
||
|
|
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
|
||
|
|
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
|
||
|
|
@@ -97,6 +97,12 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
|
||
|
|
struct thermal_cooling_device *cooling;
|
||
|
|
struct panfrost_devfreq *pfdevfreq = &pfdev->pfdevfreq;
|
||
|
|
|
||
|
|
+ if (of_device_is_compatible(of_root, "baikal,baikal-m")) {
|
||
|
|
+ dev_info(pfdev->dev, "disabling GPU devfreq on BE-M1000\n");
|
||
|
|
+ ret = 0;
|
||
|
|
+ goto err_fini;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
opp_table = dev_pm_opp_set_regulators(dev, pfdev->comp->supply_names,
|
||
|
|
pfdev->comp->num_supplies);
|
||
|
|
if (IS_ERR(opp_table)) {
|
||
|
|
--
|
||
|
|
2.31.1
|
||
|
|
|