From fa594ab9a7c3f6cf1e1fb69a112d709472bddba7 Mon Sep 17 00:00:00 2001
From: hrdl <31923882+hrdl-github@users.noreply.github.com>
Date: Wed, 14 May 2025 11:41:41 +0200
Subject: [PATCH] rockchip_ebc: emergency fix: don't allow temperatures < 19

Early cancellation is broken for DU sequences with >29 phases and can
cause damages to the display.
---
 drivers/gpu/drm/rockchip/rockchip_ebc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_ebc.c b/drivers/gpu/drm/rockchip/rockchip_ebc.c
index aa10d712bdef..499328855bbf 100644
--- a/drivers/gpu/drm/rockchip/rockchip_ebc.c
+++ b/drivers/gpu/drm/rockchip/rockchip_ebc.c
@@ -1110,6 +1110,8 @@ static void rockchip_ebc_upd_temp(struct rockchip_ebc *ebc)
 			printk(KERN_INFO "rockchip-ebc: override temperature from %i to %i\n", temperature, temp_override);
 			temperature = temp_override;
 		}
+		// Early cancellation is broken right now for lower temperatures
+		temperature = max(temperature, 19);
 		ebc->temperature = temperature;
 
 		// TODO: figure out exclusivity/inclusivity and lowest and highest temperature range