From 244b2c5ca8b14627e4a17755e5922221e121c771 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 09 Oct 2024 06:15:07 +0000
Subject: [PATCH] change system file

---
 kernel/drivers/gpu/drm/vc4/vc4_hvs.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/kernel/drivers/gpu/drm/vc4/vc4_hvs.c b/kernel/drivers/gpu/drm/vc4/vc4_hvs.c
index 95fa6fc..f8f2fc3 100644
--- a/kernel/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/kernel/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -677,6 +677,17 @@
 		      SCALER_DISPCTRL_DSPEISLUR(2) |
 		      SCALER_DISPCTRL_SCLEIRQ);
 
+	/* Set AXI panic mode.
+	 * VC4 panics when < 2 lines in FIFO.
+	 * VC5 panics when less than 1 line in the FIFO.
+	 */
+	dispctrl &= ~(SCALER_DISPCTRL_PANIC0_MASK |
+		      SCALER_DISPCTRL_PANIC1_MASK |
+		      SCALER_DISPCTRL_PANIC2_MASK);
+	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_PANIC0);
+	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_PANIC1);
+	dispctrl |= VC4_SET_FIELD(2, SCALER_DISPCTRL_PANIC2);
+
 	HVS_WRITE(SCALER_DISPCTRL, dispctrl);
 
 	ret = devm_request_irq(dev, platform_get_irq(pdev, 0),

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