[PATCH 6.19 434/844] drm/radeon: Add HAINAN clock adjustment
From: Sasha Levin
Date: Sat Feb 28 2026 - 14:08:16 EST
From: decce6 <decce6@xxxxxxxxx>
[ Upstream commit 908d318f23d6b5d625bea093c5fc056238cdb7ff ]
This patch limits the clock speeds of the AMD Radeon R5 M420 GPU from
850/1000MHz (core/memory) to 800/950 MHz, making it work stably. This
patch is for radeon.
Signed-off-by: decce6 <decce6@xxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/radeon/si_dpm.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 9deb91970d4df..f12227145ef08 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -2925,6 +2925,11 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
max_sclk = 60000;
max_mclk = 80000;
}
+ if ((rdev->pdev->device == 0x666f) &&
+ (rdev->pdev->revision == 0x00)) {
+ max_sclk = 80000;
+ max_mclk = 95000;
+ }
} else if (rdev->family == CHIP_OLAND) {
if ((rdev->pdev->revision == 0xC7) ||
(rdev->pdev->revision == 0x80) ||
--
2.51.0