[PATCH] drm/amdgpu: Add HAINAN clock adjustment
From: decce6
Date: Tue Feb 10 2026 - 02:24:29 EST
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 amdgpu.
Signed-off-by: decce6 <decce6@xxxxxxxxx>
---
drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
index 1f539cc65f41..b5d895537477 100644
--- a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
+++ b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
@@ -3468,6 +3468,11 @@ static void si_apply_state_adjust_rules(struct amdgpu_device *adev,
max_sclk = 60000;
max_mclk = 80000;
}
+ if ((adev->pdev->device == 0x666f) &&
+ (adev->pdev->revision == 0x00)) {
+ max_sclk = 80000;
+ max_mclk = 95000;
+ }
} else if (adev->asic_type == CHIP_OLAND) {
if ((adev->pdev->revision == 0xC7) ||
(adev->pdev->revision == 0x80) ||
--
2.43.0