drm/amdgpu: Add HAINAN clock adjustment

[ Upstream commit 49fe2c57bdc0acff9d2551ae337270b6fd8119d9 ]

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@proton.me>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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 695432d3045ffae2302f5ba78a878abbe6248b8d..2d8d86efe2e73387f7ace1e3c3e8ccfd6130e956 100644 (file)
--- a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
+++ b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
@@ -3464,6 +3464,11 @@ 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) ||