drm/radeon/si/dpm: add workaround for for Jet parts

commit 670bb4fd21c966d0d2a59ad4a99bb4889f9a2987 upstream.

Add clock quirks for Jet parts.

Reviewed-by: Sonny Jiang <sonny.jiang@amd.com>
Tested-by: Sonny Jiang <sonny.jiang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 393217886d98ee38f3959465356c9b2f03784ae2..db9c7d26ed168be971272ff3a8591d40cf7324d3 100644 (file)
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -3012,6 +3012,12 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
        if (rdev->pdev->device == 0x6811 &&
            rdev->pdev->revision == 0x81)
                max_mclk = 120000;
+       /* limit sclk/mclk on Jet parts for stability */
+       if (rdev->pdev->device == 0x6665 &&
+           rdev->pdev->revision == 0xc3) {
+               max_sclk = 75000;
+               max_mclk = 80000;
+       }
 
        /* XXX validate the min clocks required for display */