Reviewed-by: Alex Hung <[email protected]>
On 3/5/26 23:28, Xi Ruoyao wrote:
[Why]
The dcn32_override_min_req_memclk function is in dcn32_fpu.c, which is
compiled with CC_FLAGS_FPU into FP instructions. So when we call it we
must use DC_FP_{START,END} to save and restore the FP context, and
prepare the FP unit on architectures like LoongArch where the FP unit
isn't always on.
Reported-by: LiarOnce <[email protected]>
Fixes: ee7be8f3de1c ("drm/amd/display: Limit DCN32 8 channel or less parts to DPM1
for FPO")
Cc: [email protected]
Signed-off-by: Xi Ruoyao <[email protected]>
---
drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
index 7ebb7d1193af..c7fd604024d6 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
@@ -1785,7 +1785,10 @@ static bool dml1_validate(struct dc *dc, struct dc_state
*context, enum dc_valid
dc->res_pool->funcs->calculate_wm_and_dlg(dc, context, pipes, pipe_cnt, vlevel);
+ DC_FP_START();
dcn32_override_min_req_memclk(dc, context);
+ DC_FP_END();
+
dcn32_override_min_req_dcfclk(dc, context);
BW_VAL_TRACE_END_WATERMARKS();
