From: Jun Lei <jun....@amd.com>
[why]
On some modes SMU will be in infinite loop state at boot, this is
because driver assumes p_state_support is false, but this is the
opposite of the assumed boot state by SMU. we optimize away
notifying SMU about no pstate, and so they will get stuck
[how]
when we init clk manager, init pstate to true, so it matches driver load
assumption
Signed-off-by: Jun Lei <jun....@amd.com>
Reviewed-by: Tony Cheng <tony.ch...@amd.com>
Acked-by: Leo Li <sunpeng...@amd.com>
---
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c
b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c
index 08a774fc7b67..740f5db22bb5 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c
@@ -301,6 +301,8 @@ void dcn2_update_clocks_fpga(struct clk_mgr *clk_mgr,
void dcn2_init_clocks(struct clk_mgr *clk_mgr)
{
memset(&(clk_mgr->clks), 0, sizeof(struct dc_clocks));
+ // Assumption is that boot state always supports pstate
+ clk_mgr->clks.p_state_change_support = true;
}
void dcn2_enable_pme_wa(struct clk_mgr *clk_mgr_base)
--
2.22.0
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