diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3009-drm-amd-display-initialize-p_state-to-proper-value.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3009-drm-amd-display-initialize-p_state-to-proper-value.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3009-drm-amd-display-initialize-p_state-to-proper-value.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3009-drm-amd-display-initialize-p_state-to-proper-value.patch new file mode 100644 index 00000000..5875599b --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3009-drm-amd-display-initialize-p_state-to-proper-value.patch @@ -0,0 +1,38 @@ +From b4d0759597dff75d37e96d8cc8548cfaf2eef474 Mon Sep 17 00:00:00 2001 +From: Jun Lei <Jun.Lei@amd.com> +Date: Fri, 31 May 2019 15:14:13 -0400 +Subject: [PATCH 3009/4256] drm/amd/display: initialize p_state to proper value + +[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.Lei@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Leo Li <sunpeng.li@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) +-- +2.17.1 + |