diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1305-drm-amd-display-set-clocks-to-0-on-suspend-on-dce80.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1305-drm-amd-display-set-clocks-to-0-on-suspend-on-dce80.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1305-drm-amd-display-set-clocks-to-0-on-suspend-on-dce80.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1305-drm-amd-display-set-clocks-to-0-on-suspend-on-dce80.patch new file mode 100644 index 00000000..94dd4418 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1305-drm-amd-display-set-clocks-to-0-on-suspend-on-dce80.patch @@ -0,0 +1,56 @@ +From eb1286c5a48d581bb6b4864ad9dfd8a924b7ded8 Mon Sep 17 00:00:00 2001 +From: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +Date: Tue, 5 Feb 2019 14:03:52 -0500 +Subject: [PATCH 1305/2940] drm/amd/display: set clocks to 0 on suspend on + dce80 + +[Why] +When a dce80 asic was suspended, the clocks were not set to 0. +Upon resume, the new clock was compared to the existing clock, +they were found to be the same, and so the clock was not set. +This resulted in a blackscreen. + +[How] +In atomic commit, check to see if there are any active pipes. +If no, set clocks to 0 + +Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +--- + .../drm/amd/display/dc/dce80/dce80_resource.c | 19 ++++++++++++++++--- + 1 file changed, 16 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c +index 2eca81b5cf2f..c109ace96be9 100644 +--- a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c ++++ b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c +@@ -792,9 +792,22 @@ bool dce80_validate_bandwidth( + struct dc *dc, + struct dc_state *context) + { +- /* TODO implement when needed but for now hardcode max value*/ +- context->bw.dce.dispclk_khz = 681000; +- context->bw.dce.yclk_khz = 250000 * MEMORY_TYPE_MULTIPLIER_CZ; ++ int i; ++ bool at_least_one_pipe = false; ++ ++ for (i = 0; i < dc->res_pool->pipe_count; i++) { ++ if (context->res_ctx.pipe_ctx[i].stream) ++ at_least_one_pipe = true; ++ } ++ ++ if (at_least_one_pipe) { ++ /* TODO implement when needed but for now hardcode max value*/ ++ context->bw.dce.dispclk_khz = 681000; ++ context->bw.dce.yclk_khz = 250000 * MEMORY_TYPE_MULTIPLIER_CZ; ++ } else { ++ context->bw.dce.dispclk_khz = 0; ++ context->bw.dce.yclk_khz = 0; ++ } + + return true; + } +-- +2.17.1 + |