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From 393bc9a42fe47f1f03aab0fa6dd2a21425136900 Mon Sep 17 00:00:00 2001
From: Hugo Hu <hugo.hu@amd.com>
Date: Wed, 21 Nov 2018 14:34:10 +0800
Subject: [PATCH 1008/2940] drm/amd/display: Add debug option to force fclk
request
[Why]
So that we can adjust fclk for debugging purposes.
[How]
Add option to force adjust fclk request to pplib.
Signed-off-by: Hugo Hu <hugo.hu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Chaudhary Amit Kumar <Chaudharyamit.Kumar@amd.com>
---
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index d0d67d4429f7..61481e4e5144 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -255,6 +255,7 @@ struct dc_debug_options {
bool scl_reset_length10;
bool hdmi20_disable;
bool skip_detection_link_training;
+ unsigned int force_fclk_khz;
};
struct dc_debug_data {
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c
index da2703354b8d..d4824a1b327b 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c
@@ -200,6 +200,7 @@ static void dcn1_update_clocks(struct clk_mgr *clk_mgr,
bool safe_to_lower)
{
struct dc *dc = clk_mgr->ctx->dc;
+ struct dc_debug_options *debug = &dc->debug;
struct dc_clocks *new_clocks = &context->bw.dcn.clk;
struct pp_smu_display_requirement_rv *smu_req_cur =
&dc->res_pool->pp_smu_req;
@@ -243,6 +244,9 @@ static void dcn1_update_clocks(struct clk_mgr *clk_mgr,
}
// F Clock
+ if (debug->force_fclk_khz != 0)
+ new_clocks->fclk_khz = debug->force_fclk_khz;
+
if (should_set_clock(safe_to_lower, new_clocks->fclk_khz, clk_mgr->clks.fclk_khz)) {
clk_mgr->clks.fclk_khz = new_clocks->fclk_khz;
smu_req.hard_min_fclk_khz = new_clocks->fclk_khz;
--
2.17.1
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