This is a note to let you know that I've just added the patch titled
drm/amd/pm: correct the pcie link state check for SMU13
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-pm-correct-the-pcie-link-state-check-for-smu13.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b9a24d8bd51e2db425602fa82d7f4c06aa3db852 Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@xxxxxxx>
Date: Fri, 7 Apr 2023 17:12:15 +0800
Subject: drm/amd/pm: correct the pcie link state check for SMU13
From: Evan Quan <evan.quan@xxxxxxx>
commit b9a24d8bd51e2db425602fa82d7f4c06aa3db852 upstream.
Update the driver implementations to fit those data exposed
by PMFW.
Signed-off-by: Evan Quan <evan.quan@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h | 6 ++++++
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c | 4 ++--
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c | 4 ++--
3 files changed, 10 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h
@@ -61,6 +61,12 @@
#define CTF_OFFSET_HOTSPOT 5
#define CTF_OFFSET_MEM 5
+static const int pmfw_decoded_link_speed[5] = {1, 2, 3, 4, 5};
+static const int pmfw_decoded_link_width[7] = {0, 1, 2, 4, 8, 12, 16};
+
+#define DECODE_GEN_SPEED(gen_speed_idx) (pmfw_decoded_link_speed[gen_speed_idx])
+#define DECODE_LANE_WIDTH(lane_width_idx) (pmfw_decoded_link_width[lane_width_idx])
+
struct smu_13_0_max_sustainable_clocks {
uint32_t display_clock;
uint32_t phy_clock;
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
@@ -1125,8 +1125,8 @@ static int smu_v13_0_0_print_clk_levels(
(pcie_table->pcie_lane[i] == 5) ? "x12" :
(pcie_table->pcie_lane[i] == 6) ? "x16" : "",
pcie_table->clk_freq[i],
- ((gen_speed - 1) == pcie_table->pcie_gen[i]) &&
- (lane_width == link_width[pcie_table->pcie_lane[i]]) ?
+ (gen_speed == DECODE_GEN_SPEED(pcie_table->pcie_gen[i])) &&
+ (lane_width == DECODE_LANE_WIDTH(link_width[pcie_table->pcie_lane[i]])) ?
"*" : "");
break;
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
@@ -1074,8 +1074,8 @@ static int smu_v13_0_7_print_clk_levels(
(pcie_table->pcie_lane[i] == 5) ? "x12" :
(pcie_table->pcie_lane[i] == 6) ? "x16" : "",
pcie_table->clk_freq[i],
- (gen_speed == pcie_table->pcie_gen[i]) &&
- (lane_width == pcie_table->pcie_lane[i]) ?
+ (gen_speed == DECODE_GEN_SPEED(pcie_table->pcie_gen[i])) &&
+ (lane_width == DECODE_LANE_WIDTH(pcie_table->pcie_lane[i])) ?
"*" : "");
break;
Patches currently in stable-queue which might be from evan.quan@xxxxxxx are
queue-6.2/drm-amd-pm-correct-the-pcie-link-state-check-for-smu13.patch
