This is a note to let you know that I've just added the patch titled
drm/msm/disp/dpu1: add safe lut config in dpu driver
to the 5.14-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-msm-disp-dpu1-add-safe-lut-config-in-dpu-driver.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5bccb945f38b2aff334619b23b50bb0a6a9995a5 Mon Sep 17 00:00:00 2001
From: Kalyan Thota <kalyan_t@xxxxxxxxxxxxxx>
Date: Wed, 4 Aug 2021 02:40:28 -0700
Subject: drm/msm/disp/dpu1: add safe lut config in dpu driver
From: Kalyan Thota <kalyan_t@xxxxxxxxxxxxxx>
commit 5bccb945f38b2aff334619b23b50bb0a6a9995a5 upstream.
Add safe lut configuration for all the targets in dpu
driver as per QOS recommendation.
Issue reported on SC7280:
With wait-for-safe feature in smmu enabled, RT client
buffer levels are checked to be safe before smmu invalidation.
Since display was always set to unsafe it was delaying the
invalidaiton process thus impacting the performance on NRT clients
such as eMMC and NVMe.
Validated this change on SC7280, With this change eMMC performance
has improved significantly.
Changes in v2:
- Add fixes tag (Sai)
- CC stable kernel (Dimtry)
Changes in v3:
- Correct fixes tag with appropriate hash (stephen)
- Resend patch adding reviewed by tag
- Resend patch adding correct format for pushing into stable tree (Greg)
Fixes: 591e34a091d1 ("drm/msm/disp/dpu1: add support for display for SC7280 target")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Kalyan Thota <kalyan_t@xxxxxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx> (sc7280, sc7180)
Link: https://lore.kernel.org/r/1628070028-2616-1-git-send-email-kalyan_t@xxxxxxxxxxxxxx
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -974,6 +974,7 @@ static const struct dpu_perf_cfg sdm845_
.amortizable_threshold = 25,
.min_prefill_lines = 24,
.danger_lut_tbl = {0xf, 0xffff, 0x0},
+ .safe_lut_tbl = {0xfff0, 0xf000, 0xffff},
.qos_lut_tbl = {
{.nentry = ARRAY_SIZE(sdm845_qos_linear),
.entries = sdm845_qos_linear
@@ -1001,6 +1002,7 @@ static const struct dpu_perf_cfg sc7180_
.min_dram_ib = 1600000,
.min_prefill_lines = 24,
.danger_lut_tbl = {0xff, 0xffff, 0x0},
+ .safe_lut_tbl = {0xfff0, 0xff00, 0xffff},
.qos_lut_tbl = {
{.nentry = ARRAY_SIZE(sc7180_qos_linear),
.entries = sc7180_qos_linear
@@ -1028,6 +1030,7 @@ static const struct dpu_perf_cfg sm8150_
.min_dram_ib = 800000,
.min_prefill_lines = 24,
.danger_lut_tbl = {0xf, 0xffff, 0x0},
+ .safe_lut_tbl = {0xfff8, 0xf000, 0xffff},
.qos_lut_tbl = {
{.nentry = ARRAY_SIZE(sm8150_qos_linear),
.entries = sm8150_qos_linear
@@ -1056,6 +1059,7 @@ static const struct dpu_perf_cfg sm8250_
.min_dram_ib = 800000,
.min_prefill_lines = 35,
.danger_lut_tbl = {0xf, 0xffff, 0x0},
+ .safe_lut_tbl = {0xfff0, 0xff00, 0xffff},
.qos_lut_tbl = {
{.nentry = ARRAY_SIZE(sc7180_qos_linear),
.entries = sc7180_qos_linear
@@ -1084,6 +1088,7 @@ static const struct dpu_perf_cfg sc7280_
.min_dram_ib = 1600000,
.min_prefill_lines = 24,
.danger_lut_tbl = {0xffff, 0xffff, 0x0},
+ .safe_lut_tbl = {0xff00, 0xff00, 0xffff},
.qos_lut_tbl = {
{.nentry = ARRAY_SIZE(sc7180_qos_macrotile),
.entries = sc7180_qos_macrotile
Patches currently in stable-queue which might be from kalyan_t@xxxxxxxxxxxxxx are
queue-5.14/drm-msm-disp-dpu1-add-safe-lut-config-in-dpu-driver.patch
