From c018819731be58e0de8a0ed60171ca6af3356c7c Mon Sep 17 00:00:00 2001
From: Vinod Govindapillai <vinod.govindapillai@intel.com>
Date: Tue, 6 Jun 2023 12:35:03 +0300
Subject: drm/i915: fix the derating percentage for MTL
Git-commit: 626765bb4b2e732e9a1595fc801f696dbde12db9
Patch-mainline: v6.5-rc1
References: jsc#PED-3527 jsc#PED-5475 jsc#PED-6068 jsc#PED-6070 jsc#PED-6116 jsc#PED-6120 jsc#PED-5065 jsc#PED-5477 jsc#PED-5511 jsc#PED-6041 jsc#PED-6069 jsc#PED-6071
Follow the values from bspec for the percentage overhead for
efficiency in MTL BW calculations.
Bspec: 64631
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606093509.221709-2-vinod.govindapillai@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_bw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index 597d5816ad1b..ab405c48ca3a 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -379,7 +379,7 @@ static const struct intel_sa_info mtl_sa_info = {
.deburst = 32,
.deprogbwlimit = 38, /* GB/s */
.displayrtids = 256,
- .derating = 20,
+ .derating = 10,
};
static int icl_get_bw_info(struct drm_i915_private *dev_priv, const struct intel_sa_info *sa)
--
2.42.0