From: Kai Chen
On GEN9LP, raise the RPS FUp Interrupt Limiter above softmax so that the
HW won't miss interrupt when requested max_freq is set back to RP0
value.
The (v2) is to explain a bit more detail background about the change in
the code.
Signed-off-by: Kai Chen
---
drivers/gpu/drm
From: Kai Chen
On GEN9LP, raise the RPS FUp Interrupt Limiter above softmax so that the
HW won't miss interrupt when requested max_freq is set back to RP0
value.
Signed-off-by: Kai Chen
---
drivers/gpu/drm/i915/intel_pm.c | 15 ++-
1 file changed, 14 insertions(+), 1 del
From: Kai Chen
In theory, decoupled mmio should require less cycles for single read/write
operation by avoiding frequent software forcewake. However, it turns out
this design not to be true on HW reality and not to provide any decoupling
benefit. It also introduces problems which cause
From: Kai Chen
This is a follow-up patch to the previous patch ([PATCH[1/2] drm/i915:
Disable decoupled MMIO) to remove the dead code for decoupled MMIO
implementation, as it won't be used any longer on GEN9LP.
Therefore, this patch reverts:
commit 85ee17ebeedd1af0dccd98f82ab4e644e29
From: Kai Chen
The decoupled MMIO feature doesn't work as intended by HW team. Enabling
it with forcewake will only make debugging efforts more difficult, so
let's disable it.
Fixes: 85ee17ebeedd ("drm/i915/bxt: Broxton decoupled MMIO")
Cc: Zhe Wang
Cc: Praveen Paneri
Cc
From: Kai Chen
This change is used as a backport fix from top of drm-intel ([PATCH]
drm/i915: Disable decoupled mmio for GEN9LP) to disable decoupled mmio
on GEN9LP for those shipped kernels as a quick fix.
V2:
- Add signed-off-by
Signed-off-by: Kai Chen
---
drivers/gpu/drm/i915/i915_pci.c
From: Kai Chen
The decoupled mmio feature doesn't work as intended by HW team. Enabling
it with forcewake will only make debugging efforts more difficult, so
let's just simply remove it.
v2:
- Remove dead code related to GEN9LP decoupled mmio.
- Change backgrounds: In theory, deco
From: Kai Chen
This change is used as a backport fix from top of drm-intel ([PATCH]
drm/i915: Disable decoupled mmio for GEN9LP) to disable decoupled mmio
on GEN9LP for those shipped kernels as a quick fix.
---
drivers/gpu/drm/i915/i915_pci.c | 1 -
1 file changed, 1 deletion(-)
diff --git a
From: Kai Chen
The decoupled mmio feature doesn't work as intended by HW team. Enabling
it with forcewake will only make debugging efforts more difficult, so
let's just simply remove it.
v2:
- Remove dead code related to GEN9LP decoupled mmio.
- Change backgrounds: In theory, deco
From: Kai Chen
The decoupled mmio feature doesn't work as intended by HW team. Enabling
it with forcewake will only make debugging efforts more difficult, so
let's just simply remove it.
v2:
- Remove dead code related to GEN9LP decoupled mmio.
- Change backgrounds: In theory, deco
From: Kai Chen
The decoupled mmio feature doesn't work as intended by HW team. Enabling
it with forcewake will only make debugging efforts more difficult, so
let's just simply remove it.
Signed-off-by: Kai Chen
---
drivers/gpu/drm/i915/i915_pci.c | 1 -
1 file changed, 1 deletio
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