[igt-dev] [PATCH i-g-t] i915/gem_workarounds: adding 0xe420 register to WO list

Talha Nassar
2018-12-19T17:10:32Z

From: talha nassar <talha.nassar@intel.com>

HW team confirmed that this register is write-only.

References: https://bugs.freedesktop.org/show_bug.cgi?id=107338
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: talha nassar <talha.nassar@intel.com>
---
tests/i915/gem_workarounds.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/i915/gem_workarounds.c b/tests/i915/gem_workarounds.c
index 78478ad..b7d7d9c 100644
--- a/tests/i915/gem_workarounds.c
+++ b/tests/i915/gem_workarounds.c
@@ -51,7 +51,8 @@ static struct write_only_list {
unsigned int gen;
uint32_t addr;
} wo_list[] = {
- { 10, 0xE5F0 } /* WaForceContextSaveRestoreNonCoherent:cnl */
+ { 10, 0xE5F0 }, /* WaForceContextSaveRestoreNonCoherent:cnl */
+ { 11, 0xE420 } /* WaEnableFloatBlendOptimization:icl */

/*
* FIXME: If you are contemplating adding stuff here
--
2.7.4