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

[Talha Nassar]

From: talha nassar <talha.nassar at 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 at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Signed-off-by: talha nassar <talha.nassar at 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