diff options
| author | Louis Mayencourt <louis.mayencourt@arm.com> | 2019-04-09 16:29:01 +0100 |
|---|---|---|
| committer | Louis Mayencourt <louis.mayencourt@arm.com> | 2019-04-17 13:46:43 +0100 |
| commit | 0e985d708e8f429c1fa1f557d3eea90e32de5228 (patch) | |
| tree | 1fcdb2dc74d4f1f127a9360319f3426e37c2dbf5 /lib/cpus/cpu-ops.mk | |
| parent | 2c3b76ce7b9e36e5c8be3c454110e070a20332ca (diff) | |
| download | platform_external_arm-trusted-firmware-0e985d708e8f429c1fa1f557d3eea90e32de5228.tar.gz platform_external_arm-trusted-firmware-0e985d708e8f429c1fa1f557d3eea90e32de5228.tar.bz2 platform_external_arm-trusted-firmware-0e985d708e8f429c1fa1f557d3eea90e32de5228.zip | |
DSU: Implement workaround for errata 798953
Under certain near idle conditions, DSU may miss response transfers on
the ACE master or Peripheral port, leading to deadlock. This workaround
disables high-level clock gating of the DSU to prevent this.
Change-Id: I820911d61570bacb38dd325b3519bc8d12caa14b
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
Diffstat (limited to 'lib/cpus/cpu-ops.mk')
| -rw-r--r-- | lib/cpus/cpu-ops.mk | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk index bfee990bb..4deb262d8 100644 --- a/lib/cpus/cpu-ops.mk +++ b/lib/cpus/cpu-ops.mk @@ -214,6 +214,10 @@ ERRATA_A76_1220197 ?=0 # only to r0p0 and r1p0 of the Neoverse N1 cpu. ERRATA_N1_1043202 ?=1 +# Flag to apply DSU erratum 798953. This erratum applies to DSUs revision r0p0. +# Applying the workaround results in higher DSU power consumption on idle. +ERRATA_DSU_798953 ?=0 + # Flag to apply DSU erratum 936184. This erratum applies to DSUs containing # the ACP interface and revision < r2p0. Applying the workaround results in # higher DSU power consumption on idle. @@ -375,6 +379,10 @@ $(eval $(call add_define,ERRATA_A76_1220197)) $(eval $(call assert_boolean,ERRATA_N1_1043202)) $(eval $(call add_define,ERRATA_N1_1043202)) +# Process ERRATA_DSU_798953 flag +$(eval $(call assert_boolean,ERRATA_DSU_798953)) +$(eval $(call add_define,ERRATA_DSU_798953)) + # Process ERRATA_DSU_936184 flag $(eval $(call assert_boolean,ERRATA_DSU_936184)) $(eval $(call add_define,ERRATA_DSU_936184)) |