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-rw-r--r--docs/porting-guide.md12
-rw-r--r--docs/user-guide.md5
2 files changed, 17 insertions, 0 deletions
diff --git a/docs/porting-guide.md b/docs/porting-guide.md
index 56ddbb1c..004f70d6 100644
--- a/docs/porting-guide.md
+++ b/docs/porting-guide.md
@@ -476,6 +476,18 @@ memory layout implies some image overlaying like in ARM standard platforms.
Defines the maximum address that the TSP's progbits sections can occupy.
+If the platform port uses the PL061 GPIO driver, the following constant may
+optionally be defined:
+
+* **PLAT_PL061_MAX_GPIOS**
+ Maximum number of GPIOs required by the platform. This allows control how
+ much memory is allocated for PL061 GPIO controllers. The default value is
+ 32.
+ [For example, define the build flag in platform.mk]:
+ PLAT_PL061_MAX_GPIOS := 160
+ $(eval $(call add_define,PLAT_PL061_MAX_GPIOS))
+
+
### File : plat_macros.S [mandatory]
Each platform must ensure a file of this name is in the system include path with
diff --git a/docs/user-guide.md b/docs/user-guide.md
index f01b8ff3..9c17e353 100644
--- a/docs/user-guide.md
+++ b/docs/user-guide.md
@@ -512,6 +512,11 @@ map is explained in the [Firmware Design].
Trusted Firmware must be compiled with GICv2 only driver using
`FVP_USE_GIC_DRIVER=FVP_GICV2` build option.
+* `FVP_CLUSTER_COUNT` : Configures the cluster count to be used to
+ build the topology tree within Trusted Firmware. By default the
+ Trusted Firmware is configured for dual cluster topology and this option
+ can be used to override the default value.
+
### Creating a Firmware Image Package
FIPs are automatically created as part of the build instructions described in