Add detail to README

1 files changed, 20 insertions, 4 deletions

diff --git a/README.md b/README.md
index a6bc000..70e4846 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,8 @@ and raj.khem@gmail.com
 Maintainers: Khem Raj <raj.khem@gmail.com>
              Yves Vandervennet <yvanderv@opensource.altera.com>
 
-Specifying Kernel Version
-=========================
+Specifying Kernel Versions
+==========================
 This layer has a few providers for the kernel.  These are the linux-altera, 
 linux-altera-ltsi, and linux-altera-ltsi-rt kernels.  There are also 
 linux-altera-dev and linux-altera-ltsi-dev kernels which follow the current 
@@ -31,9 +31,25 @@ or for the linux-altera-ltsi kernel
 Please note that older kernels will not compile with GCC 5+ and you will need 
 to specify in your conf/local.conf to revert to older 4.9 toolchain. 
 
-        GCCVERSION = "4.9%"
 
-        or
+Specifying Toolchain Versions
+=============================
+The default Toolchain for ARM in Angstrom is the linaro toolchain.  To specify
+the use of this toolchain in Yocto add the following to conf/local.conf
+
+        GCCVERSION = "linaro-5.2"
+        SDKGCCVERSION = "linaro-5.2"
+        DEFAULTTUNE = "cortexa9hf-neon"
+
+To use older kernels not supported by GCC 5+ you will need to use the 4.9 toolchain.
+
+For Yocto:
+        GCCVERSION = "linaro-4.9"
+        SDKGCCVERSION = "linaro-4.9"
+        DEFAULTTUNE = "cortexa9hf-neon"
+
+For Angstrom:
 
         ANGSTROM_GCC_VERSION_arm = "linaro-4.9%"
 
+