powerpc/44x: Fix L2-cache support for 460GT

Also set L2C_CFG_RDBW on 460GT platforms and not only on 460EX.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/sysdev/ppc4xx_soc.c b/arch/powerpc/sysdev/ppc4xx_soc.c
index 5b32adc9a9b2..5c014350bf16 100644
--- a/arch/powerpc/sysdev/ppc4xx_soc.c
+++ b/arch/powerpc/sysdev/ppc4xx_soc.c
@@ -174,7 +174,8 @@ static int __init ppc4xx_l2c_probe(void)
                 | L2C_CFG_CPIM | L2C_CFG_TPIM | L2C_CFG_LIM | L2C_CFG_SMCM;
 
         /* Check for 460EX/GT special handling */
-        if (of_device_is_compatible(np, "ibm,l2-cache-460ex"))
+        if (of_device_is_compatible(np, "ibm,l2-cache-460ex") ||
+            of_device_is_compatible(np, "ibm,l2-cache-460gt"))
                 r |= L2C_CFG_RDBW;
 
         mtdcr(dcrbase_l2c + DCRN_L2C0_CFG, r);