MIPS: lantiq: Force the crossbar to big endian

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11450/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/mips/lantiq/xway/reset.c b/arch/mips/lantiq/xway/reset.c
index 4b52ce6d38f8..bc29bb349e94 100644
--- a/arch/mips/lantiq/xway/reset.c
+++ b/arch/mips/lantiq/xway/reset.c
@@ -40,6 +40,10 @@
 #define RCU_GFS_ADD2_XRX330     0x00AC
 #define RCU_GFS_ADD3_XRX330     0x0264
 
+/* xbar BE flag */
+#define RCU_AHB_ENDIAN          0x004C
+#define RCU_VR9_BE_AHB1S        0x00000008
+
 /* reboot bit */
 #define RCU_RD_GPHY0_XRX200     BIT(31)
 #define RCU_RD_SRST             BIT(30)
@@ -369,6 +373,10 @@ static int __init mips_reboot_setup(void)
             of_machine_is_compatible("lantiq,vr9"))
                 ltq_usb_init();
 
+        if (of_machine_is_compatible("lantiq,vr9"))
+                ltq_rcu_w32(ltq_rcu_r32(RCU_AHB_ENDIAN) | RCU_VR9_BE_AHB1S,
+                            RCU_AHB_ENDIAN);
+
         _machine_restart = ltq_machine_restart;
         _machine_halt = ltq_machine_halt;
         pm_power_off = ltq_machine_power_off;