Blackfin arch: read SYSCR on newer parts that mirror the bits of SWRST in it

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index a23fec573c0a..86feb4274218 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -826,7 +826,13 @@ void __init setup_arch(char **cmdline_p)
 
         printk(KERN_INFO "Boot Mode: %i\n", bfin_read_SYSCR() & 0xF);
 
+        /* Newer parts mirror SWRST bits in SYSCR */
+#if defined(CONFIG_BF53x) || defined(CONFIG_BF561) || \
+    defined(CONFIG_BF538) || defined(CONFIG_BF539)
         _bfin_swrst = bfin_read_SWRST();
+#else
+        _bfin_swrst = bfin_read_SYSCR();
+#endif
 
 #ifdef CONFIG_DEBUG_DOUBLEFAULT_PRINT
         bfin_write_SWRST(_bfin_swrst & ~DOUBLE_FAULT);