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-rw-r--r--arch/m68k/kernel/head.S4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/m68k/kernel/head.S b/arch/m68k/kernel/head.S
index 7d7913f5dce..4c99bab7e66 100644
--- a/arch/m68k/kernel/head.S
+++ b/arch/m68k/kernel/head.S
@@ -2915,7 +2915,9 @@ func_start serial_init,%d0/%d1/%a0/%a1
#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B)
movel %pc@(L(mac_sccbase)),%a0
- /* Reset SCC device */
+ /* Reset SCC register pointer */
+ moveb %a0@(mac_scc_cha_a_ctrl_offset),%d0
+ /* Reset SCC device: write register pointer then register value */
moveb #9,%a0@(mac_scc_cha_a_ctrl_offset)
moveb #0xc0,%a0@(mac_scc_cha_a_ctrl_offset)
/* Wait for 5 PCLK cycles, which is about 68 CPU cycles */