newton: improve smc drivers

1.减少smc0_write函数中的delay，提高irda模块调用该接口进行数据发送的效率

diff --git a/drivers/smc/rk29_smc.c b/drivers/smc/rk29_smc.c
index 7f1339a1bb8849db744a178c223f3458b98e2c4a..36d99d9fbfbbe49049a1d0a993338042ceb46a67 100755 (executable)
--- a/drivers/smc/rk29_smc.c
+++ b/drivers/smc/rk29_smc.c
@@ -155,7 +155,7 @@ int smc0_write(u32 addr, u16 data)
     u16 *p = rank0_vir_base + addr;\r
        int readdata;\r
     *p = data;\r
-       udelay(5);\r
+       udelay(2);\r
        //readdata = *p;\r
        //mdelay(5);\r
        //mdelay(10);\r