The drive-strength-value must be set in accordance with the actual situation.
static void __init rk30_io_drive_strength_init(void)
{
-#if defined(CONFIG_ARCH_RK3066B) || defined(CONFIG_ARCH_RK3188)
+//modifyed by xbw£»at 2013-01-26
+//This value must be set in accordance with the actual situation.
+//so set the value in each driver their own file.
+#if 0 //#if defined(CONFIG_ARCH_RK3066B) || defined(CONFIG_ARCH_RK3188)
writel_relaxed(0x11001100, RK30_GRF_BASE + GRF_IO_CON4);
#endif
}