drivers: rk_nand: zftl static wear leveling strategy optimize

1. Garbage collection does not deal with the updated blocks.
2. Static wear considers the SLC mode erase count and XLC
mode erase count

Change-Id: I3a404a686e48f8ae44f5e7e507f6d1ef633671d4
Signed-off-by: Yifeng Zhao <zyf@rock-chips.com>

drivers/rk_nand/rk_nand_blk.c

@@ -234,7 +234,7 @@ static int nand_blktrans_thread(void *arg)
 	int req_empty_times = 0;
 
 	spin_lock_irq(rq->queue_lock);
-	rk_ftl_gc_jiffies = HZ * 5;
+	rk_ftl_gc_jiffies = HZ / 10; /* do garbage collect after 100ms */
 	rk_ftl_gc_do = 0;
 	rk_ftl_gc_timeout.expires = jiffies + rk_ftl_gc_jiffies;
 	add_timer(&rk_ftl_gc_timeout);
@@ -477,8 +477,9 @@ static int nand_prase_cmdline_part(struct nand_part *pdisk_part)
 				> cap_size) {
 				pdisk_part[i].size = cap_size -
 					pdisk_part[i].offset;
-				pr_err("partition config error....\n");
-				if (pdisk_part[i].size)
+				pr_err("partition error....max cap:%x\n",
+					cap_size);
+				if (!pdisk_part[i].size)
 					return i;
 				else
 					return (i + 1);