Anton Vorontsov wrote:
@@ -495,6 +495,16 @@ static void fsl_elbc_write_buf(struct mtd_info *mtd, const
u8 *buf, int len)
}
memcpy_toio(&ctrl->addr[ctrl->index], buf, len);
+#ifdef CONFIG_PPC_MPC837x
+ /*
+ * This is workaround for the weird elbc hangs on the MPC837X CPUs,
+ * Scott Wood says: "...perhaps difference in how long it takes a
+ * write to make it through the localbus compared to a write to IMMR
+ * is causing problems, and sync isn't helping for some reason."
+ * Reading back the last byte helps though.
+ */
+ in_8(&ctrl->addr[ctrl->index] + len - 1);
+#endif
Let's do it regardless of chip -- odds are the issue exists on all
implementations, and it's just a function of what frequencies things are
running at.
-Scott
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