--- zzzz-none-000/linux-4.9.218/drivers/mtd/maps/plat-ram.c	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ac-750/linux-4.9.218/drivers/mtd/maps/plat-ram.c	2022-11-30 09:46:20.000000000 +0000
@@ -178,7 +178,7 @@
 
 	/* remap the memory area */
 
-	info->map.virt = ioremap(res->start, info->map.size);
+	info->map.virt = ioremap_cache(res->start, info->map.size);
 	dev_dbg(&pdev->dev, "virt %p, %lu bytes\n", info->map.virt, info->map.size);
 
 	if (info->map.virt == NULL) {