zephyr: Read block_size for zephyr_flash_area from device tree.

laodzu · laodzu · commit c846714b48fe · 2025-02-17T22:37:11.000+01:00
The block_size parameter needs to be read from the device tree rather
than hard-coding to 4096.

Signed-off-by: Detlev Zundel &lt;dzu@member.fsf.org&gt;
diff --git a/ports/zephyr/main.c b/ports/zephyr/main.c
@@ -107,7 +107,8 @@ static void vfs_init(void) {
     bdev = MP_OBJ_TYPE_GET_SLOT(&zephyr_disk_access_type, make_new)(&zephyr_disk_access_type, ARRAY_SIZE(args), 0, args);
     mount_point_str = "/sd";
     #elif defined(CONFIG_FLASH_MAP) && FIXED_PARTITION_EXISTS(storage_partition)
-    mp_obj_t args[] = { MP_OBJ_NEW_SMALL_INT(FIXED_PARTITION_ID(storage_partition)), MP_OBJ_NEW_SMALL_INT(4096) };
+    #define DT_DRV_COMPAT zephyr_flash_disk
+    mp_obj_t args[] = { MP_OBJ_NEW_SMALL_INT(FIXED_PARTITION_ID(storage_partition)), MP_OBJ_NEW_SMALL_INT(DT_INST_PROP(0, cache_size)) };
     bdev = MP_OBJ_TYPE_GET_SLOT(&zephyr_flash_area_type, make_new)(&zephyr_flash_area_type, ARRAY_SIZE(args), 0, args);
     mount_point_str = "/flash";
     #endif
