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dm: device: Request next sequence number

For CONFIG_OF_PRIOR_STAGE, in the absence of a device tree alias for a
given device, use the next request number for that type of device.
This allows aliases to be used when they're available, while still
allowing unaliased devices to be probed.

Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Thomas Fitzsimmons 4 years ago
parent
commit
7f3289bf6d
2 changed files with 8 additions and 1 deletions
  1. 5 0
      drivers/core/device.c
  2. 3 1
      drivers/core/uclass.c

+ 5 - 0
drivers/core/device.c

@@ -82,6 +82,11 @@ static int device_bind_common(struct udevice *parent, const struct driver *drv,
 		if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
 			if (uc->uc_drv->name && ofnode_valid(node))
 				dev_read_alias_seq(dev, &dev->req_seq);
+#if CONFIG_IS_ENABLED(OF_PRIOR_STAGE)
+			if (dev->req_seq == -1)
+				dev->req_seq =
+					uclass_find_next_free_req_seq(drv->id);
+#endif
 		} else {
 			dev->req_seq = uclass_find_next_free_req_seq(drv->id);
 		}

+ 3 - 1
drivers/core/uclass.c

@@ -269,7 +269,9 @@ int uclass_find_device_by_name(enum uclass_id id, const char *name,
 	return -ENODEV;
 }
 
-#if !CONFIG_IS_ENABLED(OF_CONTROL) || CONFIG_IS_ENABLED(OF_PLATDATA)
+#if !CONFIG_IS_ENABLED(OF_CONTROL) || \
+    CONFIG_IS_ENABLED(OF_PLATDATA) || \
+    CONFIG_IS_ENABLED(OF_PRIOR_STAGE)
 int uclass_find_next_free_req_seq(enum uclass_id id)
 {
 	struct uclass *uc;