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dm: core: Show device sequence instead in dm_dump_tree()

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Currently uclass index is shown in DM tree dump which ignores alias
sequence numbering. The result could be confusing since these 2 numbers
could be different. Show device sequence number instead as it's more
meaningful.

Also update documentation to use sequence number.

Signed-off-by: Zixun LI <admin@hifiphile.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Zixun LI 2024-08-02 11:28:12 +02:00 • committed by Tom Rini
parent 8a5642fa84
commit 2d76e724b4
2 changed files with 5 additions and 6 deletions
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7
doc/usage/cmd/dm.rst
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@ -112,9 +112,8 @@ This shows the full tree of devices including the following fields:
uclass
Shows the name of the uclass for the device
Index
Shows the index number of the device, within the uclass. This shows the
ordering within the uclass, but not the sequence number.
Seq
Shows the sequence number of the device, within the uclass.
Probed
Shows `+` if the device is active
@ -366,7 +365,7 @@ dm tree
This example shows the abridged sandbox output::
=> dm tree
Class Index Probed Driver Name
Class Seq Probed Driver Name
-----------------------------------------------------------
root 0 [ + ] root_driver root_driver
demo 0 [ ] demo_shape_drv |-- demo_shape_drv

4
drivers/core/dump.c
View file

@ -40,7 +40,7 @@ static void show_devices(struct udevice *dev, int depth, int last_flag,
/* print the first 20 characters to not break the tree-format. */
printf(CONFIG_IS_ENABLED(USE_TINY_PRINTF) ? " %s %d [ %c ] %s " :
" %-10.10s %3d [ %c ] %-20.20s ", dev->uclass->uc_drv->name,
dev_get_uclass_index(dev, NULL),
dev->seq_,
flags & DM_FLAG_ACTIVATED ? '+' : ' ', dev->driver->name);
for (i = depth; i >= 0; i--) {
@ -129,7 +129,7 @@ void dm_dump_tree(char *dev_name, bool extended, bool sort)
{
struct udevice *root;
printf(" Class Index Probed Driver Name\n");
printf(" Class Seq Probed Driver Name\n");
printf("-----------------------------------------------------------\n");
root = dm_root();