This adds a subcommand to dm to dump out what drivers are installed, and their
compatible strings. I have found this useful in ensuring that I have the correct
drivers compiled, and that I have put in the correct compatible strings.
Signed-off-by: Sean Anderson <sean...@gmail.com>
---
Changes for v2:
- Check if entry->of_match is NULL before accessing it
cmd/dm.c | 12 +++++++++++-
drivers/core/dump.c | 20 ++++++++++++++++++++
include/dm/util.h | 3 +++
3 files changed, 34 insertions(+), 1 deletion(-)
diff --git a/cmd/dm.c b/cmd/dm.c
index 7b271db0bb..7a90685f8b 100644
--- a/cmd/dm.c
+++ b/cmd/dm.c
@@ -40,10 +40,19 @@ static int do_dm_dump_devres(cmd_tbl_t *cmdtp, int flag,
int argc,
return 0;
}
+static int do_dm_dump_drivers(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ dm_dump_drivers();
+
+ return 0;
+}
+
static cmd_tbl_t test_commands[] = {
U_BOOT_CMD_MKENT(tree, 0, 1, do_dm_dump_all, "", ""),
U_BOOT_CMD_MKENT(uclass, 1, 1, do_dm_dump_uclass, "", ""),
U_BOOT_CMD_MKENT(devres, 1, 1, do_dm_dump_devres, "", ""),
+ U_BOOT_CMD_MKENT(drivers, 1, 1, do_dm_dump_drivers, "", ""),
};
static __maybe_unused void dm_reloc(void)
@@ -84,5 +93,6 @@ U_BOOT_CMD(
"Driver model low level access",
"tree Dump driver model tree ('*' = activated)\n"
"dm uclass Dump list of instances for each uclass\n"
- "dm devres Dump list of device resources for each device"
+ "dm devres Dump list of device resources for each device\n"
+ "dm drivers Dump list of drivers and their compatible strings"
);
diff --git a/drivers/core/dump.c b/drivers/core/dump.c
index 4704049aee..b5046398d4 100644
--- a/drivers/core/dump.c
+++ b/drivers/core/dump.c
@@ -96,3 +96,23 @@ void dm_dump_uclass(void)
puts("\n");
}
}
+
+void dm_dump_drivers(void)
+{
+ struct driver *d = ll_entry_start(struct driver, driver);
+ const int n_ents = ll_entry_count(struct driver, driver);
+ struct driver *entry;
+ const struct udevice_id *match;
+
+ puts("Driver Compatible\n");
+ puts("--------------------------------\n");
+ for (entry = d; entry < d + n_ents; entry++) {
+ for (match = entry->of_match;
+ match && match->compatible; match++)
+ printf("%-20.20s %s\n",
+ match == entry->of_match ? entry->name : "",
+ match->compatible);
+ if (match == entry->of_match)
+ printf("%-20.20s\n", entry->name);
+ }
+}
diff --git a/include/dm/util.h b/include/dm/util.h
index 348c2ace3c..0ccb3fbadf 100644
--- a/include/dm/util.h
+++ b/include/dm/util.h
@@ -39,6 +39,9 @@ static inline void dm_dump_devres(void)
}
#endif
+/* Dump out a list of drivers */
+void dm_dump_drivers(void);
+
/**
* Check if an of node should be or was bound before relocation.
*
--
2.25.0
