For debug purposes it is sometimes useful to have the ability to
interact with the driver functionality of a phy from the command line
(e.g. to manually issue startup, configuration, or shutdown commands to
the phy device).
This patch adds such a command, which allows issuing the following
commands to a phy:
* getting the driver's name
* running the phy's configuration procedure (via calling phy_config)
* running the phy's startup procedure (via calling phy_startup)
* running the phy's shutdown procedure (via calling phy_shutdown)
Signed-off-by: Mario Six <mario....@gdsys.cc>
---
cmd/Kconfig | 6 ++++++
cmd/mdio.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 71 insertions(+)
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 322e466313..6425c425d6 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -835,6 +835,12 @@ config CMD_MII
help
Enable MII utility commands.
+config CMD_MII_DRIVER
+ bool "mii driver"
+ depends on CMD_MII
+ help
+ Enable MII driver utility command.
+
config CMD_PING
bool "ping"
help
diff --git a/cmd/mdio.c b/cmd/mdio.c
index 3f11963006..abd763ef1c 100644
--- a/cmd/mdio.c
+++ b/cmd/mdio.c
@@ -180,6 +180,37 @@ static int extract_phy_range(char *const argv[], int argc,
struct mii_dev **bus,
return extract_range(argv[0], addrlo, addrhi);
}
+#ifdef CONFIG_CMD_MII_DRIVER
+static struct phy_device *extract_phydev(char *const argv[], int argc)
+{
+ struct phy_device *phydev;
+ struct mii_dev *bus;
+ int addr;
+
+ if (argc == 1) {
+ phydev = mdio_phydev_for_ethname(argv[0]);
+
+ if (phydev)
+ return phydev;
+
+ bus = mdio_get_current_dev();
+ } else {
+ bus = miiphy_get_dev_by_name(argv[0]);
+ }
+
+ if (!bus)
+ return NULL;
+
+ addr = simple_strtol(argv[1], NULL, 0);
+ if (addr >= PHY_MAX_ADDR)
+ return NULL;
+
+ phydev = bus->phymap[addr];
+
+ return phydev;
+}
+#endif
+
/* ---------------------------------------------------------------- */
static int do_mdio(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
@@ -212,6 +243,36 @@ static int do_mdio(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
if (flag & CMD_FLAG_REPEAT)
op[0] = last_op[0];
+#ifdef CONFIG_CMD_MII_DRIVER
+ if (op[0] == 'd') {
+ if ((argc < 4) || (argc > 5) || (strlen(argv[2]) < 2))
+ return CMD_RET_USAGE;
+
+ phydev = extract_phydev(&argv[3], argc - 3);
+ if (!phydev)
+ return CMD_RET_USAGE;
+
+ switch (argv[2][1]) {
+ case 'e': /* g'e't */
+ printf("driver: ");
+ if (phydev->drv)
+ printf("%s", phydev->drv->name);
+ printf("\n");
+ break;
+ case 'o': /* c'o'nfig */
+ phy_config(phydev);
+ break;
+ case 't': /* s't'artup */
+ phy_startup(phydev);
+ break;
+ case 'h': /* s'h'utdown */
+ phy_shutdown(phydev);
+ break;
+ }
+ return 0;
+ }
+#endif
+
if (strlen(argv[1]) > 1) {
op[1] = argv[1][1];
if (op[1] == 'x') {
@@ -304,6 +365,10 @@ U_BOOT_CMD(
"read PHY's extended register at <devad>.<reg>\n"
"mdio wx <phydev> [<devad>.]<reg> <data> - "
"write PHY's extended register at <devad>.<reg>\n"
+#ifdef CONFIG_CMD_MII_DRIVER
+ "mdio driver <get | config | startup | shutdown> <phydev> - "
+ "<get | config | startup | shutdown> phy driver\n"
+#endif
"<phydev> may be:\n"
" <busname> <addr>\n"
" <addr>\n"
--
2.11.0
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