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.six@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"