diff options
| author | Lucas Stach <l.stach@pengutronix.de> | 2018-12-10 14:38:14 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-12-13 07:46:56 +0100 |
| commit | d71cbc669495051c00f36cccfa9197451530f264 (patch) | |
| tree | 72a1b96ba975e1849f39ebc187e53b87981f4945 /arch | |
| parent | 819da026492b3ccb22ad0998e08c477006001928 (diff) | |
| download | barebox-d71cbc669495051c00f36cccfa9197451530f264.tar.gz barebox-d71cbc669495051c00f36cccfa9197451530f264.tar.xz | |
ARM: rdu2: add command to reset network switch
This command allows to reset the network switch on the DEB,
clearing any DSA configuration, which may still be present from
a prior boot.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boards/zii-imx6q-rdu2/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/boards/zii-imx6q-rdu2/switch-cmd.c | 49 |
2 files changed, 50 insertions, 1 deletions
diff --git a/arch/arm/boards/zii-imx6q-rdu2/Makefile b/arch/arm/boards/zii-imx6q-rdu2/Makefile index c6285362f2..10dfba3a3c 100644 --- a/arch/arm/boards/zii-imx6q-rdu2/Makefile +++ b/arch/arm/boards/zii-imx6q-rdu2/Makefile @@ -1,3 +1,3 @@ -obj-y += board.o +obj-y += board.o switch-cmd.o lwl-y += lowlevel.o bbenv-y += defaultenv-rdu2 diff --git a/arch/arm/boards/zii-imx6q-rdu2/switch-cmd.c b/arch/arm/boards/zii-imx6q-rdu2/switch-cmd.c new file mode 100644 index 0000000000..bdba46fb36 --- /dev/null +++ b/arch/arm/boards/zii-imx6q-rdu2/switch-cmd.c @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2018 Zodiac Inflight Innovation + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <common.h> +#include <command.h> +#include <i2c/i2c.h> + +static int do_rave_switch_reset(int argc, char *argv[]) +{ + struct i2c_client client; + u8 reg; + + if (!of_machine_is_compatible("zii,imx6q-zii-rdu2") && + !of_machine_is_compatible("zii,imx6qp-zii-rdu2")) + return -ENODEV; + + client.adapter = i2c_get_adapter(1); + if (!client.adapter) + return -ENODEV; + + /* address of the switch watchdog microcontroller */ + client.addr = 0x38; + reg = 0x78; + /* set switch reset time to 100ms */ + i2c_write_reg(&client, 0x0a, ®, 1); + /* reset the switch */ + reg = 0x01; + i2c_write_reg(&client, 0x0d, ®, 1); + /* issue dummy command to work around firmware bug */ + i2c_read_reg(&client, 0x01, ®, 1); + + return 0; +} + +BAREBOX_CMD_START(rave_reset_switch) + .cmd = do_rave_switch_reset, + BAREBOX_CMD_DESC("reset ethernet switch on RDU2") + BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP) +BAREBOX_CMD_END |