From: Sascha Hauer <s.hauer@pengutronix.de>
To: Lucas Stach <l.stach@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH] ARM: rdu2: add command to reset network switch
Date: Thu, 13 Dec 2018 07:47:07 +0100 [thread overview]
Message-ID: <20181213064707.termfqcixpsnhdal@pengutronix.de> (raw)
In-Reply-To: <20181210133814.29219-1-l.stach@pengutronix.de>
On Mon, Dec 10, 2018 at 02:38:14PM +0100, Lucas Stach wrote:
> 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>
> ---
Applied, thanks
Sascha
> arch/arm/boards/zii-imx6q-rdu2/Makefile | 2 +-
> arch/arm/boards/zii-imx6q-rdu2/switch-cmd.c | 49 +++++++++++++++++++++
> 2 files changed, 50 insertions(+), 1 deletion(-)
> create mode 100644 arch/arm/boards/zii-imx6q-rdu2/switch-cmd.c
>
> diff --git a/arch/arm/boards/zii-imx6q-rdu2/Makefile b/arch/arm/boards/zii-imx6q-rdu2/Makefile
> index c6285362f2ee..10dfba3a3cf3 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 000000000000..bdba46fb3615
> --- /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
> --
> 2.19.1
>
>
> _______________________________________________
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>
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prev parent reply other threads:[~2018-12-13 6:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-10 13:38 Lucas Stach
2018-12-13 6:47 ` Sascha Hauer [this message]
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