From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gXKmF-0002LR-S2 for barebox@lists.infradead.org; Thu, 13 Dec 2018 06:47:21 +0000 Date: Thu, 13 Dec 2018 07:47:07 +0100 From: Sascha Hauer Message-ID: <20181213064707.termfqcixpsnhdal@pengutronix.de> References: <20181210133814.29219-1-l.stach@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20181210133814.29219-1-l.stach@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH] ARM: rdu2: add command to reset network switch To: Lucas Stach Cc: barebox@lists.infradead.org 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 > --- 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 > +#include > +#include > + > +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 > > > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox