From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VJIgh-0003hu-RM for barebox@lists.infradead.org; Tue, 10 Sep 2013 07:48:41 +0000 Date: Tue, 10 Sep 2013 09:48:16 +0200 From: Sascha Hauer Message-ID: <20130910074816.GE30088@pengutronix.de> References: <1378738482-15488-1-git-send-email-s.hauer@pengutronix.de> <522DF740.9050503@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <522DF740.9050503@gmail.com> 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] gpio: Add designware gpio controller support To: Sebastian Hesselbarth Cc: barebox@lists.infradead.org On Mon, Sep 09, 2013 at 06:28:48PM +0200, Sebastian Hesselbarth wrote: > I have seen this driver and think it can be improved by exploiting > its config1/2 registers where synthesis settings are stored. Please > also look at [1] pp.1229; you can read out number of ports, port > width, interrupt, and debounce features. Ok, the port width feature is easy enough to implement. Will add it in the next version. I also added a check for multiple ports, but just ignore the additional ports for now since I don't know the register offsets and also have no hardware to actually test it (The SoCFPGA only has one port) > > Unfortunately, I am not ready to run barebox on Armada 1500 and I > don't have a socfpga to test. So if you are not eager to modify it now, > I can add config reg based read-out later. > > [1] http://www.altera.com/literature/hb/arria-v/hps.pdf > > [...] > >+static __maybe_unused struct of_device_id dwgpio_match[] = { > >+ { > >+ .compatible = "snps,dw-gpio", > >+ }, { > > Please add "snps,dw-apb-gpio", that's what the linux driver > will look for if make to pick it up for Armada 1500. I'll better just change it to "snps,dw-apb-gpio". There already is a dtsi file in the kernel which uses this binding (although it looks like it hasn't been approved by anyone) Sascha -- 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