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Wed, 12 Feb 2020 14:46:55 -0800 (PST) Date: Thu, 13 Feb 2020 00:46:53 +0200 From: Andrey Lebedev To: Maxime Ripard Subject: Re: [PATCH 1/1] Support LVDS output on Allwinner A20 Message-ID: <20200212224653.GA19494@kedthinkpad> References: <20200210195633.GA21832@kedthinkpad> <20200211072004.46tbqixn5ftilxae@gilmour.lan> <20200211204828.GA4361@kedthinkpad> <20200212125345.j6e3txfjqekuxh2s@gilmour.lan> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200212125345.j6e3txfjqekuxh2s@gilmour.lan> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200212_144657_782422_BEE92D2D X-CRM114-Status: GOOD ( 17.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: airlied@linux.ie, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, wens@csie.org, daniel@ffwll.ch, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Feb 12, 2020 at 01:53:45PM +0100, Maxime Ripard wrote: > > > Side question, this will need some DT changes too, right? > > > > Hm, I agree. I think it would be reasonable to include LVDS0/1 pins > > That, but most importantly, the reset and clocks for the LVDS > block. Also from looking at it, I'm not entirely sure that the TCON1 > has a LVDS output I also have impression that LVDS is only supported on TCON0, but that's mostly from this comment in sun4i_lvds.c: /* The LVDS encoder can only work with the TCON channel 0 */ > do you have a board when you have been able to test it? Yes, I have the hardware (Cubieboard 2) at hand, but I cannot change the any physical connections on it. FWIW, it is https://openvario.org, the device we are (painfully) trying to upgrade from old kernel-3.4 with proprietary mali drivers to contemporary software. > > and sample (but disabled) lvds panel, > > That's good for the sake of the example, but it shouldn't be in the > same patch, it won't be merged. I jave just submitted version 2 of the patches - set of 2 patches this time. Addressed your comments, please take a look. -- Andrey Lebedev aka -.- . -.. -.. . .-. Software engineer Homepage: http://lebedev.lt/ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel