From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Burton Date: Thu, 26 May 2016 14:55:24 +0100 Subject: [U-Boot] [PATCH] serial: 16550: Add JZ47xx support In-Reply-To: <5746E673.7080108@denx.de> References: <1464135571-7113-1-git-send-email-marex@denx.de> <5746247F.9010600@gmail.com> <57462563.4040606@denx.de> <20160526114617.GA26283@NP-P-BURTON> <5746E673.7080108@denx.de> Message-ID: <20160526135524.GC26789@NP-P-BURTON> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Thu, May 26, 2016 at 02:05:07PM +0200, Marek Vasut wrote: > > Interesting :) May I ask which platform/SoC you're working with? Have > > you seen the (unfortunately currently out of tree) port we did for the > > JZ4780-based Ci20? I recall the pain of squeezing SPL down to a small > > enough size well... > > I bought the CI20, yeah. I started with that tree and am now getting it > into mainline shape. I actually managed to optimize the SPL, so it does > not overflow. One of the things which helped a lot was removing slop[1] > from the structures and using appropriate data types in them (like don't > use u32 to store an 8bit number). I also tinified the MMC stack, so that > it won't pull in too much useless code. > > At this point, I have a u-boot running from SD card and the SD driver in > full U-Boot is already probing from DT and using DM. I sent Daniel the > updated patches, but they are still work in progress. Nonetheless, if > you want me forward that to you as well, let me know. > > I plan to get this CI20 submitted at some point this or next week, so it > can land in 2016.07 (I hope!) and then debian and fedora-mips (and other > distros) can pick it up and package proper. That's how I see it. That sounds great :) I'd be interested in seeing them but probably won't have any time to look at them for a few weeks anyway (busy with other work things & then getting married & going off on honeymoon!). So hopefully by the time I'd get round to having a look they'll be in mainline :) > btw. what is the linux support status of the ci20 ? Is anyone working > on that? I saw the DTS in Linux, but it's pretty bare-bones. Yeah the support in mainline Linux is a bit basic at the moment. The biggest holdup is pinctrl support which I need to do some work on - the DT bindings are more complicated than they need to be, and the driver should probably be made more generic to cover other Ingenic SoCs before it goes into mainline. > btw2. can I get the ci40 anywhere or is that just unobtainium board ? I'll email you separately about that. Thanks, Paul