From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peng Fan Date: Thu, 10 Mar 2016 09:29:00 +0800 Subject: [U-Boot] [PATCH 2/3] imx: mx6ul_evk: default enable device tree support In-Reply-To: References: <1457503307-3266-1-git-send-email-van.freenix@gmail.com> <1457503307-3266-3-git-send-email-van.freenix@gmail.com> Message-ID: <20160310012858.GA29787@linux-7smt.suse> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Fabio, On Wed, Mar 09, 2016 at 08:48:40AM -0300, Fabio Estevam wrote: >Hi Peng, > >On Wed, Mar 9, 2016 at 3:01 AM, Peng Fan wrote: >> Default enable device tree for mx6ul_14x14_evk and >> mx6ul_9x9_evk board. And sort the defconfig file to be in >> alphabet order. >> >> Enable pinctrl driver for the two boards. >> >> Signed-off-by: Peng Fan >> Cc: Stefano Babic >> Cc: Fabio Estevam > >Shouldn't board/freescale/mx6ul_14x14_evk/README be updated to take >into account the new new method for flashing the image? Will update u-boot.img to u-boot-dtb.img. Wait for more comments on the patch set and will address this in V3. Actually I am not very sure whether we need to introduce a full device tree in U-Boot or not. It's too large a file, such as dtsi/clock header/pin header. I just have an idea to introudce only needed part. Also I do not have plan to implement a DM clk driver for i.MX, since it's not easy to do clk management like linux kernel. If follow kernel, and add all the gates/muxes, it's too complicated a driver, and not easy for us to do bringup work. So I am thinking whether need to discard the clk related property in device tree. Thanks, Peng.