On 5/23/19 4:50 PM, Tom Rini wrote: > On Thu, May 23, 2019 at 04:47:59PM +0200, Michael Nazzareno Trimarchi wrote: >> Hi >> >> On Thu, May 23, 2019 at 4:33 PM Tom Rini <tr...@konsulko.com> wrote: >>> >>> On Thu, May 23, 2019 at 02:08:23PM +0000, Abel Vesa wrote: >>>> On 19-05-23 09:59:05, Tom Rini wrote: >>>>> On Thu, May 23, 2019 at 10:49:11AM -0300, Fabio Estevam wrote: >>>>>> Hi Peng, >>>>>> >>>>>> On Tue, May 21, 2019 at 10:38 PM Peng Fan <peng....@nxp.com> wrote: >>>>>> >>>>>>>> I will send a v2 removing CONFIG_SPL_DM. >>>>>>> >>>>>>> So what is the real direction moving to use SPL driver, non-dm is >>>>>>> allowed in future? >>>>>> >>>>>> We are very limited in space when CONFIG_SPL_DM is used on imx6q-sabresd. >>>>>> >>>>>> With CONFIG_SPL_DM selected the size increase due to the three dtb's >>>>>> is about 8kB. >>>>>> >>>>>> Even with CONFIG_SPL_DM disabled we ony have 1kB of free space, so I >>>>>> still want to optimize the size further. >>>>> >>>>> So with CONFIG_SPL_DM we're overflowing by ~7kB? >>>> >>>> Well, the mandatory requirements here are as follow (AFAIK): >>>> 1. keep one binary for all imx6dl imx6[qp|dl|q]-sabresd >>>> 2. have DM support in SPL >>>> >>>> So I guess we have to either prioritize the other needed configs and >>>> leave out the one we can do without. That, ofcourse, if we still want >>>> to fit in and we still want one binary for all three sabresd boards. >>> >>> Well, no, you don't have to use DM in SPL. But what I'm wondering is if >>> we need qp/dl/q specific information at the SPL stage or if that can >>> wait until we're doing the real U-Boot. >> >> Is dcd table take space? > > The DCD table is included in that hard size limit, but yes, if there's > QP/DL/Q specific stuff that we could handle via the plugin mechanism or > similar, that might be part of the solution.
You do need Q/DL/S specific stuff in SPL for e.g. pinmux . And you want to minimize the DCD table and move all that logic into SPL, since the DCD is rather limited. -- Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
