+Hans Hi Tom,
On 21 January 2016 at 05:24, Tom Rini <tr...@konsulko.com> wrote: > On Wed, Jan 20, 2016 at 07:46:15PM -0700, Simon Glass wrote: >> +Mugunthan, Tom >> >> On 17 January 2016 at 03:56, Christophe Ricard >> <christophe.ric...@gmail.com> wrote: >> > Convert omap3_spi driver to DM and keep compatibility with previous >> > mode. >> > >> > Signed-off-by: Christophe Ricard <christophe-h.ric...@st.com> >> > --- >> > >> > drivers/spi/Kconfig | 6 + >> > drivers/spi/omap3_spi.c | 439 >> > ++++++++++++++++++++++++++++++++++++++++++------ >> > drivers/spi/omap3_spi.h | 14 +- >> > 3 files changed, 402 insertions(+), 57 deletions(-) >> >> This is a pretty painful conversion, with lots of #ifdefs. I think it >> would be possible to use a common pointer type and reduce this. >> >> But perhaps it does not matter - how long must we be in the state of >> supporting legacy SPI? Can we convert all TI boards to driver model? > > We _really_ need some way to support more than one board per binary > before we can move everything to DM only. > > I think we can kind of do this today if we stick to using platform data > for everything that's board-specific rather than SoC-defined. What we > talked about at ELCE was auto-generating the pdata from the device tree, > I think. We discussed this on IRC but since that doesn't exist as far as the mailing list is concerned... The current plan is: - Adjust build system to optionally build a u-boot.img in FIT format that includes the U-Boot binary and >1 device tree files - Adjust SPL to load this - Add a way for SPL to determine which device tree to select (by calling a board-specific function) - Have SPL pass this selected device tree to U-Boot when it starts Thus we should be able to support more than one board with a single U-Boot image. Of course this is not a perfect solution (e.g. it is inefficient since the DTs are likely to be largely the same) but it should be a good first step. I'm going to try this out with sunxi initially and plan to get some patches out by the end of the week. Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
