[U-Boot] [PATCH v2 4/4] spi: Convert CONFIG_DM_SPI* to CONFIG_$(SPL_TPL_)DM_SPI*

[Tom Rini <trini@konsulko.com>]

On Fri, Aug 23, 2019 at 11:02:27PM +0200, Lukasz Majewski wrote:
> Hi Tom,
> 
> > On Tue, Aug 13, 2019 at 03:47:31PM +0200, Lukasz Majewski wrote:
> > > This change allows more fine tuning of driver model based SPI
> > > support in SPL and TPL. It is now possible to explicitly
> > > enable/disable the DM_SPI support in SPL and TPL via Kconfig option.
> > > 
> > > Before this change it was necessary to use:
> > >     /* SPI Flash Configs */
> > >     #if defined(CONFIG_SPL_BUILD)
> > >     #undef CONFIG_DM_SPI
> > >     #undef CONFIG_DM_SPI_FLASH
> > >     #undef CONFIG_SPI_FLASH_MTD
> > >     #endif
> > > 
> > > in the ./include/configs/<board>.h, which is error prone and shall
> > > be avoided when we strive to switch to Kconfig.
> > > 
> > > The goal of this patch:
> > > 
> > > Provide distinction for DM_SPI support in both U-Boot proper and
> > > SPL (TPL). Valid use case is when U-Boot proper wants to use
> > > DM_SPI, but SPL must still support non DM driver.
> > > 
> > > Another use case is the conversion of non DM/DTS SPI driver to
> > > support DM/DTS. When such driver needs to work in both SPL and
> > > U-Boot proper, the distinction is needed in Kconfig (also if SPL
> > > version of the driver supports OF_PLATDATA).
> > > 
> > > In the end of the day one would have to support following use cases
> > > (in single driver file - e.g. mxs_spi.c):
> > > 
> > > - U-Boot proper driver supporting DT/DTS
> > > - U-Boot proper driver without DT/DTS support (deprecated)
> > > - SPL driver without DT/DTS support
> > > - SPL (and TPL) driver with DT/DTS (when the SoC has enough
> > > resources to run full blown DT/DTS)
> > > - SPL driver with DT/DTS and SPL_OF_PLATDATA (when one have
> > > constrained environment with no fitImage and OF_LIBFDT support).
> > > 
> > > Some boards do require SPI support (with DM) in SPL (TPL) and some
> > > only have DM_SPI{_FLASH} defined to allow compiling SPL.
> > > 
> > > This patch converts #ifdef CONFIG_DM_SPI* to #if
> > > CONFIG_IS_ENABLED(DM_SPI) and provides corresponding defines in
> > > Kconfig.
> > > 
> > > Signed-off-by: Lukasz Majewski <lukma@denx.de>
> > > Tested-by: Adam Ford <aford173@gmail.com> #da850-evm  
> > 
> > Sorry I didn't bisect down to which part of the series is doing this,
> > but I see problems with:
> > ls1046ardb_sdcard ls1046ardb_qspi_spl ls1043ardb_nand ls1046aqds_tfa
> > ls1046aq ds_nand ls1046ardb_qspi ls1046aqds_sdcard_ifc
> > ls1046aqds_SECURE_BOOT ls1046aqds_sdcard_qspi ls1 046aqds_qspi
> > ls1043ardb_sdcard ls1043aqds_sdcard_ifc ls1046ardb_tfa
> > ls1046ardb_tfa_SECURE_BOOT ls1043aqds_nand ls1046aqds_lpuart
> > ls1046ardb_emmc ls1046aqds_tfa_SECURE_BOOT ls1046afrwy_tfa ls 1046aqds
> > ls1043ardb_nand_SECURE_BOOT ls1046ardb_qspi_SECURE_BOOT
> > ls1043aqds_sdcard_qspi
> > 
> > Some of which are dependency problems about SPL/SPL_DM.  I also see:
> >    aarch64: (for 225/225 boards) all -294.2 bss -0.0 data -11.7
> > rodata -72.5 spl/u-boot-spl:all -0.3 spl/u-boot-spl:text -0.3 text
> > -210.0 [snip] ls1043ardb_nand: all -9435 data -376 rodata -2331 text
> > -6728 ls1043ardb_sdcard: all -9435 data -376 rodata -2331 text -6728
> >             ls1043aqds_sdcard_ifc: all -9435 data -376 rodata -2331
> > text -6728 ls1043aqds_nand: all -9435 data -376 rodata -2331 text
> > -6728 ls1043ardb_nand_SECURE_BOOT: all -9435 data -376 rodata -2331
> > text -6728 ls1043ardb_sdcard_SECURE_BOOT: all -9435 data -376 rodata
> > -2331 text -6728 ls1043aqds_sdcard_qspi: all -9436 bss -8 data -376
> > rodata -2324 text -6728
> > 
> > which I think means a few conversions weren't right.
> 
> It looks like some parts of the SPL are not build ....

Yes, there's some dependency problem Kconfig is spotting related to
SPL/SPL_DM.

> Is the delta of size available from travis-CI or from any other script
> (maybe there is some buildman switch)?

Yes, it's part of buildman.  I do:
$ export SOURCE_DATE_EPOCH=`date +%s`
$ ./tools/buildman/buildman -o  /tmp/test --step 0 -b origin/master.. --force-build -CveE
$ ./tools/buildman/buildman -o  /tmp/test --step 0 -b origin/master.. -Ssdel

to get size changes between point A and point Z in a branch, and omit
--step 0 when I need to see which patch in between them caused the size
change.

-- 
Tom
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