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Kconfig: Migrate BOUNCE_BUFFER

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The bounce buffer is used by a few drivers (most of the MMC drivers)
to overcome limitations in their respective DMA implementation.

This moves the configuration to Kconfig and makes it user-selectable
(even though it will be a required feature to make those drivers
work): the expected usage is for drivers depending on this to 'select'
it unconditionally from their respective Kconfig (see follow-up
patches).

This commit includes a full migration using moveconfig.py to ensure
that each commit compiles.  To ensure bisectability we update
dependencies of various drivers to now select BOUNCE_BUFFER when needed.

[trini: Squash all patches to ensure bisectability]
Signed-off-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Otavio Salvador <otavio@ossystems.com.br> [dw_mmc portion]
Reviewed-by: Fabio Estevam <festevam@gmail.com> [mxsmmc portion]
Reviewed-by: Simon Glass <sjg@chromium.org> [tegra portion]
This commit is contained in:
Philipp Tomsich
2018-11-30 22:13:25 +01:00
committed by Tom Rini
parent 599fb3bc95
commit 2acc24fc28
144 changed files with 132 additions and 67 deletions
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configs/pico-imx7d_defconfig
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@@ -16,6 +16,7 @@ CONFIG_NR_DRAM_BANKS=1
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/spl_sd.cfg"
CONFIG_BOOTCOMMAND="run findfdt; run finduuid; run distro_bootcmd"
CONFIG_DEFAULT_FDT_FILE="ask"
CONFIG_BOUNCE_BUFFER=y
CONFIG_SPL_I2C_SUPPORT=y
CONFIG_SPL_USB_HOST_SUPPORT=y
CONFIG_SPL_USB_GADGET=y