mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 22:02:02 +00:00
7d0d3fa733
Over the past ten years, new machine support was based on device tree,
and an initial set of about 400 boards using ATAGS with boardfile
for booting were grandfathered in, with about half of them either
removed or converted to DT over time.
Based on the recent mailing list discussion I started, I have now
turned the findings into a set of patches that marks most board files as
'depends on UNUSED_BOARD_FILES', leaving only 38 of the 196 boards.
For the boards that are marked as unused, there are two final chances
for potential users: The removal is scheduled to take place after the
longterm stable kernel at the end of 2022, so users can stay on that
version for another few years, and if anyone still has one of these
machines and is planning to keep updating kernels beyond that version,
they can speak up now to have their boards taken off the list again.
Waiting for the LTS release also makes sure that there will be at
least one longterm kernel that contains the recent multiplatform
conversion along while still supporting all legacy boards.
The short summary of the current status is:
- The s3c24xx, cns3xxx, iop32x and mv78xx0 platforms have no known
users and will be removed entirely.
- The mmp and davinci platforms have DT support for the important
machines and will become DT-only after this.
- s3c64xx, dove, orion5x, and pxa keep some board files to allow
those to be migrated over to DT more easily, but most board files
are getting removed now. DT support on these platforms is partially
working but requires changes to additional drivers for the other
boards.
- omap1, ep93xx, sa1100, footbridge and rpc have no DT support at
the moment but have some boards with known users. Removing the board
files that nobody uses should make it easier to try a DT conversion
if anyone cares.
There is no explicit timeline what happens with the boards that remain
after this removal, but I expect to revisit this in the future, and
with most boards gone, there will be a good time to do a treewide
review of platform drivers that never gained DT support and have no
remaining in-tree board files.
Link: https://lore.kernel.org/linux-arm-kernel/CAK8P3a0Z9vGEQbVRBo84bSyPFM-LF+hs5w8ZA51g2Z+NsdtDQA@mail.gmail.com/
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Merge tag 'arm-boardfiles-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM boardfile deprecation from Arnd Bergmann:
"Over the past ten years, new machine support was based on device tree,
and an initial set of about 400 boards using ATAGS with boardfile for
booting were grandfathered in, with about half of them either removed
or converted to DT over time.
Based on the recent mailing list discussion I started, I have now
turned the findings into a set of patches that marks most board files
as 'depends on UNUSED_BOARD_FILES', leaving only 38 of the 196 boards.
For the boards that are marked as unused, there are two final chances
for potential users: The removal is scheduled to take place after the
longterm stable kernel at the end of 2022, so users can stay on that
version for another few years, and if anyone still has one of these
machines and is planning to keep updating kernels beyond that version,
they can speak up now to have their boards taken off the list again.
Waiting for the LTS release also makes sure that there will be at
least one longterm kernel that contains the recent multiplatform
conversion along while still supporting all legacy boards.
The short summary of the current status is:
- The s3c24xx, cns3xxx, iop32x and mv78xx0 platforms have no known
users and will be removed entirely.
- The mmp and davinci platforms have DT support for the important
machines and will become DT-only after this.
- s3c64xx, dove, orion5x, and pxa keep some board files to allow
those to be migrated over to DT more easily, but most board files
are getting removed now. DT support on these platforms is partially
working but requires changes to additional drivers for the other
boards.
- omap1, ep93xx, sa1100, footbridge and rpc have no DT support at the
moment but have some boards with known users. Removing the board
files that nobody uses should make it easier to try a DT conversion
if anyone cares.
There is no explicit timeline what happens with the boards that remain
after this removal, but I expect to revisit this in the future, and
with most boards gone, there will be a good time to do a treewide
review of platform drivers that never gained DT support and have no
remaining in-tree board files"
Link: https://lore.kernel.org/linux-arm-kernel/CAK8P3a0Z9vGEQbVRBo84bSyPFM-LF+hs5w8ZA51g2Z+NsdtDQA@mail.gmail.com/
* tag 'arm-boardfiles-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: cns3xxx: add CONFIG_UNUSED_BOARD_FILES dependency
ARM: iop32x: mark as unused
ARM: s3c: mark most board files as unused
ARM: omap1: add Kconfig dependencies for unused boards
ARM: sa1100: mark most boards as unused
ARM: footbridge: mark cats board for removal
ARM: mmp: mark all board files for removal
ARM: ep93xx: mark most board files as unused
ARM: davinci: mark all ATAGS board files as unused
ARM: orion: add ATAGS dependencies
ARM: pxa: add Kconfig dependencies for ATAGS based boards
ARM: add CONFIG_UNUSED_BOARD_FILES
ARM: add ATAGS dependencies to non-DT platforms
200 lines
5.7 KiB
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200 lines
5.7 KiB
Text
# SPDX-License-Identifier: GPL-2.0
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menuconfig ARCH_DAVINCI
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bool "TI DaVinci"
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depends on ARCH_MULTI_V5
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depends on CPU_LITTLE_ENDIAN
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select DAVINCI_TIMER
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select ZONE_DMA
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select PM_GENERIC_DOMAINS if PM
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select PM_GENERIC_DOMAINS_OF if PM && OF
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select REGMAP_MMIO
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select RESET_CONTROLLER
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select PINCTRL_SINGLE
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if ARCH_DAVINCI
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config ARCH_DAVINCI_DMx
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bool
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comment "DaVinci Core Type"
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config ARCH_DAVINCI_DM355
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bool "DaVinci 355 based system"
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depends on ATAGS && UNUSED_BOARD_FILES
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select DAVINCI_AINTC
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select ARCH_DAVINCI_DMx
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config ARCH_DAVINCI_DA830
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bool "DA830/OMAP-L137/AM17x based system"
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depends on !ARCH_DAVINCI_DMx || (AUTO_ZRELADDR && ARM_PATCH_PHYS_VIRT)
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depends on ATAGS
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select ARCH_DAVINCI_DA8XX
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# needed on silicon revs 1.0, 1.1:
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select CPU_DCACHE_WRITETHROUGH if !CPU_DCACHE_DISABLE
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select DAVINCI_CP_INTC
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config ARCH_DAVINCI_DA850
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bool "DA850/OMAP-L138/AM18x based system"
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depends on !ARCH_DAVINCI_DMx || (AUTO_ZRELADDR && ARM_PATCH_PHYS_VIRT)
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depends on ATAGS
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select ARCH_DAVINCI_DA8XX
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select DAVINCI_CP_INTC
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config ARCH_DAVINCI_DA8XX
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bool
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config ARCH_DAVINCI_DM365
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bool "DaVinci 365 based system"
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depends on ATAGS && UNUSED_BOARD_FILES
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select DAVINCI_AINTC
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select ARCH_DAVINCI_DMx
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comment "DaVinci Board Type"
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config MACH_DA8XX_DT
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bool "Support DA8XX platforms using device tree"
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default y
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depends on ARCH_DAVINCI_DA850
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select PINCTRL
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help
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Say y here to include support for TI DaVinci DA850 based using
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Flattened Device Tree. More information at Documentation/devicetree
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config MACH_DAVINCI_DM355_EVM
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bool "TI DM355 EVM"
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default ARCH_DAVINCI_DM355
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depends on ARCH_DAVINCI_DM355
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help
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Configure this option to specify the whether the board used
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for development is a DM355 EVM
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config MACH_DM355_LEOPARD
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bool "DM355 Leopard board"
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depends on ARCH_DAVINCI_DM355
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help
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Configure this option to specify the whether the board used
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for development is a DM355 Leopard board.
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config MACH_DAVINCI_DM365_EVM
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bool "TI DM365 EVM"
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default ARCH_DAVINCI_DM365
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depends on ARCH_DAVINCI_DM365
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help
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Configure this option to specify whether the board used
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for development is a DM365 EVM
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config MACH_DAVINCI_DA830_EVM
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bool "TI DA830/OMAP-L137/AM17x Reference Platform"
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default ARCH_DAVINCI_DA830
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depends on ATAGS && UNUSED_BOARD_FILES
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depends on ARCH_DAVINCI_DA830
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select GPIO_PCF857X if I2C
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help
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Say Y here to select the TI DA830/OMAP-L137/AM17x Evaluation Module.
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choice
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prompt "Select DA830/OMAP-L137/AM17x UI board peripheral"
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depends on MACH_DAVINCI_DA830_EVM
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help
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The presence of UI card on the DA830/OMAP-L137/AM17x EVM is
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detected automatically based on successful probe of the I2C
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based GPIO expander on that board. This option selected in this
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menu has an effect only in case of a successful UI card detection.
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config DA830_UI_LCD
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bool "LCD"
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help
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Say Y here to use the LCD as a framebuffer or simple character
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display.
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config DA830_UI_NAND
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bool "NAND flash"
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help
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Say Y here to use the NAND flash. Do not forget to setup
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the switch correctly.
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endchoice
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config MACH_DAVINCI_DA850_EVM
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bool "TI DA850/OMAP-L138/AM18x Reference Platform"
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depends on ATAGS && UNUSED_BOARD_FILES
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default ARCH_DAVINCI_DA850
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depends on ARCH_DAVINCI_DA850
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help
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Say Y here to select the TI DA850/OMAP-L138/AM18x Evaluation Module.
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choice
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prompt "Select peripherals connected to expander on UI board"
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depends on MACH_DAVINCI_DA850_EVM
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help
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The presence of User Interface (UI) card on the DA850/OMAP-L138/AM18x
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EVM is detected automatically based on successful probe of the I2C
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based GPIO expander on that card. This option selected in this
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menu has an effect only in case of a successful UI card detection.
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config DA850_UI_NONE
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bool "No peripheral is enabled"
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help
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Say Y if you do not want to enable any of the peripherals connected
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to TCA6416 expander on DA850/OMAP-L138/AM18x EVM UI card
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config DA850_UI_RMII
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bool "RMII Ethernet PHY"
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help
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Say Y if you want to use the RMII PHY on the DA850/OMAP-L138/AM18x
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EVM. This PHY is found on the UI daughter card that is supplied with
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the EVM.
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NOTE: Please take care while choosing this option, MII PHY will
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not be functional if RMII mode is selected.
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config DA850_UI_SD_VIDEO_PORT
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bool "Video Port Interface"
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help
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Say Y if you want to use Video Port Interface (VPIF) on the
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DA850/OMAP-L138 EVM. The Video decoders/encoders are found on the
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UI daughter card that is supplied with the EVM.
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endchoice
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config MACH_MITYOMAPL138
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bool "Critical Link MityDSP-L138/MityARM-1808 SoM"
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depends on ARCH_DAVINCI_DA850
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depends on ATAGS && UNUSED_BOARD_FILES
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help
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Say Y here to select the Critical Link MityDSP-L138/MityARM-1808
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System on Module. Information on this SoM may be found at
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https://www.mitydsp.com
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config MACH_OMAPL138_HAWKBOARD
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bool "TI AM1808 / OMAPL-138 Hawkboard platform"
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depends on ARCH_DAVINCI_DA850
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depends on ATAGS && UNUSED_BOARD_FILES
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help
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Say Y here to select the TI AM1808 / OMAPL-138 Hawkboard platform .
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config DAVINCI_MUX
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bool "DAVINCI multiplexing support"
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depends on ARCH_DAVINCI
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default y
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help
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Pin multiplexing support for DAVINCI boards. If your bootloader
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sets the multiplexing correctly, say N. Otherwise, or if unsure,
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say Y.
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config DAVINCI_MUX_DEBUG
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bool "Multiplexing debug output"
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depends on DAVINCI_MUX
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help
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Makes the multiplexing functions print out a lot of debug info.
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This is useful if you want to find out the correct values of the
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multiplexing registers.
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config DAVINCI_MUX_WARNINGS
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bool "Warn about pins the bootloader didn't set up"
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depends on DAVINCI_MUX
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help
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Choose Y here to warn whenever driver initialization logic needs
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to change the pin multiplexing setup. When there are no warnings
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printed, it's safe to deselect DAVINCI_MUX for your product.
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endif
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