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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 00:26:41 +07:00
7d71d5b2e8
the setup before the change was - arch/powerpc/Kconfig had the PPC_CLOCK option, off by default - depending on the PPC_CLOCK option the arch/powerpc/kernel/clock.c file was built, which implements the clk.h API but always returns -ENOSYS unless a platform registers specific callbacks - the MPC52xx platform selected PPC_CLOCK but did not register any callbacks, thus all clk.h API calls keep resulting in -ENOSYS errors (which is OK, all peripheral drivers deal with the situation) - the MPC512x platform selected PPC_CLOCK and registered specific callbacks implemented in arch/powerpc/platforms/512x/clock.c, thus provided real support for the clock API - no other powerpc platform did select PPC_CLOCK the situation after the change is - the MPC512x platform implements the COMMON_CLK interface, and thus the PPC_CLOCK approach in arch/powerpc/platforms/512x/clock.c has become obsolete - the MPC52xx platform still lacks genuine support for the clk.h API while this is not a change against the previous situation (the error code returned from COMMON_CLK stubs differs but every call still results in an error) - with all references gone, the arch/powerpc/kernel/clock.c wrapper and the PPC_CLOCK option have become obsolete, as did the clk_interface.h header file the switch from PPC_CLOCK to COMMON_CLK is done for all platforms within the same commit such that multiplatform kernels (the combination of 512x and 52xx within one executable) keep working Cc: Mike Turquette <mturquette@linaro.org> Cc: Anatolij Gustschin <agust@denx.de> Cc: linux-arm-kernel@lists.infradead.org Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de>
62 lines
1.7 KiB
Plaintext
62 lines
1.7 KiB
Plaintext
config PPC_MPC52xx
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bool "52xx-based boards"
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depends on 6xx
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select COMMON_CLK
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select PPC_PCI_CHOICE
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config PPC_MPC5200_SIMPLE
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bool "Generic support for simple MPC5200 based boards"
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depends on PPC_MPC52xx
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select DEFAULT_UIMAGE
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help
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This option enables support for a simple MPC52xx based boards which
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do not need a custom platform specific setup. Such boards are
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supported assuming the following:
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- GPIO pins are configured by the firmware,
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- CDM configuration (clocking) is setup correctly by firmware,
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- if the 'fsl,has-wdt' property is present in one of the
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gpt nodes, then it is safe to use such gpt to reset the board,
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- PCI is supported if enabled in the kernel configuration
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and if there is a PCI bus node defined in the device tree.
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Boards that are compatible with this generic platform support
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are:
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intercontrol,digsy-mtc
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phytec,pcm030
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phytec,pcm032
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promess,motionpro
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schindler,cm5200
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tqc,tqm5200
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config PPC_EFIKA
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bool "bPlan Efika 5k2. MPC5200B based computer"
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depends on PPC_MPC52xx
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select PPC_RTAS
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select RTAS_PROC
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select PPC_NATIVE
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config PPC_LITE5200
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bool "Freescale Lite5200 Eval Board"
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depends on PPC_MPC52xx
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select DEFAULT_UIMAGE
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config PPC_MEDIA5200
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bool "Freescale Media5200 Eval Board"
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depends on PPC_MPC52xx
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select DEFAULT_UIMAGE
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config PPC_MPC5200_BUGFIX
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bool "MPC5200 (L25R) bugfix support"
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depends on PPC_MPC52xx
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help
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Enable workarounds for original MPC5200 errata. This is not required
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for MPC5200B based boards.
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It is safe to say 'Y' here
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config PPC_MPC5200_LPBFIFO
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tristate "MPC5200 LocalPlus bus FIFO driver"
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depends on PPC_MPC52xx && PPC_BESTCOMM
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select PPC_BESTCOMM_GEN_BD
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