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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>
37 lines
933 B
Plaintext
37 lines
933 B
Plaintext
config PPC_MPC512x
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bool "512x-based boards"
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depends on 6xx
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select COMMON_CLK
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select FSL_SOC
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select IPIC
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select PPC_PCI_CHOICE
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select FSL_PCI if PCI
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select ARCH_WANT_OPTIONAL_GPIOLIB
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select USB_EHCI_BIG_ENDIAN_MMIO
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select USB_EHCI_BIG_ENDIAN_DESC
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config MPC5121_ADS
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bool "Freescale MPC5121E ADS"
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depends on PPC_MPC512x
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select DEFAULT_UIMAGE
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help
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This option enables support for the MPC5121E ADS board.
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config MPC512x_GENERIC
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bool "Generic support for simple MPC512x based boards"
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depends on PPC_MPC512x
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select DEFAULT_UIMAGE
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help
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This option enables support for simple MPC512x based boards
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which do not need custom platform specific setup.
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Compatible boards include: Protonic LVT base boards (ZANMCU
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and VICVT2), Freescale MPC5125 Tower system.
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config PDM360NG
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bool "ifm PDM360NG board"
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depends on PPC_MPC512x
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select DEFAULT_UIMAGE
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help
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This option enables support for the PDM360NG board.
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