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https://github.com/AsahiLinux/u-boot
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927c1fa266
On some SoCs, DMA-capable peripherals see a different address space to the CPU's physical address space. Create an API to allow platform-agnostic drivers to convert between the two address spaces when programming DMA operations. This API will exist on all platforms, but will have a dummy implementation when this feature is not required. Other platforms will enable CONFIG_PHYS_TO_BUS and provide the required implementation. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
63 lines
1.1 KiB
Text
63 lines
1.1 KiB
Text
menu "Device Drivers"
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source "drivers/core/Kconfig"
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source "drivers/demo/Kconfig"
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source "drivers/pci/Kconfig"
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source "drivers/pcmcia/Kconfig"
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source "drivers/mtd/Kconfig"
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source "drivers/block/Kconfig"
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source "drivers/misc/Kconfig"
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source "drivers/net/Kconfig"
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source "drivers/input/Kconfig"
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source "drivers/serial/Kconfig"
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source "drivers/tpm/Kconfig"
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source "drivers/i2c/Kconfig"
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source "drivers/spi/Kconfig"
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source "drivers/gpio/Kconfig"
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source "drivers/power/Kconfig"
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source "drivers/hwmon/Kconfig"
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source "drivers/watchdog/Kconfig"
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source "drivers/video/Kconfig"
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source "drivers/sound/Kconfig"
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source "drivers/usb/Kconfig"
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source "drivers/dfu/Kconfig"
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source "drivers/mmc/Kconfig"
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source "drivers/rtc/Kconfig"
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source "drivers/dma/Kconfig"
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source "drivers/crypto/Kconfig"
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source "drivers/thermal/Kconfig"
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endmenu
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config PHYS_TO_BUS
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bool
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help
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Some SoCs use a different address map for CPU physical addresses and
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peripheral DMA master accesses. If yours does, select this option in
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your platform's Kconfig, and implement the appropriate mapping
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functions in your platform's support code.
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