On Tuesday 30 June 2015 14:27:28 Paul Osmialowski wrote: > Note that <mach/memory.h> is needed (which is denoted by > CONFIG_NEED_MACH_MEMORY_H) as it provides macros required for proper > operation of DMA allocation functions. You can't do this, it breaks compilation when multiple platforms are enabled. > Signed-off-by: Paul Osmialowski <pawelo@xxxxxxxxxxx> > --- > arch/arm/Kconfig | 4 ++ > arch/arm/boot/dts/kinetis.dtsi | 34 ++++++++++++++++ > arch/arm/mach-kinetis/include/mach/memory.h | 61 +++++++++++++++++++++++++++++ > 3 files changed, 99 insertions(+) > create mode 100644 arch/arm/mach-kinetis/include/mach/memory.h > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index b21592b..8ccffee 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -971,6 +971,10 @@ config ARCH_KINETIS > select CLKSRC_KINETIS > select PINCTRL > select PINCTRL_KINETIS > + select DMADEVICES > + select FSL_EDMA > + select DMA_OF > + select NEED_MACH_MEMORY_H I think DMA_OF is implied by dmaengine support in combination with CONFIG_OF > + > +#ifndef _MACH_KINETIS_MEMORY_H > +#define _MACH_KINETIS_MEMORY_H > + > +#ifndef __ASSEMBLY__ > + > +/* > + * On Kinetis K70, consistent DMA memory resides in a special > + * DDRAM alias region (non-cacheable DDRAM at 0x80000000). > + * > + */ > +#define KINETIS_PHYS_DMA_OFFSET UL(0x80000000) > + > +/* > + * Mask of the field used to distinguish DDRAM aliases > + */ > +#define KINETIS_DRAM_ALIAS_MASK UL(0xf8000000) This should be expressed using the 'dma-ranges' properties in the bus nodes above any DMA master, the normal DMA mapping code will then do the right thing. Arnd -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
