| menu "DMA support" |
| |
| config SH_DMA_API |
| bool |
| |
| config SH_DMA |
| bool "SuperH on-chip DMA controller (DMAC) support" |
| depends on CPU_SH3 || CPU_SH4 |
| select SH_DMA_API |
| default n |
| |
| config NR_ONCHIP_DMA_CHANNELS |
| int |
| depends on SH_DMA |
| default "8" if CPU_SUBTYPE_SH7750R || CPU_SUBTYPE_SH7751R |
| default "12" if CPU_SUBTYPE_SH7780 |
| default "4" |
| help |
| This allows you to specify the number of channels that the on-chip |
| DMAC supports. This will be 4 for SH7750/SH7751 and 8 for the |
| SH7750R/SH7751R. |
| |
| config NR_DMA_CHANNELS_BOOL |
| depends on SH_DMA |
| bool "Override default number of maximum DMA channels" |
| help |
| This allows you to forcibly update the maximum number of supported |
| DMA channels for a given board. If this is unset, this will default |
| to the number of channels that the on-chip DMAC has. |
| |
| config NR_DMA_CHANNELS |
| int "Maximum number of DMA channels" |
| depends on SH_DMA && NR_DMA_CHANNELS_BOOL |
| default NR_ONCHIP_DMA_CHANNELS |
| help |
| This allows you to specify the maximum number of DMA channels to |
| support. Setting this to a higher value allows for cascading DMACs |
| with additional channels. |
| |
| config SH_DMABRG |
| bool "SH7760 DMABRG support" |
| depends on CPU_SUBTYPE_SH7760 |
| help |
| The DMABRG does data transfers from main memory to Audio/USB units |
| of the SH7760. |
| Say Y if you want to use Audio/USB DMA on your SH7760 board. |
| |
| endmenu |
