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| author | steven miao <realmz6@gmail.com> | 2010-10-22 08:48:41 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-03-18 03:49:23 -0400 |
| commit | 55835175a03392d2e4d9bff9d482312d118f304e (patch) | |
| tree | 51157bc604b5c5baa917bd22f420fa6291d5da76 /arch/blackfin/mach-bf548/Kconfig | |
| parent | 6ce0466d631d40662e2ab9ec5a05019482bd1074 (diff) | |
| download | op-kernel-dev-55835175a03392d2e4d9bff9d482312d118f304e.zip op-kernel-dev-55835175a03392d2e4d9bff9d482312d118f304e.tar.gz | |
Blackfin: bf54x: add kconfig for UART2/3 DMA channel assignments
The BF54x lacks dedicated DMA channels for the UART peripherals and need
to be muxed between others. So add a kconfig option so people can select
which channels the UARTs will use so they can pick between SPORTs and the
less commonly used EPPI/PIXC peripherals.
Signed-off-by: steven miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/mach-bf548/Kconfig')
| -rw-r--r-- | arch/blackfin/mach-bf548/Kconfig | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf548/Kconfig b/arch/blackfin/mach-bf548/Kconfig index 70189a0..94acb58 100644 --- a/arch/blackfin/mach-bf548/Kconfig +++ b/arch/blackfin/mach-bf548/Kconfig @@ -42,6 +42,65 @@ config BF548_ATAPI_ALTERNATIVE_PORT async address or GPIO port F and G. Select y to route it to GPIO. +choice + prompt "UART2 DMA channel selection" + depends on SERIAL_BFIN_UART2 + default UART2_DMA_RX_ON_DMA18 + help + UART2 DMA channel selection + RX -> DMA18 + TX -> DMA19 + or + RX -> DMA13 + TX -> DMA14 + +config UART2_DMA_RX_ON_DMA18 + bool "UART2 DMA RX -> DMA18 TX -> DMA19" + help + UART2 DMA channel assignment + RX -> DMA18 + TX -> DMA19 + use SPORT2 default DMA channel + +config UART2_DMA_RX_ON_DMA13 + bool "UART2 DMA RX -> DMA13 TX -> DMA14" + help + UART2 DMA channel assignment + RX -> DMA13 + TX -> DMA14 + use EPPI1 EPPI2 default DMA channel +endchoice + +choice + prompt "UART3 DMA channel selection" + depends on SERIAL_BFIN_UART3 + default UART3_DMA_RX_ON_DMA20 + help + UART3 DMA channel selection + RX -> DMA20 + TX -> DMA21 + or + RX -> DMA15 + TX -> DMA16 + +config UART3_DMA_RX_ON_DMA20 + bool "UART3 DMA RX -> DMA20 TX -> DMA21" + help + UART3 DMA channel assignment + RX -> DMA20 + TX -> DMA21 + use SPORT3 default DMA channel + +config UART3_DMA_RX_ON_DMA15 + bool "UART3 DMA RX -> DMA15 TX -> DMA16" + help + UART3 DMA channel assignment + RX -> DMA15 + TX -> DMA16 + use PIXC default DMA channel + +endchoice + comment "Interrupt Priority Assignment" menu "Priority" |
