2adcf194cb
Some peripherals might generate an error interrupt shortly after the data interrupt due to the fact that the peripheral isn't serviced fast enough. In most cases this isn't a problem and is expected behavior. This hasn't been a problem on most parts since you simply don't request the error interrupt (or you leave it disabled while there is an expected state) and do the peripheral status checking in the data interrupt. The Blackfin SIC allows people to prioritize data and error interrupts, and the Blackfin CEC allows interrupts of equal or higher priority to nest. The current default settings gives error interrupts a higher priority than data interrupts. So if an error occurs while processing the data interrupt, it will be serviced immediately. However, the error interrupt on the BF537 SIC cannot be enabled on a per-peripheral basis. Once the error interrupt is enabled for one peripheral, it is automatically enabled for all peripherals. Therefore lower the default multiplexed error interrupt priority so most people need not worry themselves with this issue. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
118 lines
2.0 KiB
Plaintext
118 lines
2.0 KiB
Plaintext
if (BF537 || BF534 || BF536)
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source "arch/blackfin/mach-bf537/boards/Kconfig"
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menu "BF537 Specific Configuration"
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comment "Interrupt Priority Assignment"
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menu "Priority"
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config IRQ_PLL_WAKEUP
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int "IRQ_PLL_WAKEUP"
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default 7
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config IRQ_DMA_ERROR
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int "IRQ_DMA_ERROR Generic"
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default 7
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config IRQ_ERROR
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int "IRQ_ERROR: PPI CAN MAC SPORT0 SPORT1 SPI UART0 UART1"
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default 11
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config IRQ_RTC
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int "IRQ_RTC"
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default 8
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config IRQ_PPI
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int "IRQ_PPI"
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default 8
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config IRQ_SPORT0_RX
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int "IRQ_SPORT0_RX"
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default 9
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config IRQ_SPORT0_TX
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int "IRQ_SPORT0_TX"
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default 9
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config IRQ_SPORT1_RX
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int "IRQ_SPORT1_RX"
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default 9
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config IRQ_SPORT1_TX
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int "IRQ_SPORT1_TX"
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default 9
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config IRQ_TWI
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int "IRQ_TWI"
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default 10
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config IRQ_SPI
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int "IRQ_SPI"
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default 10
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config IRQ_UART0_RX
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int "IRQ_UART0_RX"
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default 10
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config IRQ_UART0_TX
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int "IRQ_UART0_TX"
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default 10
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config IRQ_UART1_RX
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int "IRQ_UART1_RX"
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default 10
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config IRQ_UART1_TX
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int "IRQ_UART1_TX"
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default 10
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config IRQ_CAN_RX
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int "IRQ_CAN_RX"
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default 11
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config IRQ_CAN_TX
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int "IRQ_CAN_TX"
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default 11
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config IRQ_MAC_RX
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int "IRQ_MAC_RX"
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default 11
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config IRQ_MAC_TX
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int "IRQ_MAC_TX"
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default 11
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config IRQ_TIMER0
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int "IRQ_TIMER0"
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default 7 if TICKSOURCE_GPTMR0
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default 8
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config IRQ_TIMER1
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int "IRQ_TIMER1"
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default 12
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config IRQ_TIMER2
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int "IRQ_TIMER2"
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default 12
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config IRQ_TIMER3
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int "IRQ_TIMER3"
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default 12
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config IRQ_TIMER4
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int "IRQ_TIMER4"
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default 12
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config IRQ_TIMER5
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int "IRQ_TIMER5"
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default 12
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config IRQ_TIMER6
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int "IRQ_TIMER6"
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default 12
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config IRQ_TIMER7
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int "IRQ_TIMER7"
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default 12
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config IRQ_PROG_INTA
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int "IRQ_PROG_INTA"
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default 12
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config IRQ_PORTG_INTB
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int "IRQ_PORTG_INTB"
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default 12
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config IRQ_MEM_DMA0
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int "IRQ_MEM_DMA0"
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default 13
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config IRQ_MEM_DMA1
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int "IRQ_MEM_DMA1"
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default 13
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config IRQ_WATCH
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int "IRQ_WATCH"
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default 13
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help
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Enter the priority numbers between 7-13 ONLY. Others are Reserved.
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This applies to all the above. It is not recommended to assign the
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highest priority number 7 to UART or any other device.
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endmenu
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endmenu
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endif
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