diff options
Diffstat (limited to 'arch/blackfin/Kconfig')
| -rw-r--r-- | arch/blackfin/Kconfig | 49 |
1 files changed, 29 insertions, 20 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index ba21e33b8b1f..368bc7fe167e 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -544,7 +544,7 @@ config EXCPT_IRQ_SYSC_L1 default y help If enabled, the entire ASM lowlevel exception and interrupt entry code - (STORE/RESTORE CONTEXT) is linked into L1 instruction memory. + (STORE/RESTORE CONTEXT) is linked into L1 instruction memory. (less latency) config DO_IRQ_L1 @@ -904,29 +904,38 @@ config ARCH_SUSPEND_POSSIBLE depends on !SMP choice - prompt "Select PM Wakeup Event Source" - default PM_WAKEUP_GPIO_BY_SIC_IWR + prompt "Default Power Saving Mode" depends on PM - help - If you have a GPIO already configured as input with the corresponding PORTx_MASK - bit set - "Specify Wakeup Event by SIC_IWR value" + default PM_BFIN_SLEEP_DEEPER +config PM_BFIN_SLEEP_DEEPER + bool "Sleep Deeper" + help + Sleep "Deeper" Mode (High Power Savings) - This mode reduces dynamic + power dissipation by disabling the clock to the processor core (CCLK). + Furthermore, Standby sets the internal power supply voltage (VDDINT) + to 0.85 V to provide the greatest power savings, while preserving the + processor state. + The PLL and system clock (SCLK) continue to operate at a very low + frequency of about 3.3 MHz. To preserve data integrity in the SDRAM, + the SDRAM is put into Self Refresh Mode. Typically an external event + such as GPIO interrupt or RTC activity wakes up the processor. + Various Peripherals such as UART, SPORT, PPI may not function as + normal during Sleep Deeper, due to the reduced SCLK frequency. + When in the sleep mode, system DMA access to L1 memory is not supported. + +config PM_BFIN_SLEEP + bool "Sleep" + help + Sleep Mode (High Power Savings) - The sleep mode reduces power + dissipation by disabling the clock to the processor core (CCLK). + The PLL and system clock (SCLK), however, continue to operate in + this mode. Typically an external event or RTC activity will wake + up the processor. When in the sleep mode, + system DMA access to L1 memory is not supported. +endchoice -config PM_WAKEUP_GPIO_BY_SIC_IWR - bool "Specify Wakeup Event by SIC_IWR value" config PM_WAKEUP_BY_GPIO bool "Cause Wakeup Event by GPIO" -config PM_WAKEUP_GPIO_API - bool "Configure Wakeup Event by PM GPIO API" - -endchoice - -config PM_WAKEUP_SIC_IWR - hex "Wakeup Events (SIC_IWR)" - depends on PM_WAKEUP_GPIO_BY_SIC_IWR - default 0x8 if (BF537 || BF536 || BF534) - default 0x80 if (BF533 || BF532 || BF531) - default 0x80 if (BF54x) - default 0x80 if (BF52x) config PM_WAKEUP_GPIO_NUMBER int "Wakeup GPIO number" |