forked from Minki/linux
d459bfe01f
This patch creates an interface to the clockdomain registers in the PRM/CM modules on OMAP2/3. This interface is intended to be used by PM code, e.g., pm.c; not by device drivers directly. The patch also adds clockdomain usecount tracking. This is intended to be called whenever the first clock in a clockdomain is enabled, or when the last enabled clock in a clockdomain is disabled. If the clockdomain is in software-supervised mode, the code will force-wakeup or force-sleep the clockdomain. If the clockdomain is in hardware-supervised mode, the first clock enable will add sleep and wakeup dependencies on a user-selectable set of parent domains (usually MPU & IVA2), and the disable will remove them. Each clockdomain will be defined in later patches as static structures. The clockdomain structures are linked into a list at boot by clkdm_register(), similar to the OMAP clock code. The patch adds a Kconfig option, CONFIG_OMAP_DEBUG_CLOCKDOMAIN, which when enabled will emit verbose debug messages via pr_debug(). Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
168 lines
4.4 KiB
Plaintext
168 lines
4.4 KiB
Plaintext
if ARCH_OMAP
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menu "TI OMAP Implementations"
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config ARCH_OMAP_OTG
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bool
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choice
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prompt "OMAP System Type"
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default ARCH_OMAP1
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config ARCH_OMAP1
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bool "TI OMAP1"
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config ARCH_OMAP2
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bool "TI OMAP2"
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endchoice
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comment "OMAP Feature Selections"
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config OMAP_DEBUG_DEVICES
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bool
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help
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For debug cards on TI reference boards.
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config OMAP_DEBUG_LEDS
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bool
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depends on OMAP_DEBUG_DEVICES
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default y if LEDS || LEDS_OMAP_DEBUG
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config OMAP_DEBUG_POWERDOMAIN
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bool "Emit debug messages from powerdomain layer"
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depends on ARCH_OMAP2 || ARCH_OMAP3
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default n
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help
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Say Y here if you want to compile in powerdomain layer
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debugging messages for OMAP2/3. These messages can
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provide more detail as to why some powerdomain calls
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may be failing, and will also emit a descriptive message
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for every powerdomain register write. However, the
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extra detail costs some memory.
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config OMAP_DEBUG_CLOCKDOMAIN
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bool "Emit debug messages from clockdomain layer"
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depends on ARCH_OMAP2 || ARCH_OMAP3
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default n
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help
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Say Y here if you want to compile in clockdomain layer
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debugging messages for OMAP2/3. These messages can
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provide more detail as to why some clockdomain calls
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may be failing, and will also emit a descriptive message
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for every clockdomain register write. However, the
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extra detail costs some memory.
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config OMAP_RESET_CLOCKS
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bool "Reset unused clocks during boot"
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depends on ARCH_OMAP
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help
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Say Y if you want to reset unused clocks during boot.
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This option saves power, but assumes all drivers are
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using the clock framework. Broken drivers that do not
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yet use clock framework may not work with this option.
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If you are booting from another operating system, you
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probably do not want this option enabled until your
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device drivers work properly.
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config OMAP_MUX
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bool "OMAP multiplexing support"
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depends on ARCH_OMAP
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default y
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help
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Pin multiplexing support for OMAP boards. If your bootloader
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sets the multiplexing correctly, say N. Otherwise, or if unsure,
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say Y.
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config OMAP_MUX_DEBUG
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bool "Multiplexing debug output"
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depends on OMAP_MUX
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help
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Makes the multiplexing functions print out a lot of debug info.
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This is useful if you want to find out the correct values of the
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multiplexing registers.
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config OMAP_MUX_WARNINGS
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bool "Warn about pins the bootloader didn't set up"
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depends on OMAP_MUX
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default y
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help
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Choose Y here to warn whenever driver initialization logic needs
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to change the pin multiplexing setup. When there are no warnings
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printed, it's safe to deselect OMAP_MUX for your product.
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config OMAP_MCBSP
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bool "McBSP support"
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depends on ARCH_OMAP
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default y
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help
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Say Y here if you want support for the OMAP Multichannel
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Buffered Serial Port.
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choice
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prompt "System timer"
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default OMAP_MPU_TIMER
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config OMAP_MPU_TIMER
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bool "Use mpu timer"
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help
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Select this option if you want to use the OMAP mpu timer. This
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timer provides more intra-tick resolution than the 32KHz timer,
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but consumes more power.
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config OMAP_32K_TIMER
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bool "Use 32KHz timer"
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depends on ARCH_OMAP16XX || ARCH_OMAP24XX
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help
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Select this option if you want to enable the OMAP 32KHz timer.
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This timer saves power compared to the OMAP_MPU_TIMER, and has
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support for no tick during idle. The 32KHz timer provides less
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intra-tick resolution than OMAP_MPU_TIMER. The 32KHz timer is
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currently only available for OMAP16XX and 24XX.
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endchoice
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config OMAP_32K_TIMER_HZ
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int "Kernel internal timer frequency for 32KHz timer"
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range 32 1024
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depends on OMAP_32K_TIMER
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default "128"
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help
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Kernel internal timer frequency should be a divisor of 32768,
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such as 64 or 128.
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config OMAP_DM_TIMER
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bool "Use dual-mode timer"
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depends on ARCH_OMAP16XX || ARCH_OMAP24XX
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help
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Select this option if you want to use OMAP Dual-Mode timers.
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choice
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prompt "Low-level debug console UART"
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depends on ARCH_OMAP
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default OMAP_LL_DEBUG_UART1
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config OMAP_LL_DEBUG_UART1
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bool "UART1"
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config OMAP_LL_DEBUG_UART2
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bool "UART2"
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config OMAP_LL_DEBUG_UART3
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bool "UART3"
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endchoice
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config OMAP_SERIAL_WAKE
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bool "Enable wake-up events for serial ports"
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depends on OMAP_MUX
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default y
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help
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Select this option if you want to have your system wake up
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to data on the serial RX line. This allows you to wake the
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system from serial console.
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endmenu
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endif
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