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| author | Paul Walmsley <paul@pwsan.com> | 2008-08-19 10:08:43 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2008-08-19 10:08:43 +0200 |
| commit | d459bfe01f523983a822de8c2d3fe0bd2f2c194e (patch) | |
| tree | 9f583480f3c0940778bb0f7b4fee5c68eb5b5bfc /arch/arm/plat-omap/Kconfig | |
| parent | ARM: OMAP: Powerdomain: Add OMAP3 powerdomains (diff) | |
| download | linux-d459bfe01f523983a822de8c2d3fe0bd2f2c194e.tar.xz linux-d459bfe01f523983a822de8c2d3fe0bd2f2c194e.zip | |
ARM: OMAP2: Clockdomain: Add base OMAP2/3 clockdomain code
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>
Diffstat (limited to 'arch/arm/plat-omap/Kconfig')
| -rw-r--r-- | arch/arm/plat-omap/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig index e815fa35f7f4..ef62bf21e179 100644 --- a/arch/arm/plat-omap/Kconfig +++ b/arch/arm/plat-omap/Kconfig @@ -41,6 +41,18 @@ config OMAP_DEBUG_POWERDOMAIN for every powerdomain register write. However, the extra detail costs some memory. +config OMAP_DEBUG_CLOCKDOMAIN + bool "Emit debug messages from clockdomain layer" + depends on ARCH_OMAP2 || ARCH_OMAP3 + default n + help + Say Y here if you want to compile in clockdomain layer + debugging messages for OMAP2/3. These messages can + provide more detail as to why some clockdomain calls + may be failing, and will also emit a descriptive message + for every clockdomain register write. However, the + extra detail costs some memory. + config OMAP_RESET_CLOCKS bool "Reset unused clocks during boot" depends on ARCH_OMAP |