The runtime PM does not offer enough granularity to control individual clocks separately as needed. Current pm implementation of omap_wdt blocks the CORE power domain from idling in OMAP SoC, as it keeps the interface clock of the watchdog always on. This causes severe power leakage in devices where the omap watchdog is in active use.
This patch set reverts the omap_wdt move to runtime_pm and introduces a tight control of the interface clock in the driver to only enable it when registers are accessed. The patch is based on earlier patch by Atal Shargorodsky. If anyone has good suggestions how to fix this with runtime_pm, feel free to propose patches. Otherwise I suggest we revert back to something that works. Tested with RX-51 S4.0 Macroboard, linux-omap-pm/pm branch and MeeGo armv7l release. Kalle Jokiniemi (2): Revert "OMAP: WDT: Use PM runtime APIs instead of clk FW APIs" Watchdog: omap_wdt: fix interface clock handling drivers/watchdog/omap_wdt.c | 64 +++++++++++++++++++++++++++++++++++++------ 1 files changed, 55 insertions(+), 9 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
