Hi On Tue, 3 Apr 2012, Kevin Hilman wrote:
> Indeed, like you, I have to change the EMU clock domain to SWSUP[1] in > order to see any interrupts and see anything in perf top. This isn't > really a mergeable workaround, so I'll look into this a little closer > with Santosh to see what we can do once we fully understand the HW > problem. Part of the problem is that the clockdomain data for the emu_sys clockdomain is wrong. Here's something to try to fix it. It might just be enough to get it to work. - Paul From: Paul Walmsley <[email protected]> Date: Tue, 3 Apr 2012 17:13:48 -0600 Subject: [PATCH] ARM: OMAP44xx: clockdomain data: correct the emu_sys_clkdm CLKTRCTRL data According to the 4430 ES2.0 TRM vX Table 3-744 "CM_EMU_CLKSTCTRL", the emu_sys clockdomain data in mainline is incorrect. The emu_sys clockdomain does not support the DISABLE_AUTO state, and instead it supports the FORCE_WAKEUP state. Signed-off-by: Paul Walmsley <[email protected]> Cc: Benoît Cousson <[email protected]> Cc: Kevin Hilman <[email protected]> Cc: Santosh Shilimkar <[email protected]> Cc: Ming Lei <[email protected]> --- arch/arm/mach-omap2/clockdomains44xx_data.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/clockdomains44xx_data.c b/arch/arm/mach-omap2/clockdomains44xx_data.c index 9299ac2..bd7ed13 100644 --- a/arch/arm/mach-omap2/clockdomains44xx_data.c +++ b/arch/arm/mach-omap2/clockdomains44xx_data.c @@ -390,7 +390,7 @@ static struct clockdomain emu_sys_44xx_clkdm = { .prcm_partition = OMAP4430_PRM_PARTITION, .cm_inst = OMAP4430_PRM_EMU_CM_INST, .clkdm_offs = OMAP4430_PRM_EMU_CM_EMU_CDOFFS, - .flags = CLKDM_CAN_HWSUP, + .flags = CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_FORCE_WAKEUP, }; static struct clockdomain l3_dma_44xx_clkdm = { -- 1.7.9.5
