Messages in this thread | | | Date | Thu, 29 Mar 2018 13:42:55 +0200 | From | Alexandre Belloni <> | Subject | Re: [PATCH v3 0/6] clocksource: rework Atmel TCB timer driver |
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On 29/03/2018 at 13:31:18 +0200, Alexander Dahl wrote: > Pretty sure. I rebuilt the whole BSP and added another line to the kernel > source to see if the tree I applied the patches to, was actually built: > > > diff --git a/drivers/clocksource/timer-atmel-tcb.c b/drivers/clocksource/timer-atmel-tcb.c > index 7fde9cfbf203..f85affc74a86 100644 > --- a/drivers/clocksource/timer-atmel-tcb.c > +++ b/drivers/clocksource/timer-atmel-tcb.c > @@ -222,7 +222,8 @@ static int __init tc_clkevt_register(struct device_node *node, > goto err_slow; > clk_disable(tce.clk); > > - clockevents_config_and_register(&tce.clkevt, 32768, 1, bits - 1); > + pr_info( "*** bits: 0x%x, BIT(bits): 0x%lx\n", bits, BIT(bits) ); > + clockevents_config_and_register(&tce.clkevt, 32768, 1, BIT(bits) - 1); > > ret = request_irq(tce.irq, tc_clkevt2_irq, IRQF_TIMER | IRQF_SHARED, > tce.clkevt.name, &tce); > >
I've just tested on a g20, old driver: INT NAME RATE MAX 16 [vel at91_tick,] 175 Ints/s (max: 231) 19 [ vel tc_clkevt] 129 Ints/s (max: 129)
new driver: INT NAME RATE MAX 17 [vel timer@fffa] 129 Ints/s (max: 129) 18 [ vel ttyS0] 175 Ints/s (max: 231)
-- Alexandre Belloni, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com
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