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ARM: dts: Use 32KiHz oscillator on devkit8000

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Devkit8000 board seems to always used 32k_counter as clocksource.
Restore this behavior.

If clocksource is back to 32k_counter, timer12 is now the clockevent
source (as before) and timer2 is not longer needed here.

This commit fixes the same issue observed with commit 23885389db
("ARM: dts: Fix timer regression for beagleboard revision c") when sleep
is blocked until hitting keys over serial console.

Fixes: aba1ad05da ("clocksource/drivers/timer-ti-dm: Add clockevent and clocksource support")
Fixes: e428e250fd ("ARM: dts: Configure system timers for omap3")
Signed-off-by: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Anthoine Bourgeois 2022-01-25 20:11:39 +01:00 committed by Tony Lindgren
parent 64324ef337
commit 8840f5460a
2 changed files with 2 additions and 18 deletions
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17
arch/arm/boot/dts/omap3-devkit8000-common.dtsi
View File

@ -158,11 +158,6 @@
status = "disabled";
};
/* Unusable as clocksource because of unreliable oscillator */
&counter32k {
status = "disabled";
};
/* Unusable as clockevent because if unreliable oscillator, allow to idle */
&timer1_target {
/delete-property/ti,no-reset-on-init;
@ -172,7 +167,7 @@
};
};
/* Preferred always-on timer for clocksource */
/* Preferred timer for clockevent */
&timer12_target {
ti,no-reset-on-init;
ti,no-idle;
@ -181,16 +176,6 @@
};
};
/* Preferred timer for clockevent */
&timer2_target {
ti,no-reset-on-init;
ti,no-idle;
timer@0 {
assigned-clocks = <&gpt2_fck>;
assigned-clock-parents = <&sys_ck>;
};
};
&twl_gpio {
ti,use-leds;
/*

3
drivers/clocksource/timer-ti-dm-systimer.c
View File

@ -241,8 +241,7 @@ static void __init dmtimer_systimer_assign_alwon(void)
bool quirk_unreliable_oscillator = false;
/* Quirk unreliable 32 KiHz oscillator with incomplete dts */
if (of_machine_is_compatible("ti,omap3-beagle-ab4") ||
of_machine_is_compatible("timll,omap3-devkit8000")) {
if (of_machine_is_compatible("ti,omap3-beagle-ab4")) {
quirk_unreliable_oscillator = true;
counter_32k = -ENODEV;
}