From 8840f5460a23759403f1f2860429dcbcc2f04a65 Mon Sep 17 00:00:00 2001
From: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
Date: Tue, 25 Jan 2022 20:11:39 +0100
Subject: [PATCH] ARM: dts: Use 32KiHz oscillator on devkit8000
Git-commit: 8840f5460a23759403f1f2860429dcbcc2f04a65
Patch-mainline: v5.17-rc7
References: git-fixes

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 23885389dbbb
("arm: dts: Fix timer regression for beagleboard revision c") when sleep
is blocked until hitting keys over serial console.

Fixes: aba1ad05da08 ("clocksource/drivers/timer-ti-dm: Add clockevent and clocksource support")
Fixes: e428e250fde6 ("ARM: dts: Configure system timers for omap3")
Signed-off-by: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 arch/arm/boot/dts/omap3-devkit8000-common.dtsi | 17 +----------------
 drivers/clocksource/timer-ti-dm-systimer.c     |  3 +--
 2 files changed, 2 insertions(+), 18 deletions(-)

diff --git a/arch/arm/boot/dts/omap3-devkit8000-common.dtsi b/arch/arm/boot/dts/omap3-devkit8000-common.dtsi
index f5197bb31ed8..54cd37336be7 100644
--- a/arch/arm/boot/dts/omap3-devkit8000-common.dtsi
+++ b/arch/arm/boot/dts/omap3-devkit8000-common.dtsi
@@ -158,11 +158,6 @@ &mmc3 {
 	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 @@ timer@0 {
 	};
 };
 
-/* Preferred always-on timer for clocksource */
+/* Preferred timer for clockevent */
 &timer12_target {
 	ti,no-reset-on-init;
 	ti,no-idle;
@@ -181,16 +176,6 @@ timer@0 {
 	};
 };
 
-/* 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;
 	/*
diff --git a/drivers/clocksource/timer-ti-dm-systimer.c b/drivers/clocksource/timer-ti-dm-systimer.c
index 5c40ca1d4740..1fccb457fcc5 100644
--- a/drivers/clocksource/timer-ti-dm-systimer.c
+++ b/drivers/clocksource/timer-ti-dm-systimer.c
@@ -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;
 	}
-- 
2.31.1