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authorTony Lindgren <tony@atomide.com>2020-05-07 09:59:31 -0700
committerTony Lindgren <tony@atomide.com>2020-05-19 09:38:04 -0700
commite428e250fde683ad3a658f8476f0914714e7eb6f (patch)
treeefa1ef8ba5a3a16c3d3cd2716ab8a13983304456 /arch/arm/boot/dts/omap3-beagle.dts
parent036a3d42bb8f28ae3cdd7c9570135c243724fbd6 (diff)
downloadlwn-e428e250fde683ad3a658f8476f0914714e7eb6f.tar.gz
lwn-e428e250fde683ad3a658f8476f0914714e7eb6f.zip
ARM: dts: Configure system timers for omap3
We can now init system timers using the dmtimer and 32k counter based on only devicetree data and drivers/clocksource timers. Let's configure the clocksource and clockevent, and drop the old unused platform data. As we're just dropping platform data, and the early platform data init is based on the custom ti,hwmods property, we want to drop both the platform data and ti,hwmods property in a single patch. Since the dmtimer can use both 32k clock and system clock as the source, let's also configure the SoC specific default values. The board specific dts files can reconfigure these with assigned-clocks and assigned-clock-parents as needed. Let's also update the dts file to use #include while at it. Cc: devicetree@vger.kernel.org Cc: Adam Ford <aford173@gmail.com> Cc: Andreas Kemnade <andreas@kemnade.info> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: "H. Nikolaus Schaller" <hns@goldelico.com> Cc: Keerthy <j-keerthy@ti.com> Cc: Lokesh Vutla <lokeshvutla@ti.com> Cc: Rob Herring <robh@kernel.org> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/boot/dts/omap3-beagle.dts')
-rw-r--r--arch/arm/boot/dts/omap3-beagle.dts33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts
index 4ed3f93f5841..dfa158647d91 100644
--- a/arch/arm/boot/dts/omap3-beagle.dts
+++ b/arch/arm/boot/dts/omap3-beagle.dts
@@ -304,6 +304,39 @@
phys = <0 &hsusb2_phy>;
};
+/* 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;
+ /delete-property/ti,no-idle;
+ timer@0 {
+ /delete-property/ti,timer-alwon;
+ };
+};
+
+/* Preferred always-on timer for clocksource */
+&timer12_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ /* Always clocked by secure_32k_fck */
+ };
+};
+
+/* 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;
/* pullups: BIT(1) */