summaryrefslogtreecommitdiff
path: root/arch/arm/boot/dts/am33xx.dtsi
diff options
context:
space:
mode:
authorTony Lindgren <tony@atomide.com>2020-05-07 19:59:31 +0300
committerTony Lindgren <tony@atomide.com>2020-05-19 19:38:03 +0300
commite20ef23dd6937c38df2cfddf15270668153c8177 (patch)
tree7dd03b9bde908a12197968f0f51961569420ec0d /arch/arm/boot/dts/am33xx.dtsi
parente69b4e1a7577c169e9f52edf977401734a6a29eb (diff)
downloadlinux-e20ef23dd6937c38df2cfddf15270668153c8177.tar.xz
ARM: dts: Configure system timers for am335x
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. Cc: devicetree@vger.kernel.org Cc: Grygorii Strashko <grygorii.strashko@ti.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/am33xx.dtsi')
-rw-r--r--arch/arm/boot/dts/am33xx.dtsi20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index a35f5052d76f..3b177c9c4412 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -619,3 +619,23 @@
#reset-cells = <1>;
};
};
+
+/* Preferred always-on timer for clocksource */
+&timer1_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ assigned-clocks = <&timer1_fck>;
+ assigned-clock-parents = <&sys_clkin_ck>;
+ };
+};
+
+/* Preferred timer for clockevent */
+&timer2_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ assigned-clocks = <&timer2_fck>;
+ assigned-clock-parents = <&sys_clkin_ck>;
+ };
+};