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ARM: dts: Configure system timers for am437x

Ver código fonte 
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>
Esse commit está contido em:
Tony Lindgren
2020-05-07 09:59:31 -07:00
pai e20ef23dd6
commit 545a95582e
7 arquivos alterados com 23 adições e 121 exclusões
Baixar arquivo de patch Baixar arquivo de diferenças Expandir todos os arquivos Colapsar todos os arquivos

20
arch/arm/boot/dts/am4372.dtsi
Ver arquivo

@@ -553,3 +553,23 @@
#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>;
};
};

7
arch/arm/boot/dts/am437x-l4.dtsi
Ver arquivo

@@ -328,9 +328,8 @@
};
};
target-module@31000 { /* 0x44e31000, ap 24 40.0 */
timer1_target: target-module@31000 { /* 0x44e31000, ap 24 40.0 */
compatible = "ti,sysc-omap2-timer", "ti,sysc";
ti,hwmods = "timer1";
reg = <0x31000 0x4>,
<0x31010 0x4>,
<0x31014 0x4>;
@@ -450,7 +449,6 @@
target-module@86000 { /* 0x44e86000, ap 40 70.0 */
compatible = "ti,sysc-omap2", "ti,sysc";
ti,hwmods = "counter_32k";
reg = <0x86000 0x4>,
<0x86004 0x4>;
reg-names = "rev", "sysc";
@@ -868,9 +866,8 @@
};
};
target-module@40000 { /* 0x48040000, ap 18 1e.0 */
timer2_target: target-module@40000 { /* 0x48040000, ap 18 1e.0 */
compatible = "ti,sysc-omap4-timer", "ti,sysc";
ti,hwmods = "timer2";
reg = <0x40000 0x4>,
<0x40010 0x4>,
<0x40014 0x4>;