1.Add a new TCU channel as the percpu timer of core1, this is to
prepare for the subsequent SMP support. The newly added channel
will not adversely affect the current single-core state.
2.Adjust the position of TCU node to make it consistent with the
order in jz4780.dtsi file.
Tested-by: Nikolaus Schaller <hns@xxxxxxxxxxxxx> # on CI20
Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@xxxxxxxxxxxxxx>
---
Notes:
v2:
New patch.
v2->v3:
No change.
v3->v4:
Improve TCU related notes.
arch/mips/boot/dts/ingenic/ci20.dts | 24 ++++++++++++++----------
1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 3a4eaf1..61c153b 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -118,6 +118,20 @@
assigned-clock-rates = <48000000>;
};
+&tcu {
+ /*
+ * 750 kHz for the system timers and clocksource,
+ * use channel #0 and #1 for the per cpu system timers,
+ * and use channel #2 for the clocksource.
+ *
+ * 3000 kHz for the OST timer to provide a higher
+ * precision clocksource.
+ */
+ assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>,
+ <&tcu TCU_CLK_TIMER2>, <&tcu TCU_CLK_OST>;
+ assigned-clock-rates = <750000>, <750000>, <750000>, <3000000>;
+};
+
&mmc0 {
status = "okay";
@@ -522,13 +536,3 @@
bias-disable;
};
};
-
-&tcu {
- /*
- * 750 kHz for the system timer and clocksource,
- * use channel #0 for the system timer, #1 for the clocksource.
- */
- assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>,
- <&tcu TCU_CLK_OST>;
- assigned-clock-rates = <750000>, <750000>, <3000000>;
-};
--
2.7.4
