lkml.org 
[lkml]   [2021]   [Jun]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 4/4] MIPS: CI20: Add second percpu timer for SMP.
Date
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.

Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
---

Notes:
v2:
New patch.

v2->v3:
No change.

arch/mips/boot/dts/ingenic/ci20.dts | 21 +++++++++++----------
1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 8877c62..70005cc 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -118,6 +118,17 @@
assigned-clock-rates = <48000000>;
};

+&tcu {
+ /*
+ * 750 kHz for the system timers and 3 MHz for the clocksources,
+ * use channel #0 and #1 for the per cpu system timers, and use
+ * channel #2 for the clocksource.
+ */
+ assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>,
+ <&tcu TCU_CLK_TIMER2>, <&tcu TCU_CLK_OST>;
+ assigned-clock-rates = <750000>, <750000>, <3000000>, <3000000>;
+};
+
&mmc0 {
status = "okay";

@@ -522,13 +533,3 @@
bias-disable;
};
};
-
-&tcu {
- /*
- * 750 kHz for the system timer and 3 MHz for the 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>, <3000000>, <3000000>;
-};
--
2.7.4
\
 
 \ /
  Last update: 2021-06-24 17:07    [W:0.084 / U:1.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site