linux-kernel - [PATCH v2 5/6] MIPS: CI20: Modify DTS to support high resolution timer for SMP.

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Message-Id: <1579195429-59828-7-git-send-email-zhouyanjie@wanyeetech.com>
Date:   Fri, 17 Jan 2020 01:23:48 +0800
From:   周琰杰 (Zhou Yanjie) 
        <zhouyanjie@...yeetech.com>
To:     linux-mips@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        mips-creator-ci20-dev@...glegroups.com, robh+dt@...nel.org,
        paul.burton@...s.com, paulburton@...nel.org, jhogan@...nel.org,
        mark.rutland@....com, syq@...ian.org, ralf@...ux-mips.org,
        rick.tyliu@...enic.com, jason@...edaemon.net,
        keescook@...omium.org, geert+renesas@...der.be, krzk@...nel.org,
        paul@...pouillou.net, prasannatsmkumar@...il.com,
        sernia.zhou@...mail.com, zhenwenjin@...il.com,
        ebiederm@...ssion.com, hns@...delico.com, paul@...die.org.uk
Subject: [PATCH v2 5/6] MIPS: CI20: Modify DTS to support high resolution timer for SMP.

Modify DTS, change tcu channel from 2 to 3, channel #0 and #1 for
per core local timer, #2 for clocksource.

Tested-by: H. Nikolaus Schaller <hns@...delico.com>
Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@...yeetech.com>
---

Notes:
    v1->v2:
    No change.

 arch/mips/boot/dts/ingenic/ci20.dts | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 37b9316..98c4c42 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -456,6 +456,13 @@
 
 &tcu {
 	/* 3 MHz for the system timer and clocksource */
-	assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>;
-	assigned-clock-rates = <3000000>, <3000000>;
+	assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>,
+					  <&tcu TCU_CLK_TIMER2>;
+	assigned-clock-rates = <3000000>, <3000000>, <750000>;
+
+	/*
+	 * Use channel #0 and #1 for the per core system timer,
+	 * and use channel #2 for the clocksource.
+	 */
+	ingenic,pwm-channels-mask = <0xF8>;
 };
-- 
2.7.4