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From: "周琰杰 (Zhou Yanjie)" <zhouyanjie@wanyeetech.com>
To: tsbogend@alpha.franken.de, mturquette@baylibre.com,
	sboyd@kernel.org, paul@crapouillou.net, robh+dt@kernel.org
Cc: linux-mips@vger.kernel.org, devicetree@vger.kernel.org,
	linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
	dongsheng.qiu@ingenic.com, aric.pzqi@ingenic.com,
	rick.tyliu@ingenic.com, sihui.liu@ingenic.com,
	jun.jiang@ingenic.com, sernia.zhou@foxmail.com
Subject: [PATCH v3 4/4] MIPS: CI20: Add second percpu timer for SMP.
Date: Thu, 24 Jun 2021 23:06:29 +0800	[thread overview]
Message-ID: <1624547189-61079-5-git-send-email-zhouyanjie@wanyeetech.com> (raw)
In-Reply-To: <1624547189-61079-1-git-send-email-zhouyanjie@wanyeetech.com>

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


  parent reply	other threads:[~2021-06-24 15:06 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-24 15:06 [PATCH v3 0/4] Misc Ingenic patches 周琰杰 (Zhou Yanjie)
2021-06-24 15:06 ` [PATCH v3 1/4] MIPS: X1830: Respect cell count of common properties 周琰杰 (Zhou Yanjie)
2021-06-24 15:06 ` [PATCH v3 2/4] dt-bindings: clock: Add documentation for MAC PHY control bindings 周琰杰 (Zhou Yanjie)
2021-06-25 11:18   ` Paul Cercueil
2021-06-24 15:06 ` [PATCH v3 3/4] MIPS: Ingenic: Add MAC syscon nodes for Ingenic SoCs 周琰杰 (Zhou Yanjie)
2021-06-24 15:06 ` 周琰杰 (Zhou Yanjie) [this message]
2021-06-25 11:31   ` [PATCH v3 4/4] MIPS: CI20: Add second percpu timer for SMP Paul Cercueil
2021-06-25 12:14     ` 周琰杰
2021-06-25 15:19     ` 周琰杰
2021-06-25 15:47       ` Paul Cercueil
2021-06-25 16:32         ` 周琰杰

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