From: Paul Cercueil <paul@crapouillou.net>
To: Lee Jones <lee.jones@linaro.org>,
Jonathan Corbet <corbet@lwn.net>,
Ralf Baechle <ralf@linux-mips.org>,
Paul Burton <paul.burton@mips.com>,
James Hogan <jhogan@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Mathieu Malaterre <malat@debian.org>,
od@zcrc.me, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-mips@vger.kernel.org, linux-clk@vger.kernel.org,
Paul Cercueil <paul@crapouillou.net>,
Artur Rojek <contact@artur-rojek.eu>
Subject: [PATCH v14 11/13] MIPS: CI20: Reduce system timer and clocksource to 3 MHz
Date: Mon, 1 Jul 2019 17:14:08 +0200 [thread overview]
Message-ID: <20190701151410.23127-12-paul@crapouillou.net> (raw)
In-Reply-To: <20190701151410.23127-1-paul@crapouillou.net>
The default clock (48 MHz) is too fast for the system timer.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
---
Notes:
v5: New patch
v6: Set also the rate for the clocksource channel's clock
v7: No change
v8: No change
v9: Don't configure clock timer1, as the OS Timer is used as
clocksource on this SoC
v10: Revert back to v8 bahaviour. Let the user choose what
clocksource should be used.
v11-v14: No change
arch/mips/boot/dts/ingenic/ci20.dts | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 4f7b1fa31cf5..2e9952311ecd 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -2,6 +2,7 @@
/dts-v1/;
#include "jz4780.dtsi"
+#include <dt-bindings/clock/ingenic,tcu.h>
#include <dt-bindings/gpio/gpio.h>
/ {
@@ -238,3 +239,9 @@
bias-disable;
};
};
+
+&tcu {
+ /* 3 MHz for the system timer and clocksource */
+ assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>;
+ assigned-clock-rates = <3000000>, <3000000>;
+};
--
2.21.0.593.g511ec345e18
next prev parent reply other threads:[~2019-07-01 15:15 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-01 15:13 [PATCH v14 00/13] Ingenic TCU patchset v14 Paul Cercueil
2019-07-01 15:13 ` [PATCH v14 01/13] dt-bindings: ingenic: Add DT bindings for TCU clocks Paul Cercueil
2019-07-01 15:13 ` [PATCH v14 02/13] doc: Add doc for the Ingenic TCU hardware Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 03/13] dt-bindings: Add doc for the Ingenic TCU drivers Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 04/13] mfd: Add Ingenic TCU driver Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 05/13] clk: ingenic: Add driver for the TCU clocks Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 06/13] irqchip: Add irq-ingenic-tcu driver Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 07/13] clocksource: Add a new timer-ingenic driver Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 08/13] clk: jz4740: Add TCU clock Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 09/13] MIPS: jz4740: Add DTS nodes for the TCU drivers Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 10/13] MIPS: qi_lb60: Reduce system timer and clocksource to 750 kHz Paul Cercueil
2019-07-01 15:14 ` Paul Cercueil [this message]
2019-07-01 15:14 ` [PATCH v14 12/13] MIPS: GCW0: " Paul Cercueil
2019-07-01 15:14 ` [PATCH v14 13/13] MIPS: jz4740: Drop obsolete code Paul Cercueil
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