From: Paul Cercueil <paul@crapouillou.net>
To: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Ralf Baechle <ralf@linux-mips.org>,
Paul Burton <paul.burton@mips.com>,
James Hogan <jhogan@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <marc.zyngier@arm.com>,
Lee Jones <lee.jones@linaro.org>
Cc: Mathieu Malaterre <malat@debian.org>,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-mips@vger.kernel.org, linux-doc@vger.kernel.org,
linux-clk@vger.kernel.org, od@zcrc.me,
Paul Cercueil <paul@crapouillou.net>
Subject: [PATCH v12 10/13] MIPS: qi_lb60: Reduce system timer and clocksource to 750 kHz
Date: Tue, 21 May 2019 16:51:38 +0200 [thread overview]
Message-ID: <20190521145141.9813-11-paul@crapouillou.net> (raw)
In-Reply-To: <20190521145141.9813-1-paul@crapouillou.net>
The default clock (12 MHz) is too fast for the system timer, which fails
to report time accurately.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
Notes:
v5: New patch
v6: Remove ingenic,clocksource-channel property
v7-v12: No change
arch/mips/boot/dts/ingenic/qi_lb60.dts | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/mips/boot/dts/ingenic/qi_lb60.dts b/arch/mips/boot/dts/ingenic/qi_lb60.dts
index 76aaf8982554..01b8c917cb33 100644
--- a/arch/mips/boot/dts/ingenic/qi_lb60.dts
+++ b/arch/mips/boot/dts/ingenic/qi_lb60.dts
@@ -2,6 +2,7 @@
/dts-v1/;
#include "jz4740.dtsi"
+#include <dt-bindings/clock/ingenic,tcu.h>
/ {
compatible = "qi,lb60", "ingenic,jz4740";
@@ -31,3 +32,9 @@
bias-disable;
};
};
+
+&tcu {
+ /* 750 kHz for the system timer and clocksource */
+ assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>;
+ assigned-clock-rates = <750000>, <750000>;
+};
--
2.21.0.593.g511ec345e18
next prev parent reply other threads:[~2019-05-21 14:52 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-21 14:51 Ingenic Timer/Counter Unit (TCU) patchset v12 Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 01/13] dt-bindings: ingenic: Add DT bindings for TCU clocks Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 02/13] doc: Add doc for the Ingenic TCU hardware Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 03/13] dt-bindings: Add doc for the Ingenic TCU drivers Paul Cercueil
2019-05-24 20:21 ` Rob Herring
2019-05-25 19:13 ` Paul Cercueil
2019-06-11 14:57 ` Rob Herring
2019-05-21 14:51 ` [PATCH v12 04/13] mfd: Add Ingenic TCU driver Paul Cercueil
2019-06-22 12:21 ` Paul Cercueil
2019-06-26 13:18 ` Lee Jones
2019-06-26 13:55 ` Paul Cercueil
2019-06-27 6:58 ` Lee Jones
2019-06-27 8:49 ` Paul Cercueil
2019-06-27 9:01 ` Lee Jones
2019-06-27 9:19 ` Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 05/13] clk: ingenic: Add driver for the TCU clocks Paul Cercueil
2019-06-07 21:28 ` Stephen Boyd
2019-06-07 21:59 ` Paul Cercueil
2019-06-07 22:50 ` Stephen Boyd
2019-05-21 14:51 ` [PATCH v12 06/13] irqchip: Add irq-ingenic-tcu driver Paul Cercueil
2019-06-22 12:22 ` Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 07/13] clocksource: Add a new timer-ingenic driver Paul Cercueil
2019-06-22 12:23 ` Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 08/13] clk: jz4740: Add TCU clock Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 09/13] MIPS: jz4740: Add DTS nodes for the TCU drivers Paul Cercueil
2019-05-22 9:21 ` Mathieu Malaterre
2019-05-22 11:15 ` Paul Cercueil
2019-05-21 14:51 ` Paul Cercueil [this message]
2019-05-21 14:51 ` [PATCH v12 11/13] MIPS: CI20: Reduce system timer and clocksource to 3 MHz Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 12/13] MIPS: GCW0: Reduce system timer and clocksource to 750 kHz Paul Cercueil
2019-05-21 14:51 ` [PATCH v12 13/13] MIPS: jz4740: Drop obsolete code Paul Cercueil
2019-05-27 11:39 ` Ingenic Timer/Counter Unit (TCU) patchset v12 Mathieu Malaterre
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