From: Paul Cercueil <paul@crapouillou.net>
To: Daniel Lezcano <daniel.lezcano@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ralf Baechle <ralf@linux-mips.org>,
Paul Burton <paul.burton@mips.com>,
James Hogan <jhogan@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
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>,
od@zcrc.me, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
linux-doc@vger.kernel.org, linux-clk@vger.kernel.org,
Paul Cercueil <paul@crapouillou.net>,
Artur Rojek <contact@artur-rojek.eu>
Subject: [PATCH v13 12/13] MIPS: GCW0: Reduce system timer and clocksource to 750 kHz
Date: Tue, 25 Jun 2019 00:57:58 +0200 [thread overview]
Message-ID: <20190624225759.18299-13-paul@crapouillou.net> (raw)
In-Reply-To: <20190624225759.18299-1-paul@crapouillou.net>
The default clock (12 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:
v8: New patch
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: No change
v12: Move clocksource to channel 2, as channel 1 is used as PWM
for the backlight.
v13: No change
arch/mips/boot/dts/ingenic/gcw0.dts | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/mips/boot/dts/ingenic/gcw0.dts b/arch/mips/boot/dts/ingenic/gcw0.dts
index 35f0291e8d38..f58d239c2058 100644
--- a/arch/mips/boot/dts/ingenic/gcw0.dts
+++ b/arch/mips/boot/dts/ingenic/gcw0.dts
@@ -2,6 +2,7 @@
/dts-v1/;
#include "jz4770.dtsi"
+#include <dt-bindings/clock/ingenic,tcu.h>
/ {
compatible = "gcw,zero", "ingenic,jz4770";
@@ -60,3 +61,12 @@
/* The WiFi module is connected to the UHC. */
status = "okay";
};
+
+&tcu {
+ /* 750 kHz for the system timer and clocksource */
+ assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER2>;
+ assigned-clock-rates = <750000>, <750000>;
+
+ /* PWM1 is in use, so reserve channel #2 for the clocksource */
+ ingenic,pwm-channels-mask = <0xfa>;
+};
--
2.21.0.593.g511ec345e18
next prev parent reply other threads:[~2019-06-24 22:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-24 22:57 [PATCH v13 00/13] Ingenic Timer/Counter Unit patchset v13 Paul Cercueil
2019-06-24 22:57 ` [PATCH v13 01/13] dt-bindings: ingenic: Add DT bindings for TCU clocks Paul Cercueil
2019-06-24 22:57 ` [PATCH v13 02/13] doc: Add doc for the Ingenic TCU hardware Paul Cercueil
2019-06-25 6:44 ` Thomas Gleixner
2019-06-24 22:57 ` [PATCH v13 03/13] dt-bindings: Add doc for the Ingenic TCU drivers Paul Cercueil
2019-06-24 22:57 ` [PATCH v13 04/13] mfd: Add Ingenic TCU driver Paul Cercueil
2019-06-25 17:30 ` Paul Burton
2019-06-25 17:47 ` Paul Cercueil
2019-06-24 22:57 ` [PATCH v13 05/13] clk: ingenic: Add driver for the TCU clocks Paul Cercueil
2019-06-25 22:09 ` Stephen Boyd
2019-06-25 22:37 ` Paul Cercueil
2019-06-25 23:28 ` Stephen Boyd
2019-06-24 22:57 ` [PATCH v13 06/13] irqchip: Add irq-ingenic-tcu driver Paul Cercueil
2019-06-25 6:51 ` Thomas Gleixner
2019-06-24 22:57 ` [PATCH v13 07/13] clocksource: Add a new timer-ingenic driver Paul Cercueil
2019-06-25 6:53 ` Thomas Gleixner
2019-06-24 22:57 ` [PATCH v13 08/13] clk: jz4740: Add TCU clock Paul Cercueil
2019-06-24 22:57 ` [PATCH v13 09/13] MIPS: jz4740: Add DTS nodes for the TCU drivers Paul Cercueil
2019-06-24 22:57 ` [PATCH v13 10/13] MIPS: qi_lb60: Reduce system timer and clocksource to 750 kHz Paul Cercueil
2019-06-24 22:57 ` [PATCH v13 11/13] MIPS: CI20: Reduce system timer and clocksource to 3 MHz Paul Cercueil
2019-06-24 22:57 ` Paul Cercueil [this message]
2019-06-24 22:57 ` [PATCH v13 13/13] MIPS: jz4740: Drop obsolete code Paul Cercueil
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