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| author | Paul Cercueil <paul@crapouillou.net> | 2019-07-24 13:16:14 -0400 |
|---|---|---|
| committer | Paul Burton <paul.burton@mips.com> | 2019-08-08 15:31:13 -0700 |
| commit | 967a7100400ab8fa06752f4791934353bae67ced (patch) | |
| tree | ae3d775928c885f10665215f702a10843b54e713 /arch/mips | |
| parent | 157c887aff5236b2ee15d4e7d2719537f14dae49 (diff) | |
| download | linux-967a7100400ab8fa06752f4791934353bae67ced.tar.gz linux-967a7100400ab8fa06752f4791934353bae67ced.tar.bz2 linux-967a7100400ab8fa06752f4791934353bae67ced.zip | |
MIPS: GCW0: Reduce system timer and clocksource to 750 kHz
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>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Cc: od@zcrc.me
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/boot/dts/ingenic/gcw0.dts | 10 |
1 files changed, 10 insertions, 0 deletions
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>; +}; |