Re: [PATCH v4 5/6] MIPS: CI20: Modify DTS to support high resolution timer for SMP.
From: Paul Cercueil <paul@crapouillou.net>
Date: 2020-02-14 18:38:35
Also in:
linux-clk, linux-mips, lkml
Hi Zhou, I think you can move this patch before the clocksource one - it will work with the old clocksource code and in generally it's a good idea to ensure (if possible) that you can git-bisect without ending up with a broken kernel. -Paul Le sam., févr. 15, 2020 at 02:02, 周琰杰 (Zhou Yanjie) [off-list ref] a écrit :
quoted hunk ↗ jump to hunk
Modify DTS, change tcu channel from 2 to 3, channel #0 and #1 for per core local timer, #2 for clocksource. Tested-by: H. Nikolaus Schaller <redacted> Tested-by: Paul Boddie <redacted> Signed-off-by: 周琰杰 (Zhou Yanjie) <redacted> --- Notes: v1->v2: No change. v2->v3: No change. v3->v4: Rebase on top of kernel 5.6-rc1. arch/mips/boot/dts/ingenic/ci20.dts | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)diff --git a/arch/mips/boot/dts/ingenic/ci20.dtsb/arch/mips/boot/dts/ingenic/ci20.dts index 37b9316..98c4c42 100644--- a/arch/mips/boot/dts/ingenic/ci20.dts +++ b/arch/mips/boot/dts/ingenic/ci20.dts@@ -456,6 +456,13 @@ &tcu { /* 3 MHz for the system timer and clocksource */ - assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>; - assigned-clock-rates = <3000000>, <3000000>; + assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>, + <&tcu TCU_CLK_TIMER2>; + assigned-clock-rates = <3000000>, <3000000>, <750000>; + + /* + * Use channel #0 and #1 for the per core system timer, + * and use channel #2 for the clocksource. + */ + ingenic,pwm-channels-mask = <0xF8>; }; --2.7.4