linux-kernel - Re: [PATCH v7 0/3] clocksource/drivers/atcpit100: Add andestech atcpit100 timer

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Date:   Wed, 21 Feb 2018 15:20:21 +0800
From:   Greentime Hu <green.hu@...il.com>
To:     Greentime <greentime@...estech.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Vincent Chen <deanbo422@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rick Chen <rick@...estech.com>
Cc:     Green Hu <green.hu@...il.com>
Subject: Re: [PATCH v7 0/3] clocksource/drivers/atcpit100: Add andestech
 atcpit100 timer

2018-02-13 17:13 GMT+08:00 Greentime Hu <green.hu@...il.com>:
> Hi, all:
>
> ATCPIT100 is often used on the Andes architecture,
> This timer provide 4 PIT channels. Each PIT channel is a
> multi-function timer, can be configured as 32,16,8 bit timers
> or PWM as well.
>
> For system timer it will set channel 1 32-bit timer0 as clock
> source and count downwards until underflow and restart again.
>
> It also set channel 0 32-bit timer0 as clock event and count
> downwards until condition match. It will generate an interrupt
> for handling periodically.
>
> Changes in v7:
>  - Fix atcpit100_clkevt_next_event(), before set reload register,
>    clock source timer shall disable. And re-enable it after the setting.
>    Without this modification, the test case 'clock_nanosleep02' of ltp_20170929
>    will fail.
>
> Changes in v6:
>  - To select TIMER_OF in drivers/clocksource/Kconfig instead of arch/nds32/Kconfig
>  - Refine Kconfig
>  - Update license format to SPDX-License-Identifier
>
>
> Rick Chen (3):
>   clocksource/drivers/atcpit100: Add andestech atcpit100 timer
>   clocksource/drivers/atcpit100: VDSO support
>   dt-bindings: timer: Add andestech atcpit100 timer binding doc
>
>  .../bindings/timer/andestech,atcpit100-timer.txt   |  33 +++
>  drivers/clocksource/Kconfig                        |   9 +
>  drivers/clocksource/Makefile                       |   1 +
>  drivers/clocksource/timer-atcpit100.c              | 266 +++++++++++++++++++++
>  4 files changed, 309 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/timer/andestech,atcpit100-timer.txt
>  create mode 100644 drivers/clocksource/timer-atcpit100.c
>
Hi, Daniel:

Please merge this driver for 4.17 to go along with the nds32
architeture support.
Thank you.