linux-kernel - Re: [PATCH v3 1/4] include: dt-bindings: add Performance Monitoring Unit for Exynos

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Date:   Tue, 30 Apr 2019 13:56:23 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Lukasz Luba <l.luba@...tner.samsung.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     b.zolnierkie@...sung.com, krzk@...nel.org, robh+dt@...nel.org,
        mark.rutland@....com, kyungmin.park@...sung.com,
        m.szyprowski@...sung.com, s.nawrocki@...sung.com,
        myungjoo.ham@...sung.com, kgene@...nel.org,
        willy.mh.wolff.ml@...il.com
Subject: Re: [PATCH v3 1/4] include: dt-bindings: add Performance Monitoring
 Unit for Exynos

Hi,

I agree of this patch. But, I add the minor comments.

If you edit them according to my comment, feel free to add my following tag:
Acked-by: Chanwoo Choi <cw00.choi@...sung.com>

On 19. 4. 19. 오후 10:48, Lukasz Luba wrote:
> This patch add support of a new feature which can be used in DT:
> Performance Monitoring Unit with defined event data type.
> In this patch the event data types are defined for Exynos PPMU.
> The patch also updates the MAINTAINERS file accordingly and
> adds the header file to devfreq event subsystem.
> 
> Signed-off-by: Lukasz Luba <l.luba@...tner.samsung.com>
> ---
>  MAINTAINERS                           |  1 +
>  include/dt-bindings/pmu/exynos_ppmu.h | 26 ++++++++++++++++++++++++++
>  2 files changed, 27 insertions(+)
>  create mode 100644 include/dt-bindings/pmu/exynos_ppmu.h
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 3671fde..1ba4b9b 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -4560,6 +4560,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mzx/devfreq.git
>  S:	Supported
>  F:	drivers/devfreq/event/
>  F:	drivers/devfreq/devfreq-event.c
> +F:	include/dt-bindings/pmu/exynos_ppmu.h
>  F:	include/linux/devfreq-event.h
>  F:	Documentation/devicetree/bindings/devfreq/event/
>  
> diff --git a/include/dt-bindings/pmu/exynos_ppmu.h b/include/dt-bindings/pmu/exynos_ppmu.h
> new file mode 100644
> index 0000000..08fdce9
> --- /dev/null
> +++ b/include/dt-bindings/pmu/exynos_ppmu.h
> @@ -0,0 +1,26 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Samsung Exynos PPMU event types for counting in regs
> + *
> + * Copyright (c) 2019, Samsung

Mabye, "Samsung Electronics" instead of 'Samsung'.

> + * Author: Lukasz Luba <l.luba@...tner.samsung.com>
> + */
> +
> +#ifndef __DT_BINDINGS_PMU_EXYNOS_PPMU_H
> +#define __DT_BINDINGS_PMU_EXYNOS_PPMU_H
> +
> +

Remove unneeded blank line.

> +#define PPMU_RO_BUSY_CYCLE_CNT		0x0
> +#define PPMU_WO_BUSY_CYCLE_CNT		0x1
> +#define PPMU_RW_BUSY_CYCLE_CNT		0x2
> +#define PPMU_RO_REQUEST_CNT		0x3
> +#define PPMU_WO_REQUEST_CNT		0x4
> +#define PPMU_RO_DATA_CNT		0x5
> +#define PPMU_WO_DATA_CNT		0x6
> +#define PPMU_RO_LATENCY			0x12
> +#define PPMU_WO_LATENCY			0x16
> +#define PPMU_V2_RO_DATA_CNT		0x4
> +#define PPMU_V2_WO_DATA_CNT		0x5
> +#define PPMU_V2_EVT3_RW_DATA_CNT	0x22
> +
> +#endif
> 


-- 
Best Regards,
Chanwoo Choi
Samsung Electronics