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include: dt-bindings: add Performance Monitoring Unit for Exynos 

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.

Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Lukasz Luba 2019-06-05 11:12:32 +02:00 committed by Chanwoo Choi
parent a99d8080aa
commit fcbd8037f7
2 changed files with 26 additions and 0 deletions
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1
MAINTAINERS
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@ -4778,6 +4778,7 @@ 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/

25
include/dt-bindings/pmu/exynos_ppmu.h Normal file
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@ -0,0 +1,25 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Samsung Exynos PPMU event types for counting in regs
*
* Copyright (c) 2019, Samsung Electronics
* Author: Lukasz Luba <l.luba@partner.samsung.com>
*/
#ifndef __DT_BINDINGS_PMU_EXYNOS_PPMU_H
#define __DT_BINDINGS_PMU_EXYNOS_PPMU_H
#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