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>

diff --git a/MAINTAINERS b/MAINTAINERS
index cba1095..2bf811b 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -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/
 

diff --git a/include/dt-bindings/pmu/exynos_ppmu.h b/include/dt-bindings/pmu/exynos_ppmu.h
new file mode 100644 (file)
index 0000000..8724abe
--- /dev/null
+++ b/include/dt-bindings/pmu/exynos_ppmu.h
@@ -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