From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt | 26 ++++++++++++++++++++++++--
1 files changed, 24 insertions(+), 2 deletions(-)
diff --git a/kernel/Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt b/kernel/Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt
index 3e36c1d..fb46b49 100644
--- a/kernel/Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt
+++ b/kernel/Documentation/devicetree/bindings/devfreq/event/exynos-ppmu.txt
@@ -10,13 +10,22 @@
to various devfreq devices. The devfreq devices would use the event data when
derterming the current state of each IP.
-Required properties:
+Required properties for PPMU device:
- compatible: Should be "samsung,exynos-ppmu" or "samsung,exynos-ppmu-v2.
- reg: physical base address of each PPMU and length of memory mapped region.
-Optional properties:
+Optional properties for PPMU device:
- clock-names : the name of clock used by the PPMU, "ppmu"
- clocks : phandles for clock specified in "clock-names" property
+
+Required properties for 'events' child node of PPMU device:
+- event-name : the unique event name among PPMU device
+Optional properties for 'events' child node of PPMU device:
+- event-data-type : Define the type of data which shell be counted
+by the counter. You can check include/dt-bindings/pmu/exynos_ppmu.h for
+all possible type, i.e. count read requests, count write data in bytes,
+etc. This field is optional and when it is missing, the driver code
+will use default data type.
Example1 : PPMUv1 nodes in exynos3250.dtsi are listed below.
@@ -145,3 +154,16 @@
reg = <0x104d0000 0x2000>;
status = "disabled";
};
+
+Example4 : 'event-data-type' in exynos4412-ppmu-common.dtsi are listed below.
+
+ &ppmu_dmc0 {
+ status = "okay";
+ events {
+ ppmu_dmc0_3: ppmu-event3-dmc0 {
+ event-name = "ppmu-event3-dmc0";
+ event-data-type = <(PPMU_RO_DATA_CNT |
+ PPMU_WO_DATA_CNT)>;
+ };
+ };
+ };
--
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