1*8c85bdafSKrzysztof Kozlowski# SPDX-License-Identifier: GPL-2.0 2*8c85bdafSKrzysztof Kozlowski%YAML 1.2 3*8c85bdafSKrzysztof Kozlowski--- 4*8c85bdafSKrzysztof Kozlowski$id: http://devicetree.org/schemas/devfreq/event/samsung,exynos-nocp.yaml# 5*8c85bdafSKrzysztof Kozlowski$schema: http://devicetree.org/meta-schemas/core.yaml# 6*8c85bdafSKrzysztof Kozlowski 7*8c85bdafSKrzysztof Kozlowskititle: Samsung Exynos NoC (Network on Chip) Probe 8*8c85bdafSKrzysztof Kozlowski 9*8c85bdafSKrzysztof Kozlowskimaintainers: 10*8c85bdafSKrzysztof Kozlowski - Chanwoo Choi <cw00.choi@samsung.com> 11*8c85bdafSKrzysztof Kozlowski - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> 12*8c85bdafSKrzysztof Kozlowski 13*8c85bdafSKrzysztof Kozlowskidescription: | 14*8c85bdafSKrzysztof Kozlowski The Samsung Exynos542x SoC has a NoC (Network on Chip) Probe for NoC bus. 15*8c85bdafSKrzysztof Kozlowski NoC provides the primitive values to get the performance data. The packets 16*8c85bdafSKrzysztof Kozlowski that the Network on Chip (NoC) probes detects are transported over the 17*8c85bdafSKrzysztof Kozlowski network infrastructure to observer units. You can configure probes to capture 18*8c85bdafSKrzysztof Kozlowski packets with header or data on the data request response network, or as 19*8c85bdafSKrzysztof Kozlowski traffic debug or statistic collectors. Exynos542x bus has multiple NoC probes 20*8c85bdafSKrzysztof Kozlowski to provide bandwidth information about behavior of the SoC that you can use 21*8c85bdafSKrzysztof Kozlowski while analyzing system performance. 22*8c85bdafSKrzysztof Kozlowski 23*8c85bdafSKrzysztof Kozlowskiproperties: 24*8c85bdafSKrzysztof Kozlowski compatible: 25*8c85bdafSKrzysztof Kozlowski const: samsung,exynos5420-nocp 26*8c85bdafSKrzysztof Kozlowski 27*8c85bdafSKrzysztof Kozlowski clock-names: 28*8c85bdafSKrzysztof Kozlowski items: 29*8c85bdafSKrzysztof Kozlowski - const: nocp 30*8c85bdafSKrzysztof Kozlowski 31*8c85bdafSKrzysztof Kozlowski clocks: 32*8c85bdafSKrzysztof Kozlowski maxItems: 1 33*8c85bdafSKrzysztof Kozlowski 34*8c85bdafSKrzysztof Kozlowski reg: 35*8c85bdafSKrzysztof Kozlowski maxItems: 1 36*8c85bdafSKrzysztof Kozlowski 37*8c85bdafSKrzysztof Kozlowskirequired: 38*8c85bdafSKrzysztof Kozlowski - compatible 39*8c85bdafSKrzysztof Kozlowski - reg 40*8c85bdafSKrzysztof Kozlowski 41*8c85bdafSKrzysztof KozlowskiadditionalProperties: false 42*8c85bdafSKrzysztof Kozlowski 43*8c85bdafSKrzysztof Kozlowskiexamples: 44*8c85bdafSKrzysztof Kozlowski - | 45*8c85bdafSKrzysztof Kozlowski nocp_mem0_0: nocp@10ca1000 { 46*8c85bdafSKrzysztof Kozlowski compatible = "samsung,exynos5420-nocp"; 47*8c85bdafSKrzysztof Kozlowski reg = <0x10ca1000 0x200>; 48*8c85bdafSKrzysztof Kozlowski }; 49