Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754698AbbHQJYp (ORCPT ); Mon, 17 Aug 2015 05:24:45 -0400 Received: from mail-pa0-f46.google.com ([209.85.220.46]:36238 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754374AbbHQJYl (ORCPT ); Mon, 17 Aug 2015 05:24:41 -0400 From: Pi-Cheng Chen To: "Rafael J. Wysocki" , Viresh Kumar , Matthias Brugger , Mark Rutland Cc: Michael Turquette , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linaro-kernel@lists.linaro.org, linux-mediatek@lists.infradead.org Subject: [RESEND PATCH 1/3 v6] dt-bindings: mediatek: Add MT8173 CPU DVFS clock bindings Date: Mon, 17 Aug 2015 17:24:23 +0800 Message-Id: <1439803465-19683-2-git-send-email-pi-cheng.chen@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1439803465-19683-1-git-send-email-pi-cheng.chen@linaro.org> References: <1439803465-19683-1-git-send-email-pi-cheng.chen@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3476 Lines: 108 This patch adds the clock and regulator consumer properties part of document for CPU DVFS clocks on Mediatek MT8173 SoC. Signed-off-by: Pi-Cheng Chen Acked-by: Michael Turquette Acked-by: Viresh Kumar --- .../devicetree/bindings/clock/mt8173-cpu-dvfs.txt | 83 ++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/mt8173-cpu-dvfs.txt diff --git a/Documentation/devicetree/bindings/clock/mt8173-cpu-dvfs.txt b/Documentation/devicetree/bindings/clock/mt8173-cpu-dvfs.txt new file mode 100644 index 0000000..52b457c --- /dev/null +++ b/Documentation/devicetree/bindings/clock/mt8173-cpu-dvfs.txt @@ -0,0 +1,83 @@ +Device Tree Clock bindins for CPU DVFS of Mediatek MT8173 SoC + +Required properties: +- clocks: A list of phandle + clock-specifier pairs for the clocks listed in clock names. +- clock-names: Should contain the following: + "cpu" - The multiplexer for clock input of CPU cluster. + "intermediate" - A parent of "cpu" clock which is used as "intermediate" clock + source (usually MAINPLL) when the original CPU PLL is under + transition and not stable yet. + Please refer to Documentation/devicetree/bindings/clk/clock-bindings.txt for + generic clock consumer properties. +- proc-supply: Regulator for Vproc of CPU cluster. + +Optional properties: +- sram-supply: Regulator for Vsram of CPU cluster. When present, the cpufreq driver + needs to do "voltage tracking" to step by step scale up/down Vproc and + Vsram to fit SoC specific needs. When absent, the voltage scaling + flow is handled by hardware, hence no software "voltage tracking" is + needed. + +Example: +-------- + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x000>; + enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; + clocks = <&infracfg CLK_INFRA_CA53SEL>, + <&apmixedsys CLK_APMIXED_MAINPLL>; + clock-names = "cpu", "intermediate"; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a53"; + reg = <0x001>; + enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; + clocks = <&infracfg CLK_INFRA_CA53SEL>, + <&apmixedsys CLK_APMIXED_MAINPLL>; + clock-names = "cpu", "intermediate"; + }; + + cpu2: cpu@100 { + device_type = "cpu"; + compatible = "arm,cortex-a57"; + reg = <0x100>; + enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; + clocks = <&infracfg CLK_INFRA_CA57SEL>, + <&apmixedsys CLK_APMIXED_MAINPLL>; + clock-names = "cpu", "intermediate"; + }; + + cpu3: cpu@101 { + device_type = "cpu"; + compatible = "arm,cortex-a57"; + reg = <0x101>; + enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; + clocks = <&infracfg CLK_INFRA_CA57SEL>, + <&apmixedsys CLK_APMIXED_MAINPLL>; + clock-names = "cpu", "intermediate"; + }; + + &cpu0 { + proc-supply = <&mt6397_vpca15_reg>; + }; + + &cpu1 { + proc-supply = <&mt6397_vpca15_reg>; + }; + + &cpu2 { + proc-supply = <&da9211_vcpu_reg>; + sram-supply = <&mt6397_vsramca7_reg>; + }; + + &cpu3 { + proc-supply = <&da9211_vcpu_reg>; + sram-supply = <&mt6397_vsramca7_reg>; + }; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/