[v9,15/15] dt-bindings: cpufreq: Document operating-points-v2-krait-cpu

Message ID	1520347148-27852-16-git-send-email-sricharan@codeaurora.org (mailing list archive)
State	Changes Requested, archived
Headers	show Return-Path: <linux-clk-owner@kernel.org> sender: sricharan@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 810F860FEA; Tue, 6 Mar 2018 14:40:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 810F860FEA From: Sricharan R <sricharan@codeaurora.org> To: robh@kernel.org, viresh.kumar@linaro.org, mark.rutland@arm.com, mturquette@baylibre.com, sboyd@codeaurora.org, linux@armlinux.org.uk, andy.gross@linaro.org, david.brown@linaro.org, rjw@rjwysocki.net, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-pm@vger.kernel.org, linux@arm.linux.org.uk Cc: sricharan@codeaurora.org Subject: [PATCH v9 15/15] dt-bindings: cpufreq: Document operating-points-v2-krait-cpu Date: Tue, 6 Mar 2018 20:09:08 +0530 Message-Id: <1520347148-27852-16-git-send-email-sricharan@codeaurora.org> In-Reply-To: <1520347148-27852-1-git-send-email-sricharan@codeaurora.org> References: <1520347148-27852-1-git-send-email-sricharan@codeaurora.org> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk

diff --git a/Documentation/devicetree/bindings/cpufreq/krait-cpufreq.txt b/Documentation/devicetree/bindings/cpufreq/krait-cpufreq.txt new file mode 100644 index 0000000..7b083c7 --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/krait-cpufreq.txt @@ -0,0 +1,363 @@ +QCOM KRAIT CPUFreq and OPP bindings +=================================== + +In Certain QCOM SoCs like ipq8064, apq8064, msm8960, msm8974 +that has KRAIT processors the voltage value of each OPP varies +based on the silicon variant in use. Qualcomm Process Voltage Scaling Tables +defines the voltage and current value based on the speed/pvs/version +combination blown in the efuse. The qcom-cpufreq driver reads the efuse +value from the SoC to provide the OPP framework with required information. +This is used to determine the voltage and current value for each OPP of +operating-points-v2 table when it is parsed by the OPP framework. + +Required properties: +-------------------- +In 'cpus' nodes: +- operating-points-v2: Phandle to the operating-points-v2 table to use. + +In 'operating-points-v2' table: +- compatible: Should be + - 'operating-points-v2-krait-cpu' for ipq8064, apq8064, msm8960, + msm8974. +- nvmem-cells: A phandle pointing to a nvmem-cells node representing the + efuse registers that has information about the + speedbin/pvs/version that is used to select the right + voltage/current value pair. Note that the length field of the + nvmem-cell is used to differentiate between format 'A' or 'B' + efuse settings. len of '4' bytes is for format 'A' and '8' + bytes for format 'B'. Please refer the for nvmem-cells + bindings Documentation/devicetree/bindings/nvmem/nvmem.txt + and also examples below for both the cases. +Example 1: +--------- + +/* For arch/arm/boot/dts/apq8064.dtsi --> format 'A' */ +cpus { + #address-cells = <1>; + #size-cells = <0>; + + CPU0: cpu@0 { + compatible = "qcom,krait"; + enable-method = "qcom,kpss-acc-v1"; + device_type = "cpu"; + reg = <0>; + next-level-cache = <&L2>; + qcom,acc = <&acc0>; + qcom,saw = <&saw0>; + cpu-idle-states = <&CPU_SPC>; + operating-points-v2 = <&cpu_opp_table>; + }; +}; + +qfprom: qfprom@700000 { + compatible = "qcom,qfprom"; + reg = <0x00700000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + pvs_efuse: pvs { + reg = <0xc0 0x4>; + }; +}; + +cpu_opp_table: opp-table { + compatible = "operating-points-v2-krait-cpu"; + nvmem-cells = <&pvs_efuse>; + + /* + * Missing opp-shared property means CPUs switch DVFS states + * independently. + */ + + opp-918000000 { + opp-hz = /bits/ 64 <918000000>; + opp-microvolt-speed0-pvs0-v0 = <1100000>; + opp-microvolt-speed0-pvs1-v0 = <1050000>; + opp-microvolt-speed0-pvs3-v0 = <1000000>; + opp-microvolt-speed0-pvs4-v0 = <975000>; + opp-microvolt-speed1-pvs0-v0 = <1025000>; + opp-microvolt-speed1-pvs1-v0 = <1000000>; + opp-microvolt-speed1-pvs2-v0 = <950000>; + opp-microvolt-speed1-pvs3-v0 = <925000>; + opp-microvolt-speed1-pvs4-v0 = <900000>; + opp-microvolt-speed1-pvs5-v0 = <900000>; + opp-microvolt-speed1-pvs6-v0 = <900000>; + opp-microvolt-speed2-pvs0-v0 = <975000>; + opp-microvolt-speed2-pvs1-v0 = <950000>; + opp-microvolt-speed2-pvs2-v0 = <925000>; + opp-microvolt-speed2-pvs3-v0 = <912500>; + opp-microvolt-speed2-pvs4-v0 = <900000>; + opp-microvolt-speed2-pvs5-v0 = <900000>; + opp-microvolt-speed2-pvs6-v0 = <900000>; + opp-microvolt-speed14-pvs0-v0 = <1025000>; + opp-microvolt-speed14-pvs1-v0 = <1000000>; + opp-microvolt-speed14-pvs2-v0 = <950000>; + opp-microvolt-speed14-pvs3-v0 = <925000>; + opp-microvolt-speed14-pvs4-v0 = <900000>; + opp-microvolt-speed14-pvs5-v0 = <900000>; + opp-microvolt-speed14-pvs6-v0 = <900000>; + }; + + opp-810000000 { + opp-hz = /bits/ 64 <810000000>; + opp-microvolt-speed0-pvs0-v0 = <1075000>; + opp-microvolt-speed0-pvs1-v0 = <1025000>; + opp-microvolt-speed0-pvs3-v0 = <975000>; + opp-microvolt-speed0-pvs3-v0 = <962500>; + opp-microvolt-speed1-pvs0-v0 = <1000000>; + opp-microvolt-speed1-pvs1-v0 = <975000>; + opp-microvolt-speed1-pvs2-v0 = <937500>; + opp-microvolt-speed1-pvs3-v0 = <900000>; + opp-microvolt-speed1-pvs4-v0 = <887500>; + opp-microvolt-speed1-pvs5-v0 = <887500>; + opp-microvolt-speed1-pvs6-v0 = <887500>; + opp-microvolt-speed2-pvs0-v0 = <962500>; + opp-microvolt-speed2-pvs1-v0 = <937500>; + opp-microvolt-speed2-pvs2-v0 = <912500>; + opp-microvolt-speed2-pvs3-v0 = <900000>; + opp-microvolt-speed2-pvs4-v0 = <887500>; + opp-microvolt-speed2-pvs5-v0 = <887500>; + opp-microvolt-speed2-pvs6-v0 = <887500>; + opp-microvolt-speed14-pvs0-v0 = <1000000>; + opp-microvolt-speed14-pvs1-v0 = <975000>; + opp-microvolt-speed14-pvs2-v0 = <937500>; + opp-microvolt-speed14-pvs3-v0 = <900000>; + opp-microvolt-speed14-pvs4-v0 = <887500>; + opp-microvolt-speed14-pvs5-v0 = <887500>; + opp-microvolt-speed14-pvs6-v0 = <887500>; + }; + + opp-702000000 { + opp-hz = /bits/ 64 <702000000>; + opp-microvolt-speed0-pvs0-v0 = <1025000>; + opp-microvolt-speed0-pvs1-v0 = <975000>; + opp-microvolt-speed0-pvs3-v0 = <925000>; + opp-microvolt-speed0-pvs3-v0 = <925000>; + opp-microvolt-speed1-pvs0-v0 = <962500>; + opp-microvolt-speed1-pvs1-v0 = <962500>; + opp-microvolt-speed1-pvs2-v0 = <925000>; + opp-microvolt-speed1-pvs3-v0 = <900000>; + opp-microvolt-speed1-pvs4-v0 = <875000>; + opp-microvolt-speed1-pvs5-v0 = <875000>; + opp-microvolt-speed1-pvs6-v0 = <875000>; + opp-microvolt-speed2-pvs0-v0 = <950000>; + opp-microvolt-speed2-pvs1-v0 = <925000>; + opp-microvolt-speed2-pvs2-v0 = <900000>; + opp-microvolt-speed2-pvs3-v0 = 900000>; + opp-microvolt-speed2-pvs4-v0 = <875000>; + opp-microvolt-speed2-pvs5-v0 = <875000>; + opp-microvolt-speed2-pvs6-v0 = <875000>; + opp-microvolt-speed14-pvs0-v0 = <962500>; + opp-microvolt-speed14-pvs1-v0 = <962500>; + opp-microvolt-speed14-pvs2-v0 = <925000>; + opp-microvolt-speed14-pvs3-v0 = <900000>; + opp-microvolt-speed14-pvs4-v0 = <875000>; + opp-microvolt-speed14-pvs5-v0 = <875000>; + opp-microvolt-speed14-pvs6-v0 = <875000>; + }; + + opp-594000000 { + opp-hz = /bits/ 64 <594000000>; + opp-microvolt-speed0-pvs0-v0 = <1000000>; + opp-microvolt-speed0-pvs1-v0 = <950000>; + opp-microvolt-speed0-pvs3-v0 = <900000>; + opp-microvolt-speed0-pvs3-v0 = <900000>; + opp-microvolt-speed1-pvs0-v0 = <950000>; + opp-microvolt-speed1-pvs1-v0 = <950000>; + opp-microvolt-speed1-pvs2-v0 = <925000>; + opp-microvolt-speed1-pvs3-v0 = <900000>; + opp-microvolt-speed1-pvs4-v0 = <875000>; + opp-microvolt-speed1-pvs5-v0 = <875000>; + opp-microvolt-speed1-pvs6-v0 = <875000>; + opp-microvolt-speed2-pvs0-v0 = <950000>; + opp-microvolt-speed2-pvs1-v0 = <925000>; + opp-microvolt-speed2-pvs2-v0 = <900000>; + opp-microvolt-speed2-pvs3-v0 = <900000>; + opp-microvolt-speed2-pvs4-v0 = <875000>; + opp-microvolt-speed2-pvs5-v0 = <875000>; + opp-microvolt-speed2-pvs6-v0 = <875000>; + opp-microvolt-speed14-pvs0-v0 = <950000>; + opp-microvolt-speed14-pvs1-v0 = <950000>; + opp-microvolt-speed14-pvs2-v0 = <925000>; + opp-microvolt-speed14-pvs3-v0 = <900000>; + opp-microvolt-speed14-pvs4-v0 = <875000>; + opp-microvolt-speed14-pvs5-v0 = <875000>; + opp-microvolt-speed14-pvs6-v0 = <875000>; + }; + + opp-486000000 { + opp-hz = /bits/ 64 <486000000>; + opp-microvolt-speed0-pvs0-v0 = <975000>; + opp-microvolt-speed0-pvs1-v0 = <925000>; + opp-microvolt-speed0-pvs3-v0 = <875000>; + opp-microvolt-speed0-pvs3-v0 = <875000>; + opp-microvolt-speed1-pvs0-v0 = <950000>; + opp-microvolt-speed1-pvs1-v0 = <950000>; + opp-microvolt-speed1-pvs2-v0 = <925000>; + opp-microvolt-speed1-pvs3-v0 = <900000>; + opp-microvolt-speed1-pvs4-v0 = <875000>; + opp-microvolt-speed1-pvs5-v0 = <875000>; + opp-microvolt-speed1-pvs6-v0 = <875000>; + opp-microvolt-speed2-pvs0-v0 = <950000>; + opp-microvolt-speed2-pvs1-v0 = <925000>; + opp-microvolt-speed2-pvs2-v0 = <900000>; + opp-microvolt-speed2-pvs3-v0 = <900000>; + opp-microvolt-speed2-pvs4-v0 = <875000>; + opp-microvolt-speed2-pvs5-v0 = <875000>; + opp-microvolt-speed2-pvs6-v0 = <875000>; + opp-microvolt-speed14-pvs0-v0 = <950000>; + opp-microvolt-speed14-pvs1-v0 = <950000>; + opp-microvolt-speed14-pvs2-v0 = <925000>; + opp-microvolt-speed14-pvs3-v0 = <900000>; + opp-microvolt-speed14-pvs4-v0 = <875000>; + opp-microvolt-speed14-pvs5-v0 = <875000>; + opp-microvolt-speed14-pvs6-v0 = <875000>; + }; + + opp-384000000 { + opp-hz = /bits/ 64 <384000000>; + opp-microvolt-speed0-pvs0-v0 = <950000>; + opp-microvolt-speed0-pvs1-v0 = <900000>; + opp-microvolt-speed0-pvs3-v0 = <850000>; + opp-microvolt-speed0-pvs3-v0 = <850000>; + opp-microvolt-speed1-pvs0-v0 = <950000>; + opp-microvolt-speed1-pvs1-v0 = <950000>; + opp-microvolt-speed1-pvs2-v0 = <925000>; + opp-microvolt-speed1-pvs3-v0 = <900000>; + opp-microvolt-speed1-pvs4-v0 = <875000>; + opp-microvolt-speed1-pvs5-v0 = <875000>; + opp-microvolt-speed1-pvs6-v0 = <875000>; + opp-microvolt-speed2-pvs0-v0 = <950000>; + opp-microvolt-speed2-pvs1-v0 = <925000>; + opp-microvolt-speed2-pvs2-v0 = <900000>; + opp-microvolt-speed2-pvs3-v0 = <900000>; + opp-microvolt-speed2-pvs4-v0 = <875000>; + opp-microvolt-speed2-pvs5-v0 = <875000>; + opp-microvolt-speed2-pvs6-v0 = <875000>; + opp-microvolt-speed14-pvs0-v0 = <950000>; + opp-microvolt-speed14-pvs1-v0 = <950000>; + opp-microvolt-speed14-pvs2-v0 = <925000>; + opp-microvolt-speed14-pvs3-v0 = <900000>; + opp-microvolt-speed14-pvs4-v0 = <875000>; + opp-microvolt-speed14-pvs5-v0 = <875000>; + opp-microvolt-speed14-pvs6-v0 = <875000>; + }; +}; + +EXAMPLE 2: +--------- +/* For arch/arm/boot/dts/qcom-msm8974.dtsi--> format 'B' */ + +qfprom: qfprom@700000 { + compatible = "qcom,qfprom"; + reg = <0x00700000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + pvs_efuse: pvs { + reg = <0xc0 0x8>; + }; +}; + +cpu_opp_table: opp-table { + compatible = "operating-points-v2-krait-cpu"; + nvmem-cells = <&pvs_efuse>; + + /* + * Missing opp-shared property means CPUs switch DVFS states + * independently. + */ + opp-960000000 { + opp-hz = /bits/ 64 <960000000>; + opp-microvolt-speed0-pvs0-v0 = <915000>; + opp-microvolt-speed0-pvs1-v0 = <895000>; + opp-microvolt-speed0-pvs2-v0 = <875000>; + opp-microvolt-speed0-pvs3-v0 = <860000>; + opp-microvolt-speed0-pvs4-v0 = <850000>; + opp-microvolt-speed0-pvs5-v0 = <840000>; + opp-microvolt-speed0-pvs6-v0 = <830000>; + opp-microvolt-speed2-pvs0-v0 = <875000>; + opp-microvolt-speed2-pvs1-v0 = <860000>; + opp-microvolt-speed2-pvs2-v0 = <845000>; + opp-microvolt-speed2-pvs3-v0 = <830000>; + opp-microvolt-speed2-pvs4-v0 = <820000>; + opp-microvolt-speed2-pvs5-v0 = <810000>; + opp-microvolt-speed2-pvs6-v0 = <800000>; + opp-microvolt-speed1-pvs0-v0 = <840000>; + opp-microvolt-speed1-pvs1-v0 = <825000>; + opp-microvolt-speed1-pvs2-v0 = <810000>; + opp-microvolt-speed1-pvs3-v0 = <795000>; + opp-microvolt-speed1-pvs4-v0 = <785000>; + opp-microvolt-speed1-pvs5-v0 = <775000>; + opp-microvolt-speed1-pvs6-v0 = <765000>; + + opp-microamp-speed0-pvs0-v0 = <252>; + opp-microamp-speed0-pvs1-v0 = <252>; + opp-microamp-speed0-pvs2-v0 = <252>; + opp-microamp-speed0-pvs3-v0 = <252>; + opp-microamp-speed0-pvs4-v0 = <252>; + opp-microamp-speed0-pvs5-v0 = <252>; + opp-microamp-speed0-pvs6-v0 = <252>; + opp-microamp-speed2-pvs0-v0 = <245>; + opp-microamp-speed2-pvs1-v0 = <245>; + opp-microamp-speed2-pvs2-v0 = <245>; + opp-microamp-speed2-pvs3-v0 = <245>; + opp-microamp-speed2-pvs4-v0 = <245>; + opp-microamp-speed2-pvs5-v0 = <245>; + opp-microamp-speed2-pvs6-v0 = <245>; + opp-microamp-speed1-pvs0-v0 = <242>; + opp-microamp-speed1-pvs1-v0 = <242>; + opp-microamp-speed1-pvs2-v0 = <242>; + opp-microamp-speed1-pvs3-v0 = <242>; + opp-microamp-speed1-pvs4-v0 = <242>; + opp-microamp-speed1-pvs5-v0 = <242>; + opp-microamp-speed1-pvs6-v0 = <242>; + }; + + opp-883200000 { + opp-hz = /bits/ 64 <883200000>; + opp-microvolt-speed0-pvs0-v0 = <900000>; + opp-microvolt-speed0-pvs1-v0 = <885000>; + opp-microvolt-speed0-pvs2-v0 = <865000>; + opp-microvolt-speed0-pvs3-v0 = <850000>; + opp-microvolt-speed0-pvs4-v0 = <840000>; + opp-microvolt-speed0-pvs5-v0 = <830000>; + opp-microvolt-speed0-pvs6-v0 = <820000>; + opp-microvolt-speed2-pvs0-v0 = <865000>; + opp-microvolt-speed2-pvs1-v0 = <850000>; + opp-microvolt-speed2-pvs2-v0 = <835000>; + opp-microvolt-speed2-pvs3-v0 = <820000>; + opp-microvolt-speed2-pvs4-v0 = <810000>; + opp-microvolt-speed2-pvs5-v0 = <800000>; + opp-microvolt-speed2-pvs6-v0 = <790000>; + opp-microvolt-speed1-pvs0-v0 = <830000>; + opp-microvolt-speed1-pvs1-v0 = <815000>; + opp-microvolt-speed1-pvs2-v0 = <800000>; + opp-microvolt-speed1-pvs3-v0 = <785000>; + opp-microvolt-speed1-pvs4-v0 = <775000>; + opp-microvolt-speed1-pvs5-v0 = <765000>; + opp-microvolt-speed1-pvs6-v0 = <755000>; + + opp-microamp-speed0-pvs0-v0 = <229>; + opp-microamp-speed0-pvs1-v0 = <229>; + opp-microamp-speed0-pvs2-v0 = <229>; + opp-microamp-speed0-pvs3-v0 = <229>; + opp-microamp-speed0-pvs4-v0 = <229>; + opp-microamp-speed0-pvs5-v0 = <229>; + opp-microamp-speed0-pvs6-v0 = <229>; + opp-microamp-speed2-pvs0-v0 = <223>; + opp-microamp-speed2-pvs1-v0 = <223>; + opp-microamp-speed2-pvs2-v0 = <223>; + opp-microamp-speed2-pvs3-v0 = <223>; + opp-microamp-speed2-pvs4-v0 = <223>; + opp-microamp-speed2-pvs5-v0 = <223>; + opp-microamp-speed2-pvs6-v0 = <223>; + opp-microamp-speed1-pvs0-v0 = <221>; + opp-microamp-speed1-pvs1-v0 = <221>; + opp-microamp-speed1-pvs2-v0 = <221>; + opp-microamp-speed1-pvs3-v0 = <221>; + opp-microamp-speed1-pvs4-v0 = <221>; + opp-microamp-speed1-pvs5-v0 = <221>; + opp-microamp-speed1-pvs6-v0 = <221>; + }; +};

[v9,15/15] dt-bindings: cpufreq: Document operating-points-v2-krait-cpu

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