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Message-ID: <ca58310b-c4f3-2912-a496-2826ff3df16b@codeaurora.org>
Date: Tue, 17 Dec 2019 16:01:00 +0530
From: Rajendra Nayak <rnayak@...eaurora.org>
To: Sibi Sankar <sibis@...eaurora.org>, bjorn.andersson@...aro.org,
robh+dt@...nel.org
Cc: agross@...nel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
mark.rutland@....com, swboyd@...omium.org, dianders@...omium.org
Subject: Re: [PATCH 1/2] dt-bindings: power: rpmpd: Convert rpmpd bindings to
yaml
On 12/16/2019 5:25 PM, Sibi Sankar wrote:
> Convert RPM/RPMH power-domain bindings to yaml.
>
> Signed-off-by: Sibi Sankar <sibis@...eaurora.org>
> ---
Reviewed-by: Rajendra Nayak <rnayak@...eaurora.org>
> .../devicetree/bindings/power/qcom,rpmpd.txt | 150 ----------------
> .../devicetree/bindings/power/qcom,rpmpd.yaml | 170 ++++++++++++++++++
> 2 files changed, 170 insertions(+), 150 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/power/qcom,rpmpd.txt
> create mode 100644 Documentation/devicetree/bindings/power/qcom,rpmpd.yaml
>
> diff --git a/Documentation/devicetree/bindings/power/qcom,rpmpd.txt b/Documentation/devicetree/bindings/power/qcom,rpmpd.txt
> deleted file mode 100644
> index 6346d00b1b400..0000000000000
> --- a/Documentation/devicetree/bindings/power/qcom,rpmpd.txt
> +++ /dev/null
> @@ -1,150 +0,0 @@
> -Qualcomm RPM/RPMh Power domains
> -
> -For RPM/RPMh Power domains, we communicate a performance state to RPM/RPMh
> -which then translates it into a corresponding voltage on a rail
> -
> -Required Properties:
> - - compatible: Should be one of the following
> - * qcom,msm8976-rpmpd: RPM Power domain for the msm8976 family of SoC
> - * qcom,msm8996-rpmpd: RPM Power domain for the msm8996 family of SoC
> - * qcom,msm8998-rpmpd: RPM Power domain for the msm8998 family of SoC
> - * qcom,qcs404-rpmpd: RPM Power domain for the qcs404 family of SoC
> - * qcom,sc7180-rpmhpd: RPMh Power domain for the sc7180 family of SoC
> - * qcom,sdm845-rpmhpd: RPMh Power domain for the sdm845 family of SoC
> - * qcom,sm8150-rpmhpd: RPMh Power domain for the sm8150 family of SoC
> - - #power-domain-cells: number of cells in Power domain specifier
> - must be 1.
> - - operating-points-v2: Phandle to the OPP table for the Power domain.
> - Refer to Documentation/devicetree/bindings/power/power_domain.txt
> - and Documentation/devicetree/bindings/opp/opp.txt for more details
> -
> -Refer to <dt-bindings/power/qcom-rpmpd.h> for the level values for
> -various OPPs for different platforms as well as Power domain indexes
> -
> -Example: rpmh power domain controller and OPP table
> -
> -#include <dt-bindings/power/qcom-rpmhpd.h>
> -
> -opp-level values specified in the OPP tables for RPMh power domains
> -should use the RPMH_REGULATOR_LEVEL_* constants from
> -<dt-bindings/power/qcom-rpmhpd.h>
> -
> - rpmhpd: power-controller {
> - compatible = "qcom,sdm845-rpmhpd";
> - #power-domain-cells = <1>;
> - operating-points-v2 = <&rpmhpd_opp_table>;
> -
> - rpmhpd_opp_table: opp-table {
> - compatible = "operating-points-v2";
> -
> - rpmhpd_opp_ret: opp1 {
> - opp-level = <RPMH_REGULATOR_LEVEL_RETENTION>;
> - };
> -
> - rpmhpd_opp_min_svs: opp2 {
> - opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
> - };
> -
> - rpmhpd_opp_low_svs: opp3 {
> - opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> - };
> -
> - rpmhpd_opp_svs: opp4 {
> - opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
> - };
> -
> - rpmhpd_opp_svs_l1: opp5 {
> - opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
> - };
> -
> - rpmhpd_opp_nom: opp6 {
> - opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
> - };
> -
> - rpmhpd_opp_nom_l1: opp7 {
> - opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
> - };
> -
> - rpmhpd_opp_nom_l2: opp8 {
> - opp-level = <RPMH_REGULATOR_LEVEL_NOM_L2>;
> - };
> -
> - rpmhpd_opp_turbo: opp9 {
> - opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
> - };
> -
> - rpmhpd_opp_turbo_l1: opp10 {
> - opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>;
> - };
> - };
> - };
> -
> -Example: rpm power domain controller and OPP table
> -
> - rpmpd: power-controller {
> - compatible = "qcom,msm8996-rpmpd";
> - #power-domain-cells = <1>;
> - operating-points-v2 = <&rpmpd_opp_table>;
> -
> - rpmpd_opp_table: opp-table {
> - compatible = "operating-points-v2";
> -
> - rpmpd_opp_low: opp1 {
> - opp-level = <1>;
> - };
> -
> - rpmpd_opp_ret: opp2 {
> - opp-level = <2>;
> - };
> -
> - rpmpd_opp_svs: opp3 {
> - opp-level = <3>;
> - };
> -
> - rpmpd_opp_normal: opp4 {
> - opp-level = <4>;
> - };
> -
> - rpmpd_opp_high: opp5 {
> - opp-level = <5>;
> - };
> -
> - rpmpd_opp_turbo: opp6 {
> - opp-level = <6>;
> - };
> - };
> - };
> -
> -Example: Client/Consumer device using OPP table
> -
> - leaky-device0@...50000 {
> - compatible = "foo,i-leak-current";
> - reg = <0x12350000 0x1000>;
> - power-domains = <&rpmhpd SDM845_MX>;
> - operating-points-v2 = <&leaky_opp_table>;
> - };
> -
> -
> - leaky_opp_table: opp-table {
> - compatible = "operating-points-v2";
> -
> - opp1 {
> - opp-hz = /bits/ 64 <144000>;
> - required-opps = <&rpmhpd_opp_low>;
> - };
> -
> - opp2 {
> - opp-hz = /bits/ 64 <400000>;
> - required-opps = <&rpmhpd_opp_ret>;
> - };
> -
> - opp3 {
> - opp-hz = /bits/ 64 <20000000>;
> - required-opps = <&rpmpd_opp_svs>;
> - };
> -
> - opp4 {
> - opp-hz = /bits/ 64 <25000000>;
> - required-opps = <&rpmpd_opp_normal>;
> - };
> - };
> diff --git a/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml b/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml
> new file mode 100644
> index 0000000000000..4aebf024e4427
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml
> @@ -0,0 +1,170 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/qcom,rpmpd.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm RPM/RPMh Power domains
> +
> +maintainers:
> + - Rajendra Nayak <rnayak@...eaurora.org>
> +
> +description:
> + For RPM/RPMh Power domains, we communicate a performance state to RPM/RPMh
> + which then translates it into a corresponding voltage on a rail
> +
> +properties:
> + compatible:
> + enum:
> + - qcom,msm8976-rpmpd
> + - qcom,msm8996-rpmpd
> + - qcom,msm8998-rpmpd
> + - qcom,qcs404-rpmpd
> + - qcom,sc7180-rpmhpd
> + - qcom,sdm845-rpmhpd
> + - qcom,sm8150-rpmhpd
> +
> + '#power-domain-cells':
> + const: 1
> +
> + operating-points-v2: true
> +
> + opp-table:
> + type: object
> +
> +required:
> + - compatible
> + - '#power-domain-cells'
> + - operating-points-v2
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> +
> + // Example 1 (rpmh power domain controller and OPP table):
> +
> + #include <dt-bindings/power/qcom-rpmpd.h>
> +
> + rpmhpd: power-controller {
> + compatible = "qcom,sdm845-rpmhpd";
> + #power-domain-cells = <1>;
> + operating-points-v2 = <&rpmhpd_opp_table>;
> +
> + rpmhpd_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + rpmhpd_opp_ret: opp1 {
> + opp-level = <RPMH_REGULATOR_LEVEL_RETENTION>;
> + };
> +
> + rpmhpd_opp_min_svs: opp2 {
> + opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
> + };
> +
> + rpmhpd_opp_low_svs: opp3 {
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + };
> +
> + rpmhpd_opp_svs: opp4 {
> + opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
> + };
> +
> + rpmhpd_opp_svs_l1: opp5 {
> + opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
> + };
> +
> + rpmhpd_opp_nom: opp6 {
> + opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
> + };
> +
> + rpmhpd_opp_nom_l1: opp7 {
> + opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
> + };
> +
> + rpmhpd_opp_nom_l2: opp8 {
> + opp-level = <RPMH_REGULATOR_LEVEL_NOM_L2>;
> + };
> +
> + rpmhpd_opp_turbo: opp9 {
> + opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
> + };
> +
> + rpmhpd_opp_turbo_l1: opp10 {
> + opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>;
> + };
> + };
> + };
> +
> + - |
> +
> + // Example 2 (rpm power domain controller and OPP table):
> +
> + rpmpd: power-controller {
> + compatible = "qcom,msm8996-rpmpd";
> + #power-domain-cells = <1>;
> + operating-points-v2 = <&rpmpd_opp_table>;
> +
> + rpmpd_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + rpmpd_opp_low: opp1 {
> + opp-level = <1>;
> + };
> +
> + rpmpd_opp_ret: opp2 {
> + opp-level = <2>;
> + };
> +
> + rpmpd_opp_svs: opp3 {
> + opp-level = <3>;
> + };
> +
> + rpmpd_opp_normal: opp4 {
> + opp-level = <4>;
> + };
> +
> + rpmpd_opp_high: opp5 {
> + opp-level = <5>;
> + };
> +
> + rpmpd_opp_turbo: opp6 {
> + opp-level = <6>;
> + };
> + };
> + };
> +
> + - |
> +
> + // Example 3 (Client/Consumer device using OPP table):
> +
> + leaky-device0@...50000 {
> + compatible = "foo,i-leak-current";
> + reg = <0x12350000 0x1000>;
> + power-domains = <&rpmhpd 0>;
> + operating-points-v2 = <&leaky_opp_table>;
> + };
> +
> + leaky_opp_table: opp-table {
> + compatible = "operating-points-v2";
> + opp1 {
> + opp-hz = /bits/ 64 <144000>;
> + required-opps = <&rpmhpd_opp_low>;
> + };
> +
> + opp2 {
> + opp-hz = /bits/ 64 <400000>;
> + required-opps = <&rpmhpd_opp_ret>;
> + };
> +
> + opp3 {
> + opp-hz = /bits/ 64 <20000000>;
> + required-opps = <&rpmpd_opp_svs>;
> + };
> +
> + opp4 {
> + opp-hz = /bits/ 64 <25000000>;
> + required-opps = <&rpmpd_opp_normal>;
> + };
> + };
> +...
>
--
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