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Message-ID: <YnLmNCwNfoqZln12@robh.at.kernel.org>
Date: Wed, 4 May 2022 15:46:44 -0500
From: Rob Herring <robh@...nel.org>
To: Bhupesh Sharma <bhupesh.sharma@...aro.org>
Cc: linux-mmc@...r.kernel.org, bhupesh.linux@...il.com,
agross@...nel.org, linux-arm-msm@...r.kernel.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
bjorn.andersson@...aro.org, ulf.hansson@...aro.org
Subject: Re: [PATCH 1/4] dt-bindings: mmc/sdhci-msm: Convert bindings to yaml
On Sat, Apr 30, 2022 at 03:38:30AM +0530, Bhupesh Sharma wrote:
> Convert Qualcomm sdhci-msm devicetree binding to YAML.
>
> Cc: Ulf Hansson <ulf.hansson@...aro.org>
> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
> Cc: Rob Herring <robh@...nel.org>
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> ---
> .../devicetree/bindings/mmc/sdhci-msm.txt | 123 -----------
> .../devicetree/bindings/mmc/sdhci-msm.yaml | 192 ++++++++++++++++++
> 2 files changed, 192 insertions(+), 123 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-msm.yaml
>
> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> deleted file mode 100644
> index 6216ed777343..000000000000
> --- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
> +++ /dev/null
> @@ -1,123 +0,0 @@
> -* Qualcomm SDHCI controller (sdhci-msm)
> -
> -This file documents differences between the core properties in mmc.txt
> -and the properties used by the sdhci-msm driver.
> -
> -Required properties:
> -- compatible: Should contain a SoC-specific string and a IP version string:
> - version strings:
> - "qcom,sdhci-msm-v4" for sdcc versions less than 5.0
> - "qcom,sdhci-msm-v5" for sdcc version 5.0
> - For SDCC version 5.0.0, MCI registers are removed from SDCC
> - interface and some registers are moved to HC. New compatible
> - string is added to support this change - "qcom,sdhci-msm-v5".
> - full compatible strings with SoC and version:
> - "qcom,apq8084-sdhci", "qcom,sdhci-msm-v4"
> - "qcom,msm8226-sdhci", "qcom,sdhci-msm-v4"
> - "qcom,msm8953-sdhci", "qcom,sdhci-msm-v4"
> - "qcom,msm8974-sdhci", "qcom,sdhci-msm-v4"
> - "qcom,msm8916-sdhci", "qcom,sdhci-msm-v4"
> - "qcom,msm8992-sdhci", "qcom,sdhci-msm-v4"
> - "qcom,msm8994-sdhci", "qcom,sdhci-msm-v4"
> - "qcom,msm8996-sdhci", "qcom,sdhci-msm-v4"
> - "qcom,qcs404-sdhci", "qcom,sdhci-msm-v5"
> - "qcom,sc7180-sdhci", "qcom,sdhci-msm-v5";
> - "qcom,sc7280-sdhci", "qcom,sdhci-msm-v5";
> - "qcom,sdm845-sdhci", "qcom,sdhci-msm-v5"
> - "qcom,sdx55-sdhci", "qcom,sdhci-msm-v5";
> - "qcom,sm8250-sdhci", "qcom,sdhci-msm-v5"
> - NOTE that some old device tree files may be floating around that only
> - have the string "qcom,sdhci-msm-v4" without the SoC compatible string
> - but doing that should be considered a deprecated practice.
> -
> -- reg: Base address and length of the register in the following order:
> - - Host controller register map (required)
> - - SD Core register map (required for controllers earlier than msm-v5)
> - - CQE register map (Optional, CQE support is present on SDHC instance meant
> - for eMMC and version v4.2 and above)
> - - Inline Crypto Engine register map (optional)
> -- reg-names: When CQE register map is supplied, below reg-names are required
> - - "hc" for Host controller register map
> - - "core" for SD core register map
> - - "cqhci" for CQE register map
> - - "ice" for Inline Crypto Engine register map (optional)
> -- interrupts: Should contain an interrupt-specifiers for the interrupts:
> - - Host controller interrupt (required)
> -- pinctrl-names: Should contain only one value - "default".
> -- pinctrl-0: Should specify pin control groups used for this controller.
> -- clocks: A list of phandle + clock-specifier pairs for the clocks listed in clock-names.
> -- clock-names: Should contain the following:
> - "iface" - Main peripheral bus clock (PCLK/HCLK - AHB Bus clock) (required)
> - "core" - SDC MMC clock (MCLK) (required)
> - "bus" - SDCC bus voter clock (optional)
> - "xo" - TCXO clock (optional)
> - "cal" - reference clock for RCLK delay calibration (optional)
> - "sleep" - sleep clock for RCLK delay calibration (optional)
> - "ice" - clock for Inline Crypto Engine (optional)
> -
> -- qcom,ddr-config: Certain chipsets and platforms require particular settings
> - for the DDR_CONFIG register. Use this field to specify the register
> - value as per the Hardware Programming Guide.
> -
> -- qcom,dll-config: Chipset and Platform specific value. Use this field to
> - specify the DLL_CONFIG register value as per Hardware Programming Guide.
> -
> -Optional Properties:
> -* Following bus parameters are required for interconnect bandwidth scaling:
> -- interconnects: Pairs of phandles and interconnect provider specifier
> - to denote the edge source and destination ports of
> - the interconnect path.
> -
> -- interconnect-names: For sdhc, we have two main paths.
> - 1. Data path : sdhc to ddr
> - 2. Config path : cpu to sdhc
> - For Data interconnect path the name supposed to be
> - is "sdhc-ddr" and for config interconnect path it is
> - "cpu-sdhc".
> - Please refer to Documentation/devicetree/bindings/
> - interconnect/ for more details.
> -
> -Example:
> -
> - sdhc_1: sdhci@...24900 {
> - compatible = "qcom,msm8974-sdhci", "qcom,sdhci-msm-v4";
> - reg = <0xf9824900 0x11c>, <0xf9824000 0x800>;
> - interrupts = <0 123 0>;
> - bus-width = <8>;
> - non-removable;
> -
> - vmmc-supply = <&pm8941_l20>;
> - vqmmc-supply = <&pm8941_s3>;
> -
> - pinctrl-names = "default";
> - pinctrl-0 = <&sdc1_clk &sdc1_cmd &sdc1_data>;
> -
> - clocks = <&gcc GCC_SDCC1_APPS_CLK>, <&gcc GCC_SDCC1_AHB_CLK>;
> - clock-names = "core", "iface";
> - interconnects = <&qnoc MASTER_SDCC_ID &qnoc SLAVE_DDR_ID>,
> - <&qnoc MASTER_CPU_ID &qnoc SLAVE_SDCC_ID>;
> - interconnect-names = "sdhc-ddr","cpu-sdhc";
> -
> - qcom,dll-config = <0x000f642c>;
> - qcom,ddr-config = <0x80040868>;
> - };
> -
> - sdhc_2: sdhci@...a4900 {
> - compatible = "qcom,msm8974-sdhci", "qcom,sdhci-msm-v4";
> - reg = <0xf98a4900 0x11c>, <0xf98a4000 0x800>;
> - interrupts = <0 125 0>;
> - bus-width = <4>;
> - cd-gpios = <&msmgpio 62 0x1>;
> -
> - vmmc-supply = <&pm8941_l21>;
> - vqmmc-supply = <&pm8941_l13>;
> -
> - pinctrl-names = "default";
> - pinctrl-0 = <&sdc2_clk &sdc2_cmd &sdc2_data>;
> -
> - clocks = <&gcc GCC_SDCC2_APPS_CLK>, <&gcc GCC_SDCC2_AHB_CLK>;
> - clock-names = "core", "iface";
> -
> - qcom,dll-config = <0x0007642c>;
> - qcom,ddr-config = <0x80040868>;
> - };
> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.yaml b/Documentation/devicetree/bindings/mmc/sdhci-msm.yaml
> new file mode 100644
> index 000000000000..c33f173e3b6c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.yaml
> @@ -0,0 +1,192 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/mmc/sdhci-msm.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Qualcomm SDHCI controller (sdhci-msm)
> +
> +maintainers:
> + - Bhupesh Sharma <bhupesh.sharma@...aro.org>
> +
> +description:
> + Secure Digital Host Controller Interface (SDHCI) present on
> + Qualcomm SOCs supports SD/MMC/SDIO devices.
> +
> +properties:
> + compatible:
> + oneOf:
> + - items:
> + - enum:
> + - qcom,apq8084-sdhci
> + - qcom,msm8226-sdhci
> + - qcom,msm8953-sdhci
> + - qcom,msm8974-sdhci
> + - qcom,msm8916-sdhci
> + - qcom,msm8992-sdhci
> + - qcom,msm8994-sdhci
> + - qcom,msm8996-sdhci
> + - qcom,qcs404-sdhci
> + - qcom,sc7180-sdhci
> + - qcom,sc7280-sdhci
> + - qcom,sdm630-sdhci
> + - qcom,sdm845-sdhci
> + - qcom,sdx55-sdhci
> + - qcom,sm6125-sdhci
> + - qcom,sm6350-sdhci
> + - qcom,sm8250-sdhci
> + - enum:
> + - qcom,sdhci-msm-v4 # for sdcc versions less than 5.0
> + - qcom,sdhci-msm-v5 # for sdcc version 5.0
This should be split up between v4 and v5.
> + - items:
> + - const: qcom,sdhci-msm-v4 # Deprecated (only for backward compatibility)
> + # for sdcc versions less than 5.0
deprecated: true
> +
> + reg:
> + minItems: 1
> + items:
> + - description: Host controller register map
> + - description: SD Core register map
> + - description: CQE register map
> + - description: Inline Crypto Engine register map
> +
> + clocks:
> + minItems: 3
> + items:
> + - description: Main peripheral bus clock, PCLK/HCLK - AHB Bus clock
> + - description: SDC MMC clock, MCLK
> + - description: TCXO clock
> + - description: clock for Inline Crypto Engine
> + - description: SDCC bus voter clock
> + - description: reference clock for RCLK delay calibration
> + - description: sleep clock for RCLK delay calibration
> +
> + clock-names:
> + minItems: 2
> + items:
> + - const: iface
> + - const: core
> + - const: xo
> + - const: ice
> + - const: bus
> + - const: cal
> + - const: sleep
> +
> + interrupts:
> + maxItems: 2
> +
> + interrupt-names:
> + items:
> + - const: hc_irq
> + - const: pwr_irq
> +
> + pinctrl-names:
> + minItems: 1
> + items:
> + - const: default
> + - const: sleep
> +
> + pinctrl-0:
> + description:
> + Should specify pin control groups used for this controller.
> +
> + qcom,ddr-config:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: platform specific settings for DDR_CONFIG reg.
> +
> + qcom,dll-config:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: platform specific settings for DLL_CONFIG reg.
> +
> + iommus:
> + minItems: 1
> + maxItems: 8
> + description: |
> + phandle to apps_smmu node with sid mask.
> +
> + interconnects:
> + items:
> + - description: data path, sdhc to ddr
> + - description: config path, cpu to sdhc
> +
> + interconnect-names:
> + items:
> + - const: sdhc-ddr
> + - const: cpu-sdhc
> +
> + power-domains:
> + description: A phandle to sdhci power domain node
> + maxItems: 1
> +
> +patternProperties:
> + '^opp-table(-[a-z0-9]+)?$':
> + if:
> + properties:
> + compatible:
> + const: operating-points-v2
> + then:
> + patternProperties:
> + '^opp-?[0-9]+$':
> + required:
> + - required-opps
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - interrupts
> +
> +additionalProperties: true
Not valid except for common (incomplete) schemas. Instead you need:
allOf:
- $ref: mmc-controller.yaml#
unevaluatedProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/clock/qcom,gcc-sm8250.h>
> + #include <dt-bindings/clock/qcom,rpmh.h>
> + #include <dt-bindings/power/qcom-rpmpd.h>
> +
> + sdhc_2: sdhci@...4000 {
This will be an error then.
> + compatible = "qcom,sm8250-sdhci", "qcom,sdhci-msm-v5";
> + reg = <0 0x08804000 0 0x1000>;
> +
> + interrupts = <GIC_SPI 204 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 222 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "hc_irq", "pwr_irq";
> +
> + clocks = <&gcc GCC_SDCC2_AHB_CLK>,
> + <&gcc GCC_SDCC2_APPS_CLK>,
> + <&rpmhcc RPMH_CXO_CLK>;
> + clock-names = "iface", "core", "xo";
> + iommus = <&apps_smmu 0x4a0 0x0>;
> + qcom,dll-config = <0x0007642c>;
> + qcom,ddr-config = <0x80040868>;
> + power-domains = <&rpmhpd SM8250_CX>;
> +
> + operating-points-v2 = <&sdhc2_opp_table>;
> +
> + sdhc2_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + opp-19200000 {
> + opp-hz = /bits/ 64 <19200000>;
> + required-opps = <&rpmhpd_opp_min_svs>;
> + };
> +
> + opp-50000000 {
> + opp-hz = /bits/ 64 <50000000>;
> + required-opps = <&rpmhpd_opp_low_svs>;
> + };
> +
> + opp-100000000 {
> + opp-hz = /bits/ 64 <100000000>;
> + required-opps = <&rpmhpd_opp_svs>;
> + };
> +
> + opp-202000000 {
> + opp-hz = /bits/ 64 <202000000>;
> + required-opps = <&rpmhpd_opp_svs_l1>;
> + };
> + };
> + };
> --
> 2.35.1
>
>
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