diff mbox series

[1/6] dt-bindings: pci/qcom,pcie: convert to YAML

Message ID 20220422114841.1854138-2-dmitry.baryshkov@linaro.org
State Superseded
Headers show
Series dt-bindings: YAMLify pci/qcom,pcie schema | expand

Commit Message

Dmitry Baryshkov April 22, 2022, 11:48 a.m. UTC 
Changes to examples:
 - Inline clock and reset numbers rather than including dt-bindings
   files because of conflicts between the headers
 - Split ranges properties to follow current practice

Changes to the schema:
 - Fixed the ordering of clock-names/reset-names according to
   the dtsi files.
 - Mark vdda-supply as required only for apq/ipq8064 (as it was marked
   as generally required in the txt file).

Note: while it was not clearly described in text schema, the majority of
Qualcomm platforms follow the snps,dw-pcie schema and use two
compatibility strings in the DT files: platform-specific one and a
fallback to the generic snps,dw-pcie one. This will be sorted out in the
next patches.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 .../devicetree/bindings/pci/qcom,pcie.txt     | 397 ------------
 .../devicetree/bindings/pci/qcom,pcie.yaml    | 607 ++++++++++++++++++
 2 files changed, 607 insertions(+), 397 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
 create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.yaml

Comments

Dmitry Baryshkov April 22, 2022, 4:49 p.m. UTC | #1 
On Fri, 22 Apr 2022 at 16:10, Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> On 22/04/2022 13:48, Dmitry Baryshkov wrote:
> > Changes to examples:
> >  - Inline clock and reset numbers rather than including dt-bindings
> >    files because of conflicts between the headers
> >  - Split ranges properties to follow current practice
> >
> > Changes to the schema:
> >  - Fixed the ordering of clock-names/reset-names according to
> >    the dtsi files.
> >  - Mark vdda-supply as required only for apq/ipq8064 (as it was marked
> >    as generally required in the txt file).
> >
> > Note: while it was not clearly described in text schema, the majority of
> > Qualcomm platforms follow the snps,dw-pcie schema and use two
> > compatibility strings in the DT files: platform-specific one and a
> > fallback to the generic snps,dw-pcie one. This will be sorted out in the
> > next patches.
>
> I don't get why you add snps,dw-pcie fallback here, even though original
> bindings (except examples, which are not bindings) were not mentioning
> it. Maybe just skip it?

Ack, I'll squash the snps,dw-pcie patch into this one.

>
> >
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> > ---
> >  .../devicetree/bindings/pci/qcom,pcie.txt     | 397 ------------
> >  .../devicetree/bindings/pci/qcom,pcie.yaml    | 607 ++++++++++++++++++
> >  2 files changed, 607 insertions(+), 397 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
> >  create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> >
>
> (...)
>
> > -     };
> > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > new file mode 100644
> > index 000000000000..89a1021df9bc
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > @@ -0,0 +1,607 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/pci/qcom,pcie.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Qualcomm PCI express root complex
> > +
> > +maintainers:
> > +  - Bjorn Andersson <bjorn.andersson@linaro.org>
> > +  - Stanimir Varbanov <svarbanov@mm-sol.com>
> > +
> > +description: |
> > +  Qualcomm PCIe root complex controller is bansed on the Synopsys DesignWare
> > +  PCIe IP.
> > +
> > +properties:
> > +  compatible:
> > +    items:
> > +      - enum:
> > +          - qcom,pcie-ipq8064
> > +          - qcom,pcie-ipq8064-v2
> > +          - qcom,pcie-apq8064
> > +          - qcom,pcie-apq8084
> > +          - qcom,pcie-msm8996
> > +          - qcom,pcie-ipq4019
> > +          - qcom,pcie-ipq8074
> > +          - qcom,pcie-qcs404
> > +          - qcom,pcie-sc8180x
> > +          - qcom,pcie-sdm845
> > +          - qcom,pcie-sm8250
> > +          - qcom,pcie-sm8450-pcie0
> > +          - qcom,pcie-sm8450-pcie1
> > +          - qcom,pcie-ipq6018
> > +      - const: snps,dw-pcie
> > +
> > +  reg:
> > +    minItems: 4
> > +    maxItems: 5
> > +
> > +  reg-names:
> > +    minItems: 4
> > +    maxItems: 5
> > +    items:
> > +      enum:
> > +        - parf # Qualcomm specific registers
> > +        - dbi # DesignWare PCIe registers
> > +        - elbi # External local bus interface registers
> > +        - config # PCIe configuration space
> > +        - atu # ATU address space (optional)> +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  interrupt-names:
> > +    items:
> > +      - const: "msi"
> > +
> > +  clocks: true
>
> min/maxItems
>
> same for clock-names
>
> > +
> > +  vdda-supply:
> > +    description: A phandle to the core analog power supply
> > +
> > +  vdda_phy-supply:
> > +    description: A phandle to the core analog power supply for PHY
> > +
> > +  vdda_refclk-supply:
> > +    description: A phandle to the core analog power supply for IC which generates reference clock
> > +
> > +  vddpe-3v3-supply:
> > +    description: A phandle to the PCIe endpoint power supply
> > +
> > +  phys:
> > +    maxItems: 1
> > +
> > +  phy-names:
> > +    items:
> > +      - const: "pciephy"
> > +
> > +  perst-gpio:
> > +    description: GPIO pin number of PERST# signal
> > +    maxItems: 1
> > +    deprecated: true
>
> Old binding did not have it.

Ack, dropping.

>
> > +
> > +  perst-gpios:
> > +    description: GPIO controlled connection to PERST# signal
> > +    maxItems: 1
> > +
>
> You miss here power-domains, resets and reset-names with min/maxItems.

power-domains are described later in the non-8064 cases.

Will add everything here.

>
> > +  wake-gpio:
> > +    description: GPIO pin number of WAKE# signal
> > +    maxItems: 1
> > +    deprecated: true
>

Ack dropping.

>
> > +
> > +  wake-gpios:
> > +    description: GPIO controlled connection to WAKE# signal
> > +    maxItems: 1
> > +
> > +  iommu-map: true
> > +  iommu-map-mask: true
>
> Not present in old binding. If this is trully needed, mention it in
> commit msg.

They are used on newer platforms. Will mention it.

>
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - reg-names
> > +  - interrupts
> > +  - interrupt-names
>
> What about interrupt-cells, clocks, clock-names, resets, reset-names?

Ugh. Missed them, adding back.

>
> > +
> > +allOf:
> > +  - $ref: /schemas/pci/pci-bus.yaml#
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - qcom,pcie-apq8064
> > +    then:
> > +      properties:
> > +        clocks:
> > +          minItems: 3
> > +          maxItems: 3
> > +        clock-names:
> > +          items:
> > +            - const: core # Clocks the pcie hw block
> > +            - const: iface # Configuration AHB clock
> > +            - const: phy # Clocks the pcie PHY block
> > +        resets:
> > +          minItems: 5
> > +          maxItems: 5
> > +        reset-names:
> > +          items:
> > +            - const: axi # AXI reset
> > +            - const: ahb # AHB reset
> > +            - const: por # POR reset
> > +            - const: pci # PCI reset
> > +            - const: phy # PHY reset
>
> Missing required properties e.g. some supplies.

Ok, I'll merge all apq8064 and ipq8064 entries into a single if/then condition.

> Plus one blank line.
>
> The same applies below to other ifs.
>
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - qcom,pcie-ipq8064
> > +              - qcom,pcie-ipq8064v2
>
> (...)
>
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +    pcie@1b500000 {
> > +      compatible = "qcom,pcie-ipq8064", "snps,dw-pcie";
> > +      reg = <0x1b500000 0x1000
> > +             0x1b502000 0x80
> > +             0x1b600000 0x100
> > +             0x0ff00000 0x100000>;
>
> Convert the example to match current bindings, so reg should be split.

I wonder why the dt_bindings check didn't warn me about it.

>
> > +      reg-names = "dbi", "elbi", "parf", "config";
> > +      device_type = "pci";
> > +      linux,pci-domain = <0>;
> > +      bus-range = <0x00 0xff>;
> > +      num-lanes = <1>;
> > +      #address-cells = <3>;
> > +      #size-cells = <2>;
> > +      ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000>,
> > +               <0x82000000 0 0 0x08000000 0 0x07e00000>;
> > +      interrupts = <GIC_SPI 238 IRQ_TYPE_NONE>;
>
> Looks like wrong IRQ flag.

Ack

>
> > +      interrupt-names = "msi";
> > +      #interrupt-cells = <1>;
> > +      interrupt-map-mask = <0 0 0 0x7>;
> > +      interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>,
> > +                      <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>,
> > +                      <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>,
> > +                      <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>;
> > +      clocks = <&gcc 41>,
> > +               <&gcc 43>,
> > +               <&gcc 44>,
> > +               <&gcc 42>,
> > +               <&gcc 248>;
> > +      clock-names = "core", "iface", "phy", "aux", "ref";
> > +      resets = <&gcc 27>,
> > +               <&gcc 26>,
> > +               <&gcc 25>,
> > +               <&gcc 24>,
> > +               <&gcc 23>,
> > +               <&gcc 22>;
> > +      reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
> > +      pinctrl-0 = <&pcie_pins_default>;
> > +      pinctrl-names = "default";
> > +      vdda-supply = <&pm8921_s3>;
> > +      vdda_phy-supply = <&pm8921_lvs6>;
> > +      vdda_refclk-supply = <&ext_3p3v>;
> > +    };
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +    #include <dt-bindings/gpio/gpio.h>
> > +    pcie@fc520000 {
> > +      compatible = "qcom,pcie-apq8084", "snps,dw-pcie";
> > +      reg = <0xfc520000 0x2000>,
> > +            <0xff000000 0x1000>,
> > +            <0xff001000 0x1000>,
> > +            <0xff002000 0x2000>;
> > +      reg-names = "parf", "dbi", "elbi", "config";
> > +      device_type = "pci";
> > +      linux,pci-domain = <0>;
> > +      bus-range = <0x00 0xff>;
> > +      num-lanes = <1>;
> > +      #address-cells = <3>;
> > +      #size-cells = <2>;
> > +      ranges = <0x81000000 0 0          0xff200000 0 0x00100000>,
> > +               <0x82000000 0 0x00300000 0xff300000 0 0x00d00000>;
> > +      interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
>
> Ditto.

Ack


--
With best wishes
Dmitry
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
deleted file mode 100644
index 0adb56d5645e..000000000000
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+++ /dev/null
@@ -1,397 +0,0 @@ 
-* Qualcomm PCI express root complex
-
-- compatible:
-	Usage: required
-	Value type: <stringlist>
-	Definition: Value should contain
-			- "qcom,pcie-ipq8064" for ipq8064
-			- "qcom,pcie-ipq8064-v2" for ipq8064 rev 2 or ipq8065
-			- "qcom,pcie-apq8064" for apq8064
-			- "qcom,pcie-apq8084" for apq8084
-			- "qcom,pcie-msm8996" for msm8996 or apq8096
-			- "qcom,pcie-ipq4019" for ipq4019
-			- "qcom,pcie-ipq8074" for ipq8074
-			- "qcom,pcie-qcs404" for qcs404
-			- "qcom,pcie-sc8180x" for sc8180x
-			- "qcom,pcie-sdm845" for sdm845
-			- "qcom,pcie-sm8250" for sm8250
-			- "qcom,pcie-sm8450-pcie0" for PCIe0 on sm8450
-			- "qcom,pcie-sm8450-pcie1" for PCIe1 on sm8450
-			- "qcom,pcie-ipq6018" for ipq6018
-
-- reg:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: Register ranges as listed in the reg-names property
-
-- reg-names:
-	Usage: required
-	Value type: <stringlist>
-	Definition: Must include the following entries
-			- "parf"   Qualcomm specific registers
-			- "dbi"	   DesignWare PCIe registers
-			- "elbi"   External local bus interface registers
-			- "config" PCIe configuration space
-			- "atu"    ATU address space (optional)
-
-- device_type:
-	Usage: required
-	Value type: <string>
-	Definition: Should be "pci". As specified in snps,dw-pcie.yaml
-
-- #address-cells:
-	Usage: required
-	Value type: <u32>
-	Definition: Should be 3. As specified in snps,dw-pcie.yaml
-
-- #size-cells:
-	Usage: required
-	Value type: <u32>
-	Definition: Should be 2. As specified in snps,dw-pcie.yaml
-
-- ranges:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: As specified in snps,dw-pcie.yaml
-
-- interrupts:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: MSI interrupt
-
-- interrupt-names:
-	Usage: required
-	Value type: <stringlist>
-	Definition: Should contain "msi"
-
-- #interrupt-cells:
-	Usage: required
-	Value type: <u32>
-	Definition: Should be 1. As specified in snps,dw-pcie.yaml
-
-- interrupt-map-mask:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: As specified in snps,dw-pcie.yaml
-
-- interrupt-map:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: As specified in snps,dw-pcie.yaml
-
-- clocks:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: List of phandle and clock specifier pairs as listed
-		    in clock-names property
-
-- clock-names:
-	Usage: required
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "iface"	Configuration AHB clock
-
-- clock-names:
-	Usage: required for ipq/apq8064
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "core"	Clocks the pcie hw block
-			- "phy"		Clocks the pcie PHY block
-			- "aux" 	Clocks the pcie AUX block
-			- "ref" 	Clocks the pcie ref block
-- clock-names:
-	Usage: required for apq8084/ipq4019
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "aux"		Auxiliary (AUX) clock
-			- "bus_master"	Master AXI clock
-			- "bus_slave"	Slave AXI clock
-
-- clock-names:
-	Usage: required for msm8996/apq8096
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "pipe"	Pipe Clock driving internal logic
-			- "aux"		Auxiliary (AUX) clock
-			- "cfg"		Configuration clock
-			- "bus_master"	Master AXI clock
-			- "bus_slave"	Slave AXI clock
-
-- clock-names:
-	Usage: required for ipq8074
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "iface"	PCIe to SysNOC BIU clock
-			- "axi_m"	AXI Master clock
-			- "axi_s"	AXI Slave clock
-			- "ahb"		AHB clock
-			- "aux"		Auxiliary clock
-
-- clock-names:
-	Usage: required for ipq6018
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "iface"	PCIe to SysNOC BIU clock
-			- "axi_m"	AXI Master clock
-			- "axi_s"	AXI Slave clock
-			- "axi_bridge"	AXI bridge clock
-			- "rchng"
-
-- clock-names:
-	Usage: required for qcs404
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "iface"	AHB clock
-			- "aux"		Auxiliary clock
-			- "master_bus"	AXI Master clock
-			- "slave_bus"	AXI Slave clock
-
-- clock-names:
-	Usage: required for sdm845
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "aux"		Auxiliary clock
-			- "cfg"		Configuration clock
-			- "bus_master"	Master AXI clock
-			- "bus_slave"	Slave AXI clock
-			- "slave_q2a"	Slave Q2A clock
-			- "tbu"		PCIe TBU clock
-			- "pipe"	PIPE clock
-
-- clock-names:
-	Usage: required for sc8180x and sm8250
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "aux"		Auxiliary clock
-			- "cfg"		Configuration clock
-			- "bus_master"	Master AXI clock
-			- "bus_slave"	Slave AXI clock
-			- "slave_q2a"	Slave Q2A clock
-			- "tbu"		PCIe TBU clock
-			- "ddrss_sf_tbu" PCIe SF TBU clock
-			- "pipe"	PIPE clock
-
-- clock-names:
-	Usage: required for sm8450-pcie0 and sm8450-pcie1
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "aux"         Auxiliary clock
-			- "cfg"         Configuration clock
-			- "bus_master"  Master AXI clock
-			- "bus_slave"   Slave AXI clock
-			- "slave_q2a"   Slave Q2A clock
-			- "tbu"         PCIe TBU clock
-			- "ddrss_sf_tbu" PCIe SF TBU clock
-			- "pipe"        PIPE clock
-			- "pipe_mux"    PIPE MUX
-			- "phy_pipe"    PIPE output clock
-			- "ref"         REFERENCE clock
-			- "aggre0"	Aggre NoC PCIe0 AXI clock, only for sm8450-pcie0
-			- "aggre1"	Aggre NoC PCIe1 AXI clock
-
-- resets:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: List of phandle and reset specifier pairs as listed
-		    in reset-names property
-
-- reset-names:
-	Usage: required for ipq/apq8064
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "axi"  AXI reset
-			- "ahb"  AHB reset
-			- "por"  POR reset
-			- "pci"  PCI reset
-			- "phy"  PHY reset
-
-- reset-names:
-	Usage: required for apq8084
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "core" Core reset
-
-- reset-names:
-	Usage: required for ipq/apq8064
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "axi_m"		AXI master reset
-			- "axi_s"		AXI slave reset
-			- "pipe"		PIPE reset
-			- "axi_m_vmid"		VMID reset
-			- "axi_s_xpu"		XPU reset
-			- "parf"		PARF reset
-			- "phy"			PHY reset
-			- "axi_m_sticky"	AXI sticky reset
-			- "pipe_sticky"		PIPE sticky reset
-			- "pwr"			PWR reset
-			- "ahb"			AHB reset
-			- "phy_ahb"		PHY AHB reset
-			- "ext"			EXT reset
-
-- reset-names:
-	Usage: required for ipq8074
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "pipe"		PIPE reset
-			- "sleep"		Sleep reset
-			- "sticky"		Core Sticky reset
-			- "axi_m"		AXI Master reset
-			- "axi_s"		AXI Slave reset
-			- "ahb"			AHB Reset
-			- "axi_m_sticky"	AXI Master Sticky reset
-
-- reset-names:
-	Usage: required for ipq6018
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "pipe"		PIPE reset
-			- "sleep"		Sleep reset
-			- "sticky"		Core Sticky reset
-			- "axi_m"		AXI Master reset
-			- "axi_s"		AXI Slave reset
-			- "ahb"			AHB Reset
-			- "axi_m_sticky"	AXI Master Sticky reset
-			- "axi_s_sticky"	AXI Slave Sticky reset
-
-- reset-names:
-	Usage: required for qcs404
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "axi_m"		AXI Master reset
-			- "axi_s"		AXI Slave reset
-			- "axi_m_sticky"	AXI Master Sticky reset
-			- "pipe_sticky"		PIPE sticky reset
-			- "pwr"			PWR reset
-			- "ahb"			AHB reset
-
-- reset-names:
-	Usage: required for sc8180x, sdm845, sm8250 and sm8450
-	Value type: <stringlist>
-	Definition: Should contain the following entries
-			- "pci"			PCIe core reset
-
-- power-domains:
-	Usage: required for apq8084 and msm8996/apq8096
-	Value type: <prop-encoded-array>
-	Definition: A phandle and power domain specifier pair to the
-		    power domain which is responsible for collapsing
-		    and restoring power to the peripheral
-
-- vdda-supply:
-	Usage: required
-	Value type: <phandle>
-	Definition: A phandle to the core analog power supply
-
-- vdda_phy-supply:
-	Usage: required for ipq/apq8064
-	Value type: <phandle>
-	Definition: A phandle to the analog power supply for PHY
-
-- vdda_refclk-supply:
-	Usage: required for ipq/apq8064
-	Value type: <phandle>
-	Definition: A phandle to the analog power supply for IC which generates
-		    reference clock
-- vddpe-3v3-supply:
-	Usage: optional
-	Value type: <phandle>
-	Definition: A phandle to the PCIe endpoint power supply
-
-- phys:
-	Usage: required for apq8084 and qcs404
-	Value type: <phandle>
-	Definition: List of phandle(s) as listed in phy-names property
-
-- phy-names:
-	Usage: required for apq8084 and qcs404
-	Value type: <stringlist>
-	Definition: Should contain "pciephy"
-
-- <name>-gpios:
-	Usage: optional
-	Value type: <prop-encoded-array>
-	Definition: List of phandle and GPIO specifier pairs. Should contain
-			- "perst-gpios"	PCIe endpoint reset signal line
-			- "wake-gpios"	PCIe endpoint wake signal line
-
-* Example for ipq/apq8064
-	pcie@1b500000 {
-		compatible = "qcom,pcie-apq8064", "qcom,pcie-ipq8064", "snps,dw-pcie";
-		reg = <0x1b500000 0x1000
-		       0x1b502000 0x80
-		       0x1b600000 0x100
-		       0x0ff00000 0x100000>;
-		reg-names = "dbi", "elbi", "parf", "config";
-		device_type = "pci";
-		linux,pci-domain = <0>;
-		bus-range = <0x00 0xff>;
-		num-lanes = <1>;
-		#address-cells = <3>;
-		#size-cells = <2>;
-		ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000   /* I/O */
-			  0x82000000 0 0 0x08000000 0 0x07e00000>; /* memory */
-		interrupts = <GIC_SPI 238 IRQ_TYPE_NONE>;
-		interrupt-names = "msi";
-		#interrupt-cells = <1>;
-		interrupt-map-mask = <0 0 0 0x7>;
-		interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
-				<0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
-				<0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
-				<0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
-		clocks = <&gcc PCIE_A_CLK>,
-			 <&gcc PCIE_H_CLK>,
-			 <&gcc PCIE_PHY_CLK>,
-			 <&gcc PCIE_AUX_CLK>,
-			 <&gcc PCIE_ALT_REF_CLK>;
-		clock-names = "core", "iface", "phy", "aux", "ref";
-		resets = <&gcc PCIE_ACLK_RESET>,
-			 <&gcc PCIE_HCLK_RESET>,
-			 <&gcc PCIE_POR_RESET>,
-			 <&gcc PCIE_PCI_RESET>,
-			 <&gcc PCIE_PHY_RESET>,
-			 <&gcc PCIE_EXT_RESET>;
-		reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
-		pinctrl-0 = <&pcie_pins_default>;
-		pinctrl-names = "default";
-	};
-
-* Example for apq8084
-	pcie0@fc520000 {
-		compatible = "qcom,pcie-apq8084", "snps,dw-pcie";
-		reg = <0xfc520000 0x2000>,
-		      <0xff000000 0x1000>,
-		      <0xff001000 0x1000>,
-		      <0xff002000 0x2000>;
-		reg-names = "parf", "dbi", "elbi", "config";
-		device_type = "pci";
-		linux,pci-domain = <0>;
-		bus-range = <0x00 0xff>;
-		num-lanes = <1>;
-		#address-cells = <3>;
-		#size-cells = <2>;
-		ranges = <0x81000000 0 0          0xff200000 0 0x00100000   /* I/O */
-			  0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* memory */
-		interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
-		interrupt-names = "msi";
-		#interrupt-cells = <1>;
-		interrupt-map-mask = <0 0 0 0x7>;
-		interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
-				<0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
-				<0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
-				<0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
-		clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
-			 <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
-			 <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
-			 <&gcc GCC_PCIE_0_AUX_CLK>;
-		clock-names = "iface", "master_bus", "slave_bus", "aux";
-		resets = <&gcc GCC_PCIE_0_BCR>;
-		reset-names = "core";
-		power-domains = <&gcc PCIE0_GDSC>;
-		vdda-supply = <&pma8084_l3>;
-		phys = <&pciephy0>;
-		phy-names = "pciephy";
-		perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
-		pinctrl-0 = <&pcie0_pins_default>;
-		pinctrl-names = "default";
-	};
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
new file mode 100644
index 000000000000..89a1021df9bc
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
@@ -0,0 +1,607 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/qcom,pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm PCI express root complex
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+  - Stanimir Varbanov <svarbanov@mm-sol.com>
+
+description: |
+  Qualcomm PCIe root complex controller is bansed on the Synopsys DesignWare
+  PCIe IP.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - qcom,pcie-ipq8064
+          - qcom,pcie-ipq8064-v2
+          - qcom,pcie-apq8064
+          - qcom,pcie-apq8084
+          - qcom,pcie-msm8996
+          - qcom,pcie-ipq4019
+          - qcom,pcie-ipq8074
+          - qcom,pcie-qcs404
+          - qcom,pcie-sc8180x
+          - qcom,pcie-sdm845
+          - qcom,pcie-sm8250
+          - qcom,pcie-sm8450-pcie0
+          - qcom,pcie-sm8450-pcie1
+          - qcom,pcie-ipq6018
+      - const: snps,dw-pcie
+
+  reg:
+    minItems: 4
+    maxItems: 5
+
+  reg-names:
+    minItems: 4
+    maxItems: 5
+    items:
+      enum:
+        - parf # Qualcomm specific registers
+        - dbi # DesignWare PCIe registers
+        - elbi # External local bus interface registers
+        - config # PCIe configuration space
+        - atu # ATU address space (optional)
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-names:
+    items:
+      - const: "msi"
+
+  clocks: true
+
+  vdda-supply:
+    description: A phandle to the core analog power supply
+
+  vdda_phy-supply:
+    description: A phandle to the core analog power supply for PHY
+
+  vdda_refclk-supply:
+    description: A phandle to the core analog power supply for IC which generates reference clock
+
+  vddpe-3v3-supply:
+    description: A phandle to the PCIe endpoint power supply
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    items:
+      - const: "pciephy"
+
+  perst-gpio:
+    description: GPIO pin number of PERST# signal
+    maxItems: 1
+    deprecated: true
+
+  perst-gpios:
+    description: GPIO controlled connection to PERST# signal
+    maxItems: 1
+
+  wake-gpio:
+    description: GPIO pin number of WAKE# signal
+    maxItems: 1
+    deprecated: true
+
+  wake-gpios:
+    description: GPIO controlled connection to WAKE# signal
+    maxItems: 1
+
+  iommu-map: true
+  iommu-map-mask: true
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - interrupt-names
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-apq8064
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 3
+        clock-names:
+          items:
+            - const: core # Clocks the pcie hw block
+            - const: iface # Configuration AHB clock
+            - const: phy # Clocks the pcie PHY block
+        resets:
+          minItems: 5
+          maxItems: 5
+        reset-names:
+          items:
+            - const: axi # AXI reset
+            - const: ahb # AHB reset
+            - const: por # POR reset
+            - const: pci # PCI reset
+            - const: phy # PHY reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-ipq8064
+              - qcom,pcie-ipq8064v2
+    then:
+      properties:
+        clocks:
+          minItems: 5
+          maxItems: 5
+        clock-names:
+          items:
+            - const: core # Clocks the pcie hw block
+            - const: iface # Configuration AHB clock
+            - const: phy # Clocks the pcie PHY block
+            - const: aux # Clocks the pcie AUX block
+            - const: ref # Clocks the pcie ref block
+        resets:
+          minItems: 6
+          maxItems: 6
+        reset-names:
+          items:
+            - const: axi # AXI reset
+            - const: ahb # AHB reset
+            - const: por # POR reset
+            - const: pci # PCI reset
+            - const: phy # PHY reset
+            - const: ext # EXT reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-apq8084
+    then:
+      properties:
+        clocks:
+          minItems: 4
+          maxItems: 4
+        clock-names:
+          items:
+            - const: iface # Configuration AHB clock
+            - const: master_bus # Master AXI clock
+            - const: slave_bus # Slave AXI clock
+            - const: aux # Auxiliary (AUX) clock
+        resets:
+          maxItems: 1
+        reset-names:
+          items:
+            - const: core # Core reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-ipq4019
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 3
+        clock-names:
+          items:
+            - const: aux # Auxiliary (AUX) clock
+            - const: master_bus # Master AXI clock
+            - const: slave_bus # Slave AXI clock
+        resets:
+          minItems: 12
+          maxItems: 12
+        reset-names:
+          items:
+            - const: axi_m # AXI master reset
+            - const: axi_s # AXI slave reset
+            - const: pipe # PIPE reset
+            - const: axi_m_vmid # VMID reset
+            - const: axi_s_xpu # XPU reset
+            - const: parf # PARF reset
+            - const: phy # PHY reset
+            - const: axi_m_sticky # AXI sticky reset
+            - const: pipe_sticky # PIPE sticky reset
+            - const: pwr # PWR reset
+            - const: ahb # AHB reset
+            - const: phy_ahb # PHY AHB reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-msm8996
+    then:
+      oneOf:
+        - properties:
+            clock-names:
+              items:
+                - const: pipe # Pipe Clock driving internal logic
+                - const: aux # Auxiliary (AUX) clock
+                - const: cfg # Configuration clock
+                - const: bus_master # Master AXI clock
+                - const: bus_slave # Slave AXI clock
+        - properties:
+            clock-names:
+              items:
+                - const: pipe # Pipe Clock driving internal logic
+                - const: bus_master # Master AXI clock
+                - const: bus_slave # Slave AXI clock
+                - const: cfg # Configuration clock
+                - const: aux # Auxiliary (AUX) clock
+      properties:
+        clocks:
+          minItems: 5
+          maxItems: 5
+        resets: false
+        reset-names: false
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-ipq8074
+    then:
+      properties:
+        clocks:
+          minItems: 5
+          maxItems: 5
+        clock-names:
+          items:
+            - const: iface # PCIe to SysNOC BIU clock
+            - const: axi_m # AXI Master clock
+            - const: axi_s # AXI Slave clock
+            - const: ahb # AHB clock
+            - const: aux # Auxiliary clock
+        resets:
+          minItems: 7
+          maxItems: 7
+        reset-names:
+          items:
+            - const: pipe # PIPE reset
+            - const: sleep # Sleep reset
+            - const: sticky # Core Sticky reset
+            - const: axi_m # AXI Master reset
+            - const: axi_s # AXI Slave reset
+            - const: ahb # AHB Reset
+            - const: axi_m_sticky # AXI Master Sticky reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-ipq6018
+    then:
+      properties:
+        clocks:
+          minItems: 5
+          maxItems: 5
+        clock-names:
+          items:
+            - const: iface # PCIe to SysNOC BIU clock
+            - const: axi_m # AXI Master clock
+            - const: axi_s # AXI Slave clock
+            - const: axi_bridge # AXI bridge clock
+            - const: rchng
+        resets:
+          minItems: 8
+          maxItems: 8
+        reset-names:
+          items:
+            - const: pipe # PIPE reset
+            - const: sleep # Sleep reset
+            - const: sticky # Core Sticky reset
+            - const: axi_m # AXI Master reset
+            - const: axi_s # AXI Slave reset
+            - const: ahb # AHB Reset
+            - const: axi_m_sticky # AXI Master Sticky reset
+            - const: axi_s_sticky # AXI Slave Sticky reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-qcs404
+    then:
+      properties:
+        clocks:
+          minItems: 4
+          maxItems: 4
+        clock-names:
+          items:
+            - const: iface # AHB clock
+            - const: aux # Auxiliary clock
+            - const: master_bus # AXI Master clock
+            - const: slave_bus # AXI Slave clock
+        resets:
+          minItems: 6
+          maxItems: 6
+        reset-names:
+          items:
+            - const: axi_m # AXI Master reset
+            - const: axi_s # AXI Slave reset
+            - const: axi_m_sticky # AXI Master Sticky reset
+            - const: pipe_sticky # PIPE sticky reset
+            - const: pwr # PWR reset
+            - const: ahb # AHB reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-sdm845
+    then:
+      oneOf:
+          # Unfortunately the "optional" ref clock is used in the middle of the list
+        - properties:
+            clocks:
+              minItems: 8
+              maxItems: 8
+            clock-names:
+              items:
+                - const: pipe # PIPE clock
+                - const: aux # Auxiliary clock
+                - const: cfg # Configuration clock
+                - const: bus_master # Master AXI clock
+                - const: bus_slave # Slave AXI clock
+                - const: slave_q2a # Slave Q2A clock
+                - const: ref # REFERENCE clock
+                - const: tbu # PCIe TBU clock
+        - properties:
+            clocks:
+              minItems: 7
+              maxItems: 7
+            clock-names:
+              items:
+                - const: pipe # PIPE clock
+                - const: aux # Auxiliary clock
+                - const: cfg # Configuration clock
+                - const: bus_master # Master AXI clock
+                - const: bus_slave # Slave AXI clock
+                - const: slave_q2a # Slave Q2A clock
+                - const: tbu # PCIe TBU clock
+      properties:
+        resets:
+          maxItems: 1
+        reset-names:
+          items:
+            - const: pci # PCIe core reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-sc8180x
+              - qcom,pcie-sm8250
+    then:
+      oneOf:
+          # Unfortunately the "optional" ref clock is used in the middle of the list
+        - properties:
+            clocks:
+              minItems: 9
+              maxItems: 9
+            clock-names:
+              items:
+                - const: pipe # PIPE clock
+                - const: aux # Auxiliary clock
+                - const: cfg # Configuration clock
+                - const: bus_master # Master AXI clock
+                - const: bus_slave # Slave AXI clock
+                - const: slave_q2a # Slave Q2A clock
+                - const: ref # REFERENCE clock
+                - const: tbu # PCIe TBU clock
+                - const: ddrss_sf_tbu # PCIe SF TBU clock
+        - properties:
+            clocks:
+              minItems: 8
+              maxItems: 8
+            clock-names:
+              items:
+                - const: pipe # PIPE clock
+                - const: aux # Auxiliary clock
+                - const: cfg # Configuration clock
+                - const: bus_master # Master AXI clock
+                - const: bus_slave # Slave AXI clock
+                - const: slave_q2a # Slave Q2A clock
+                - const: tbu # PCIe TBU clock
+                - const: ddrss_sf_tbu # PCIe SF TBU clock
+      properties:
+        resets:
+          maxItems: 1
+        reset-names:
+          items:
+            - const: pci # PCIe core reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-sm8450-pcie0
+    then:
+      properties:
+        clocks:
+          minItems: 12
+          maxItems: 12
+        clock-names:
+          items:
+            - const: pipe # PIPE clock
+            - const: pipe_mux # PIPE MUX
+            - const: phy_pipe # PIPE output clock
+            - const: ref # REFERENCE clock
+            - const: aux # Auxiliary clock
+            - const: cfg # Configuration clock
+            - const: bus_master # Master AXI clock
+            - const: bus_slave # Slave AXI clock
+            - const: slave_q2a # Slave Q2A clock
+            - const: ddrss_sf_tbu # PCIe SF TBU clock
+            - const: aggre0 # Aggre NoC PCIe0 AXI clock
+            - const: aggre1 # Aggre NoC PCIe1 AXI clock
+        resets:
+          maxItems: 1
+        reset-names:
+          items:
+            - const: pci # PCIe core reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-sm8450-pcie1
+    then:
+      properties:
+        clocks:
+          minItems: 11
+          maxItems: 11
+        clock-names:
+          items:
+            - const: pipe # PIPE clock
+            - const: pipe_mux # PIPE MUX
+            - const: phy_pipe # PIPE output clock
+            - const: ref # REFERENCE clock
+            - const: aux # Auxiliary clock
+            - const: cfg # Configuration clock
+            - const: bus_master # Master AXI clock
+            - const: bus_slave # Slave AXI clock
+            - const: slave_q2a # Slave Q2A clock
+            - const: ddrss_sf_tbu # PCIe SF TBU clock
+            - const: aggre1 # Aggre NoC PCIe1 AXI clock
+        resets:
+          maxItems: 1
+        reset-names:
+          items:
+            - const: pci # PCIe core reset
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-apq8064
+              - qcom,pcie-ipq8064
+              - qcom,pcie-ipq8064v2
+    then:
+      required:
+        - vdda-supply
+        - vdda_phy-supply
+        - vdda_refclk-supply
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - qcom,pcie-apq8064
+                - qcom,pcie-ipq4019
+                - qcom,pcie-ipq8064
+                - qcom,pcie-ipq8064v2
+                - qcom,pcie-ipq8074
+                - qcom,pcie-qcs404
+    then:
+      properties:
+        power-domains:
+          minItems: 1
+          maxItems: 1
+      required:
+        - power-domains
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    pcie@1b500000 {
+      compatible = "qcom,pcie-ipq8064", "snps,dw-pcie";
+      reg = <0x1b500000 0x1000
+             0x1b502000 0x80
+             0x1b600000 0x100
+             0x0ff00000 0x100000>;
+      reg-names = "dbi", "elbi", "parf", "config";
+      device_type = "pci";
+      linux,pci-domain = <0>;
+      bus-range = <0x00 0xff>;
+      num-lanes = <1>;
+      #address-cells = <3>;
+      #size-cells = <2>;
+      ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000>, 
+               <0x82000000 0 0 0x08000000 0 0x07e00000>; 
+      interrupts = <GIC_SPI 238 IRQ_TYPE_NONE>;
+      interrupt-names = "msi";
+      #interrupt-cells = <1>;
+      interrupt-map-mask = <0 0 0 0x7>;
+      interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, 
+                      <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, 
+                      <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, 
+                      <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; 
+      clocks = <&gcc 41>,
+               <&gcc 43>,
+               <&gcc 44>,
+               <&gcc 42>,
+               <&gcc 248>;
+      clock-names = "core", "iface", "phy", "aux", "ref";
+      resets = <&gcc 27>,
+               <&gcc 26>,
+               <&gcc 25>,
+               <&gcc 24>,
+               <&gcc 23>,
+               <&gcc 22>;
+      reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
+      pinctrl-0 = <&pcie_pins_default>;
+      pinctrl-names = "default";
+      vdda-supply = <&pm8921_s3>;
+      vdda_phy-supply = <&pm8921_lvs6>;
+      vdda_refclk-supply = <&ext_3p3v>;
+    };
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/gpio/gpio.h>
+    pcie@fc520000 {
+      compatible = "qcom,pcie-apq8084", "snps,dw-pcie";
+      reg = <0xfc520000 0x2000>,
+            <0xff000000 0x1000>,
+            <0xff001000 0x1000>,
+            <0xff002000 0x2000>;
+      reg-names = "parf", "dbi", "elbi", "config";
+      device_type = "pci";
+      linux,pci-domain = <0>;
+      bus-range = <0x00 0xff>;
+      num-lanes = <1>;
+      #address-cells = <3>;
+      #size-cells = <2>;
+      ranges = <0x81000000 0 0          0xff200000 0 0x00100000>, 
+               <0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; 
+      interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
+      interrupt-names = "msi";
+      #interrupt-cells = <1>;
+      interrupt-map-mask = <0 0 0 0x7>;
+      interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, 
+                      <0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, 
+                      <0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, 
+                      <0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; 
+      clocks = <&gcc 324>,
+               <&gcc 325>,
+               <&gcc 327>,
+               <&gcc 323>;
+      clock-names = "iface", "master_bus", "slave_bus", "aux";
+      resets = <&gcc 81>;
+      reset-names = "core";
+      power-domains = <&gcc 1>;
+      vdda-supply = <&pma8084_l3>;
+      phys = <&pciephy0>;
+      phy-names = "pciephy";
+      perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
+      pinctrl-0 = <&pcie0_pins_default>;
+      pinctrl-names = "default";
+    };
+...