[PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[Shawn Lin]

This patch adds a binding that describes the Rockchip PCIe controller
found on Rockchip SoCs PCIe interface.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>

---

Changes in v2:
- fix lots clk/reset stuff suggested by Heiko
- remove msi-parent and add msi-map suggested by Marc
- drop phy related stuff
- some others minor fixes

 .../devicetree/bindings/pci/rockchip-pcie.txt      | 86 ++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/rockchip-pcie.txt

diff --git a/Documentation/devicetree/bindings/pci/rockchip-pcie.txt b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
new file mode 100644
index 0000000..eb92e29
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
@@ -0,0 +1,86 @@
+* Rockchip AXI PCIe Root Port Bridge DT description
+
+Required properties:
+- #address-cells: Address representation for root ports, set to <3>
+- #size-cells: Size representation for root ports, set to <2>
+- #interrupt-cells: specifies the number of cells needed to encode an
+		interrupt source. The value must be 1.
+- compatible: Should contain "rockchip,rk3399-pcie"
+- reg: Two register ranges as listed in the reg-names property
+- reg-names: Must include the following names
+	- "axi-base"
+	- "apb-base"
+- clocks: Must contain an entry for each entry in clock-names.
+		See ../clocks/clock-bindings.txt for details.
+- clock-names: Must include the following entries:
+	- "aclk"
+	- "aclk-perf"
+	- "hclk"
+	- "pm"
+- phys: From PHY bindings: Phandle for the Generic PHY for PCIe.
+- phy-names:  MUST be "pcie-phy".
+- interrupts: Three interrupt entries must be specified.
+- interrupt-names: Must include the following names
+	- "sys"
+	- "legacy"
+	- "client"
+- resets: Must contain five entries for each entry in reset-names.
+	   See ../reset/reset.txt for details.
+- reset-names: Must include the following names
+	- "core"
+	- "mgmt"
+	- "mgmt-sticky"
+	- "pipe"
+- pinctrl-names : The pin control state names
+- pinctrl-0: The "default" pinctrl state
+- interrupt-map-mask and interrupt-map: standard PCI properties
+- interrupt-controller: identifies the node as an interrupt controller
+
+Optional Property:
+- ep-gpios: contain the entry for pre-reset gpio
+- num-lanes: number of lanes to use
+- vpcie3v3-supply: The phandle to the 3.3v regulator to use for pcie. If this
+  is specified we'll defer probe until we can find this regulator.
+- vpcie1v8-supply: The phandle to the 1.8v regulator to use for pcie. If this
+  is specified we'll defer probe until we can find this regulator.
+- vpcie0v9-supply: The phandle to the 0.9v regulator to use for pcie. If this
+  is specified we'll defer probe until we can find this regulator.
+
+Example:
+
+pcie0: pcie@f8000000 {
+	compatible = "rockchip,rk3399-pcie";
+	#address-cells = <3>;
+	#size-cells = <2>;
+	clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
+		 <&cru PCLK_PCIE>;
+	clock-names = "aclk", "aclk-perf",
+		      "hclk";
+	bus-range = <0x0 0x1>;
+	interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
+		     <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
+	interrupt-names: "sys", "legacy", "client";
+	assigned-clocks = <&cru SCLK_PCIEPHY_REF>;
+	assigned-clock-parents = <&cru SCLK_PCIEPHY_REF100M>;
+	assigned-clock-rates = <100000000>;
+	ep-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
+	ranges = < 0x82000000 0 0xfa000000 0x0 0xfa000000 0 0x600000
+		   0x81000000 0 0xfa600000 0x0 0xfa600000 0 0x100000 >;
+	num-lanes = <4>;
+	reg = < 0x0 0xf8000000 0x0 0x2000000 >, < 0x0 0xfd000000 0x0 0x1000000 >;
+	reg-name = "axi-base", "apb-base";
+	resets = <&cru SRST_PCIEPHY>, <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
+		 <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE>;
+	reset-names = "core", "mgmt", "mgmt-sticky", "pipe";
+	phys = <&pcie_phy>;
+	phy-names = "pcie-phy";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie_clkreq>;
+	#interrupt-cells = <1>;
+	interrupt-controller;
+	interrupt-map-mask = <0 0 0 7>;
+	interrupt-map = <0 0 0 1 &pcie0 1>,
+			<0 0 0 2 &pcie0 2>,
+			<0 0 0 3 &pcie0 3>,
+			<0 0 0 4 &pcie0 4>;
+};
-- 
2.3.7

Re: [PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[Marc Zyngier]

On 08/06/16 09:05, Shawn Lin wrote:
> This patch adds a binding that describes the Rockchip PCIe controller
> found on Rockchip SoCs PCIe interface.
> 
> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
> 
> ---
> 
> Changes in v2:
> - fix lots clk/reset stuff suggested by Heiko
> - remove msi-parent and add msi-map suggested by Marc
> - drop phy related stuff
> - some others minor fixes
> 
>  .../devicetree/bindings/pci/rockchip-pcie.txt      | 86 ++++++++++++++++++++++
>  1 file changed, 86 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> 
> diff --git a/Documentation/devicetree/bindings/pci/rockchip-pcie.txt b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> new file mode 100644
> index 0000000..eb92e29
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> @@ -0,0 +1,86 @@
> +* Rockchip AXI PCIe Root Port Bridge DT description
> +
> +Required properties:
> +- #address-cells: Address representation for root ports, set to <3>
> +- #size-cells: Size representation for root ports, set to <2>
> +- #interrupt-cells: specifies the number of cells needed to encode an
> +		interrupt source. The value must be 1.
> +- compatible: Should contain "rockchip,rk3399-pcie"
> +- reg: Two register ranges as listed in the reg-names property
> +- reg-names: Must include the following names
> +	- "axi-base"
> +	- "apb-base"
> +- clocks: Must contain an entry for each entry in clock-names.
> +		See ../clocks/clock-bindings.txt for details.
> +- clock-names: Must include the following entries:
> +	- "aclk"
> +	- "aclk-perf"
> +	- "hclk"
> +	- "pm"
> +- phys: From PHY bindings: Phandle for the Generic PHY for PCIe.
> +- phy-names:  MUST be "pcie-phy".
> +- interrupts: Three interrupt entries must be specified.
> +- interrupt-names: Must include the following names
> +	- "sys"
> +	- "legacy"
> +	- "client"
> +- resets: Must contain five entries for each entry in reset-names.
> +	   See ../reset/reset.txt for details.
> +- reset-names: Must include the following names
> +	- "core"
> +	- "mgmt"
> +	- "mgmt-sticky"
> +	- "pipe"
> +- pinctrl-names : The pin control state names
> +- pinctrl-0: The "default" pinctrl state
> +- interrupt-map-mask and interrupt-map: standard PCI properties
> +- interrupt-controller: identifies the node as an interrupt controller
> +
> +Optional Property:
> +- ep-gpios: contain the entry for pre-reset gpio
> +- num-lanes: number of lanes to use
> +- vpcie3v3-supply: The phandle to the 3.3v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.
> +- vpcie1v8-supply: The phandle to the 1.8v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.
> +- vpcie0v9-supply: The phandle to the 0.9v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.

Please do not describe the behaviour of the driver here.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

Re: [PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[Rob Herring]

On Wed, Jun 08, 2016 at 04:05:17PM +0800, Shawn Lin wrote:
> This patch adds a binding that describes the Rockchip PCIe controller
> found on Rockchip SoCs PCIe interface.
> 
> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
> 
> ---
> 
> Changes in v2:
> - fix lots clk/reset stuff suggested by Heiko
> - remove msi-parent and add msi-map suggested by Marc
> - drop phy related stuff
> - some others minor fixes
> 
>  .../devicetree/bindings/pci/rockchip-pcie.txt      | 86 ++++++++++++++++++++++
>  1 file changed, 86 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> 
> diff --git a/Documentation/devicetree/bindings/pci/rockchip-pcie.txt b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> new file mode 100644
> index 0000000..eb92e29
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> @@ -0,0 +1,86 @@
> +* Rockchip AXI PCIe Root Port Bridge DT description
> +
> +Required properties:
> +- #address-cells: Address representation for root ports, set to <3>
> +- #size-cells: Size representation for root ports, set to <2>
> +- #interrupt-cells: specifies the number of cells needed to encode an
> +		interrupt source. The value must be 1.
> +- compatible: Should contain "rockchip,rk3399-pcie"
> +- reg: Two register ranges as listed in the reg-names property
> +- reg-names: Must include the following names
> +	- "axi-base"
> +	- "apb-base"
> +- clocks: Must contain an entry for each entry in clock-names.
> +		See ../clocks/clock-bindings.txt for details.
> +- clock-names: Must include the following entries:
> +	- "aclk"
> +	- "aclk-perf"
> +	- "hclk"
> +	- "pm"
> +- phys: From PHY bindings: Phandle for the Generic PHY for PCIe.
> +- phy-names:  MUST be "pcie-phy".

phy-names is kind of pointless for 1 phy.

> +- interrupts: Three interrupt entries must be specified.
> +- interrupt-names: Must include the following names
> +	- "sys"
> +	- "legacy"
> +	- "client"
> +- resets: Must contain five entries for each entry in reset-names.
> +	   See ../reset/reset.txt for details.
> +- reset-names: Must include the following names
> +	- "core"
> +	- "mgmt"
> +	- "mgmt-sticky"
> +	- "pipe"
> +- pinctrl-names : The pin control state names
> +- pinctrl-0: The "default" pinctrl state
> +- interrupt-map-mask and interrupt-map: standard PCI properties
> +- interrupt-controller: identifies the node as an interrupt controller
> +
> +Optional Property:
> +- ep-gpios: contain the entry for pre-reset gpio
> +- num-lanes: number of lanes to use
> +- vpcie3v3-supply: The phandle to the 3.3v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.
> +- vpcie1v8-supply: The phandle to the 1.8v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.
> +- vpcie0v9-supply: The phandle to the 0.9v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.
> +
> +Example:
> +
> +pcie0: pcie@f8000000 {
> +	compatible = "rockchip,rk3399-pcie";
> +	#address-cells = <3>;
> +	#size-cells = <2>;
> +	clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
> +		 <&cru PCLK_PCIE>;
> +	clock-names = "aclk", "aclk-perf",
> +		      "hclk";
> +	bus-range = <0x0 0x1>;
> +	interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
> +		     <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
> +	interrupt-names: "sys", "legacy", "client";
> +	assigned-clocks = <&cru SCLK_PCIEPHY_REF>;
> +	assigned-clock-parents = <&cru SCLK_PCIEPHY_REF100M>;
> +	assigned-clock-rates = <100000000>;
> +	ep-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
> +	ranges = < 0x82000000 0 0xfa000000 0x0 0xfa000000 0 0x600000
> +		   0x81000000 0 0xfa600000 0x0 0xfa600000 0 0x100000 >;

No 64-bit memory space?

> +	num-lanes = <4>;
> +	reg = < 0x0 0xf8000000 0x0 0x2000000 >, < 0x0 0xfd000000 0x0 0x1000000 >;
> +	reg-name = "axi-base", "apb-base";
> +	resets = <&cru SRST_PCIEPHY>, <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
> +		 <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE>;
> +	reset-names = "core", "mgmt", "mgmt-sticky", "pipe";
> +	phys = <&pcie_phy>;
> +	phy-names = "pcie-phy";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pcie_clkreq>;
> +	#interrupt-cells = <1>;
> +	interrupt-controller;
> +	interrupt-map-mask = <0 0 0 7>;
> +	interrupt-map = <0 0 0 1 &pcie0 1>,
> +			<0 0 0 2 &pcie0 2>,
> +			<0 0 0 3 &pcie0 3>,
> +			<0 0 0 4 &pcie0 4>;
> +};
> -- 
> 2.3.7
> 
> 

Re: [PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[Doug Anderson]

Shawn,

On Wed, Jun 8, 2016 at 1:05 AM, Shawn Lin <shawn.lin@rock-chips.com> wrote:
> +pcie0: pcie@f8000000 {
> +       compatible = "rockchip,rk3399-pcie";
> +       #address-cells = <3>;
> +       #size-cells = <2>;
> +       clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
> +                <&cru PCLK_PCIE>;
> +       clock-names = "aclk", "aclk-perf",
> +                     "hclk";

Code also requires a "pm" clock.

> +       bus-range = <0x0 0x1>;
> +       interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
> +                    <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
> +       interrupt-names: "sys", "legacy", "client";

Shouldn't be ":", should be "=".


> +       assigned-clocks = <&cru SCLK_PCIEPHY_REF>;
> +       assigned-clock-parents = <&cru SCLK_PCIEPHY_REF100M>;
> +       assigned-clock-rates = <100000000>;
> +       ep-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
> +       ranges = < 0x82000000 0 0xfa000000 0x0 0xfa000000 0 0x600000
> +                  0x81000000 0 0xfa600000 0x0 0xfa600000 0 0x100000 >;

nit: I don't thin it's common to have spaces before/after the ">" and "<".
nit: Be consistent about 0 vs. 0x0 in ranges.


> +       num-lanes = <4>;
> +       reg = < 0x0 0xf8000000 0x0 0x2000000 >, < 0x0 0xfd000000 0x0 0x1000000 >;
> +       reg-name = "axi-base", "apb-base";

Should be "reg-names" (with an "s")


> +       resets = <&cru SRST_PCIEPHY>, <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
> +                <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE>;
> +       reset-names = "core", "mgmt", "mgmt-sticky", "pipe";

You have 5 resets but 4 reset names.  That doesn't seem right.  Code
shows you only getting 4, so presumably you need to remove the
SRST_PCIEPHY one.


-Doug

Re: [PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[Marc Zyngier]

On Wed, 8 Jun 2016 16:05:17 +0800
Shawn Lin <shawn.lin@rock-chips.com> wrote:

> This patch adds a binding that describes the Rockchip PCIe controller
> found on Rockchip SoCs PCIe interface.
> 
> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
> 
> ---
> 
> Changes in v2:
> - fix lots clk/reset stuff suggested by Heiko
> - remove msi-parent and add msi-map suggested by Marc

I noticed this ^^^^ ...

> - drop phy related stuff
> - some others minor fixes
> 
>  .../devicetree/bindings/pci/rockchip-pcie.txt      | 86 ++++++++++++++++++++++
>  1 file changed, 86 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> 
> diff --git a/Documentation/devicetree/bindings/pci/rockchip-pcie.txt b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> new file mode 100644
> index 0000000..eb92e29
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
> @@ -0,0 +1,86 @@
> +* Rockchip AXI PCIe Root Port Bridge DT description
> +
> +Required properties:
> +- #address-cells: Address representation for root ports, set to <3>
> +- #size-cells: Size representation for root ports, set to <2>
> +- #interrupt-cells: specifies the number of cells needed to encode an
> +		interrupt source. The value must be 1.
> +- compatible: Should contain "rockchip,rk3399-pcie"
> +- reg: Two register ranges as listed in the reg-names property
> +- reg-names: Must include the following names
> +	- "axi-base"
> +	- "apb-base"
> +- clocks: Must contain an entry for each entry in clock-names.
> +		See ../clocks/clock-bindings.txt for details.
> +- clock-names: Must include the following entries:
> +	- "aclk"
> +	- "aclk-perf"
> +	- "hclk"
> +	- "pm"
> +- phys: From PHY bindings: Phandle for the Generic PHY for PCIe.
> +- phy-names:  MUST be "pcie-phy".
> +- interrupts: Three interrupt entries must be specified.
> +- interrupt-names: Must include the following names
> +	- "sys"
> +	- "legacy"
> +	- "client"
> +- resets: Must contain five entries for each entry in reset-names.
> +	   See ../reset/reset.txt for details.
> +- reset-names: Must include the following names
> +	- "core"
> +	- "mgmt"
> +	- "mgmt-sticky"
> +	- "pipe"
> +- pinctrl-names : The pin control state names
> +- pinctrl-0: The "default" pinctrl state
> +- interrupt-map-mask and interrupt-map: standard PCI properties
> +- interrupt-controller: identifies the node as an interrupt controller
> +
> +Optional Property:
> +- ep-gpios: contain the entry for pre-reset gpio
> +- num-lanes: number of lanes to use
> +- vpcie3v3-supply: The phandle to the 3.3v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.
> +- vpcie1v8-supply: The phandle to the 1.8v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.
> +- vpcie0v9-supply: The phandle to the 0.9v regulator to use for pcie. If this
> +  is specified we'll defer probe until we can find this regulator.
> +
> +Example:
> +
> +pcie0: pcie@f8000000 {
> +	compatible = "rockchip,rk3399-pcie";
> +	#address-cells = <3>;
> +	#size-cells = <2>;
> +	clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
> +		 <&cru PCLK_PCIE>;
> +	clock-names = "aclk", "aclk-perf",
> +		      "hclk";
> +	bus-range = <0x0 0x1>;
> +	interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
> +		     <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
> +	interrupt-names: "sys", "legacy", "client";
> +	assigned-clocks = <&cru SCLK_PCIEPHY_REF>;
> +	assigned-clock-parents = <&cru SCLK_PCIEPHY_REF100M>;
> +	assigned-clock-rates = <100000000>;
> +	ep-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
> +	ranges = < 0x82000000 0 0xfa000000 0x0 0xfa000000 0 0x600000
> +		   0x81000000 0 0xfa600000 0x0 0xfa600000 0 0x100000 >;
> +	num-lanes = <4>;
> +	reg = < 0x0 0xf8000000 0x0 0x2000000 >, < 0x0 0xfd000000 0x0 0x1000000 >;
> +	reg-name = "axi-base", "apb-base";
> +	resets = <&cru SRST_PCIEPHY>, <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
> +		 <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE>;
> +	reset-names = "core", "mgmt", "mgmt-sticky", "pipe";
> +	phys = <&pcie_phy>;
> +	phy-names = "pcie-phy";
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pcie_clkreq>;
> +	#interrupt-cells = <1>;
> +	interrupt-controller;
> +	interrupt-map-mask = <0 0 0 7>;
> +	interrupt-map = <0 0 0 1 &pcie0 1>,
> +			<0 0 0 2 &pcie0 2>,
> +			<0 0 0 3 &pcie0 3>,
> +			<0 0 0 4 &pcie0 4>;
> +};


And yet I don't see anything related to msi-map in the binding or in
the example. As Doug mentioned issues with MSIs being delivered, I
wonder if the two are related...

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny.

Re: [PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[Shawn Lin]

在 2016/6/10 12:01, Doug Anderson 写道:
> Shawn,
>
> On Wed, Jun 8, 2016 at 1:05 AM, Shawn Lin <shawn.lin@rock-chips.com> wrote:
>> +pcie0: pcie@f8000000 {
>> +       compatible = "rockchip,rk3399-pcie";
>> +       #address-cells = <3>;
>> +       #size-cells = <2>;
>> +       clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
>> +                <&cru PCLK_PCIE>;
>> +       clock-names = "aclk", "aclk-perf",
>> +                     "hclk";
>
> Code also requires a "pm" clock.
>
>> +       bus-range = <0x0 0x1>;
>> +       interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
>> +                    <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
>> +       interrupt-names: "sys", "legacy", "client";
>
> Shouldn't be ":", should be "=".
>
>
>> +       assigned-clocks = <&cru SCLK_PCIEPHY_REF>;
>> +       assigned-clock-parents = <&cru SCLK_PCIEPHY_REF100M>;
>> +       assigned-clock-rates = <100000000>;
>> +       ep-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
>> +       ranges = < 0x82000000 0 0xfa000000 0x0 0xfa000000 0 0x600000
>> +                  0x81000000 0 0xfa600000 0x0 0xfa600000 0 0x100000 >;
>
> nit: I don't thin it's common to have spaces before/after the ">" and "<".
> nit: Be consistent about 0 vs. 0x0 in ranges.
>
>
>> +       num-lanes = <4>;
>> +       reg = < 0x0 0xf8000000 0x0 0x2000000 >, < 0x0 0xfd000000 0x0 0x1000000 >;
>> +       reg-name = "axi-base", "apb-base";
>
> Should be "reg-names" (with an "s")
>
>
>> +       resets = <&cru SRST_PCIEPHY>, <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
>> +                <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE>;
>> +       reset-names = "core", "mgmt", "mgmt-sticky", "pipe";
>
> You have 5 resets but 4 reset names.  That doesn't seem right.  Code
> shows you only getting 4, so presumably you need to remove the
> SRST_PCIEPHY one.

Thanks for catching these above as I forgot to rework the this sample.

>
>
> -Doug
>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip
>


-- 
Best Regards
Shawn Lin

Re: [PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[Shawn Lin]

On 2016/6/9 4:44, Rob Herring wrote:
> On Wed, Jun 08, 2016 at 04:05:17PM +0800, Shawn Lin wrote:
>> This patch adds a binding that describes the Rockchip PCIe controller
>> found on Rockchip SoCs PCIe interface.
>>
>> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
>>
>> ---
>>
>> Changes in v2:
>> - fix lots clk/reset stuff suggested by Heiko
>> - remove msi-parent and add msi-map suggested by Marc
>> - drop phy related stuff
>> - some others minor fixes
>>
>>  .../devicetree/bindings/pci/rockchip-pcie.txt      | 86 ++++++++++++++++++++++
>>  1 file changed, 86 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/pci/rockchip-pcie.txt
>>
>> diff --git a/Documentation/devicetree/bindings/pci/rockchip-pcie.txt b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
>> new file mode 100644
>> index 0000000..eb92e29
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
>> @@ -0,0 +1,86 @@
>> +* Rockchip AXI PCIe Root Port Bridge DT description
>> +
>> +Required properties:
>> +- #address-cells: Address representation for root ports, set to <3>
>> +- #size-cells: Size representation for root ports, set to <2>
>> +- #interrupt-cells: specifies the number of cells needed to encode an
>> +		interrupt source. The value must be 1.
>> +- compatible: Should contain "rockchip,rk3399-pcie"
>> +- reg: Two register ranges as listed in the reg-names property
>> +- reg-names: Must include the following names
>> +	- "axi-base"
>> +	- "apb-base"
>> +- clocks: Must contain an entry for each entry in clock-names.
>> +		See ../clocks/clock-bindings.txt for details.
>> +- clock-names: Must include the following entries:
>> +	- "aclk"
>> +	- "aclk-perf"
>> +	- "hclk"
>> +	- "pm"
>> +- phys: From PHY bindings: Phandle for the Generic PHY for PCIe.
>> +- phy-names:  MUST be "pcie-phy".
>
> phy-names is kind of pointless for 1 phy.

ok, I will remove it.

>
>> +- interrupts: Three interrupt entries must be specified.
>> +- interrupt-names: Must include the following names
>> +	- "sys"
>> +	- "legacy"
>> +	- "client"
>> +- resets: Must contain five entries for each entry in reset-names.
>> +	   See ../reset/reset.txt for details.
>> +- reset-names: Must include the following names
>> +	- "core"
>> +	- "mgmt"
>> +	- "mgmt-sticky"
>> +	- "pipe"
>> +- pinctrl-names : The pin control state names
>> +- pinctrl-0: The "default" pinctrl state
>> +- interrupt-map-mask and interrupt-map: standard PCI properties
>> +- interrupt-controller: identifies the node as an interrupt controller
>> +
>> +Optional Property:
>> +- ep-gpios: contain the entry for pre-reset gpio
>> +- num-lanes: number of lanes to use
>> +- vpcie3v3-supply: The phandle to the 3.3v regulator to use for pcie. If this
>> +  is specified we'll defer probe until we can find this regulator.
>> +- vpcie1v8-supply: The phandle to the 1.8v regulator to use for pcie. If this
>> +  is specified we'll defer probe until we can find this regulator.
>> +- vpcie0v9-supply: The phandle to the 0.9v regulator to use for pcie. If this
>> +  is specified we'll defer probe until we can find this regulator.
>> +
>> +Example:
>> +
>> +pcie0: pcie@f8000000 {
>> +	compatible = "rockchip,rk3399-pcie";
>> +	#address-cells = <3>;
>> +	#size-cells = <2>;
>> +	clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
>> +		 <&cru PCLK_PCIE>;
>> +	clock-names = "aclk", "aclk-perf",
>> +		      "hclk";
>> +	bus-range = <0x0 0x1>;
>> +	interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
>> +		     <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
>> +	interrupt-names: "sys", "legacy", "client";
>> +	assigned-clocks = <&cru SCLK_PCIEPHY_REF>;
>> +	assigned-clock-parents = <&cru SCLK_PCIEPHY_REF100M>;
>> +	assigned-clock-rates = <100000000>;
>> +	ep-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
>> +	ranges = < 0x82000000 0 0xfa000000 0x0 0xfa000000 0 0x600000
>> +		   0x81000000 0 0xfa600000 0x0 0xfa600000 0 0x100000 >;
>
> No 64-bit memory space?

Will fix this example. Thanks for catching this:)

>
>> +	num-lanes = <4>;
>> +	reg = < 0x0 0xf8000000 0x0 0x2000000 >, < 0x0 0xfd000000 0x0 0x1000000 >;
>> +	reg-name = "axi-base", "apb-base";
>> +	resets = <&cru SRST_PCIEPHY>, <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
>> +		 <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE>;
>> +	reset-names = "core", "mgmt", "mgmt-sticky", "pipe";
>> +	phys = <&pcie_phy>;
>> +	phy-names = "pcie-phy";
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pcie_clkreq>;
>> +	#interrupt-cells = <1>;
>> +	interrupt-controller;
>> +	interrupt-map-mask = <0 0 0 7>;
>> +	interrupt-map = <0 0 0 1 &pcie0 1>,
>> +			<0 0 0 2 &pcie0 2>,
>> +			<0 0 0 3 &pcie0 3>,
>> +			<0 0 0 4 &pcie0 4>;
>> +};
>> --
>> 2.3.7
>>
>>
>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip
>


-- 
Best Regards
Shawn Lin

Re: [PATCH v2 1/2] Documentation: bindings: add dt doc for Rockchip PCIe controller

[Doug Anderson]

Marc,

On Fri, Jun 10, 2016 at 12:32 AM, Marc Zyngier <marc.zyngier@arm.com> wrote:
> On Wed, 8 Jun 2016 16:05:17 +0800
> Shawn Lin <shawn.lin@rock-chips.com> wrote:
>
>> This patch adds a binding that describes the Rockchip PCIe controller
>> found on Rockchip SoCs PCIe interface.
>>
>> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
>>
>> ---
>>
>> Changes in v2:
>> - fix lots clk/reset stuff suggested by Heiko
>> - remove msi-parent and add msi-map suggested by Marc
>
> I noticed this ^^^^ ...
>
>> - drop phy related stuff
>> - some others minor fixes
>>
>>  .../devicetree/bindings/pci/rockchip-pcie.txt      | 86 ++++++++++++++++++++++
>>  1 file changed, 86 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/pci/rockchip-pcie.txt
>>
>> diff --git a/Documentation/devicetree/bindings/pci/rockchip-pcie.txt b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
>> new file mode 100644
>> index 0000000..eb92e29
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pci/rockchip-pcie.txt
>> @@ -0,0 +1,86 @@
>> +* Rockchip AXI PCIe Root Port Bridge DT description
>> +
>> +Required properties:
>> +- #address-cells: Address representation for root ports, set to <3>
>> +- #size-cells: Size representation for root ports, set to <2>
>> +- #interrupt-cells: specifies the number of cells needed to encode an
>> +             interrupt source. The value must be 1.
>> +- compatible: Should contain "rockchip,rk3399-pcie"
>> +- reg: Two register ranges as listed in the reg-names property
>> +- reg-names: Must include the following names
>> +     - "axi-base"
>> +     - "apb-base"
>> +- clocks: Must contain an entry for each entry in clock-names.
>> +             See ../clocks/clock-bindings.txt for details.
>> +- clock-names: Must include the following entries:
>> +     - "aclk"
>> +     - "aclk-perf"
>> +     - "hclk"
>> +     - "pm"
>> +- phys: From PHY bindings: Phandle for the Generic PHY for PCIe.
>> +- phy-names:  MUST be "pcie-phy".
>> +- interrupts: Three interrupt entries must be specified.
>> +- interrupt-names: Must include the following names
>> +     - "sys"
>> +     - "legacy"
>> +     - "client"
>> +- resets: Must contain five entries for each entry in reset-names.
>> +        See ../reset/reset.txt for details.
>> +- reset-names: Must include the following names
>> +     - "core"
>> +     - "mgmt"
>> +     - "mgmt-sticky"
>> +     - "pipe"
>> +- pinctrl-names : The pin control state names
>> +- pinctrl-0: The "default" pinctrl state
>> +- interrupt-map-mask and interrupt-map: standard PCI properties
>> +- interrupt-controller: identifies the node as an interrupt controller
>> +
>> +Optional Property:
>> +- ep-gpios: contain the entry for pre-reset gpio
>> +- num-lanes: number of lanes to use
>> +- vpcie3v3-supply: The phandle to the 3.3v regulator to use for pcie. If this
>> +  is specified we'll defer probe until we can find this regulator.
>> +- vpcie1v8-supply: The phandle to the 1.8v regulator to use for pcie. If this
>> +  is specified we'll defer probe until we can find this regulator.
>> +- vpcie0v9-supply: The phandle to the 0.9v regulator to use for pcie. If this
>> +  is specified we'll defer probe until we can find this regulator.
>> +
>> +Example:
>> +
>> +pcie0: pcie@f8000000 {
>> +     compatible = "rockchip,rk3399-pcie";
>> +     #address-cells = <3>;
>> +     #size-cells = <2>;
>> +     clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
>> +              <&cru PCLK_PCIE>;
>> +     clock-names = "aclk", "aclk-perf",
>> +                   "hclk";
>> +     bus-range = <0x0 0x1>;
>> +     interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
>> +                  <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
>> +     interrupt-names: "sys", "legacy", "client";
>> +     assigned-clocks = <&cru SCLK_PCIEPHY_REF>;
>> +     assigned-clock-parents = <&cru SCLK_PCIEPHY_REF100M>;
>> +     assigned-clock-rates = <100000000>;
>> +     ep-gpios = <&gpio3 13 GPIO_ACTIVE_HIGH>;
>> +     ranges = < 0x82000000 0 0xfa000000 0x0 0xfa000000 0 0x600000
>> +                0x81000000 0 0xfa600000 0x0 0xfa600000 0 0x100000 >;
>> +     num-lanes = <4>;
>> +     reg = < 0x0 0xf8000000 0x0 0x2000000 >, < 0x0 0xfd000000 0x0 0x1000000 >;
>> +     reg-name = "axi-base", "apb-base";
>> +     resets = <&cru SRST_PCIEPHY>, <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
>> +              <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE>;
>> +     reset-names = "core", "mgmt", "mgmt-sticky", "pipe";
>> +     phys = <&pcie_phy>;
>> +     phy-names = "pcie-phy";
>> +     pinctrl-names = "default";
>> +     pinctrl-0 = <&pcie_clkreq>;
>> +     #interrupt-cells = <1>;
>> +     interrupt-controller;
>> +     interrupt-map-mask = <0 0 0 7>;
>> +     interrupt-map = <0 0 0 1 &pcie0 1>,
>> +                     <0 0 0 2 &pcie0 2>,
>> +                     <0 0 0 3 &pcie0 3>,
>> +                     <0 0 0 4 &pcie0 4>;
>> +};
>
>
> And yet I don't see anything related to msi-map in the binding or in
> the example. As Doug mentioned issues with MSIs being delivered, I
> wonder if the two are related...

With Shawn's latest patches and following his latest example dts
snippet (which includes the msi-map), things worked much better.  :)

Thank you for your help!

-Doug