On Wed, Aug 19, 2015 at 3:22 AM, Dinh Nguyen <dinh.linux@xxxxxxxxx> wrote:
> On Mon, Aug 17, 2015 at 4:09 AM, Ley Foon Tan <lftan@xxxxxxxxxx> wrote:
>> This patch adds the bindings for Altera PCIe host controller driver and
>> Altera PCIe MSI driver.
>>
>> Signed-off-by: Ley Foon Tan <lftan@xxxxxxxxxx>
>> ---
>> .../devicetree/bindings/pci/altera-pcie-msi.txt | 27 ++++++++++++
>> .../devicetree/bindings/pci/altera-pcie.txt | 49 ++++++++++++++++++++++
>> 2 files changed, 76 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
>> create mode 100644 Documentation/devicetree/bindings/pci/altera-pcie.txt
>>
>> diff --git a/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt b/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
>> new file mode 100644
>> index 0000000..7f330c9
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
>> @@ -0,0 +1,27 @@
>> +* Altera PCIe MSI controller
>> +
>> +Required properties:
>> +- compatible: should contain "altr,msi-1.0"
>> +- reg: specifies the physical base address of the controller and
>> + the length of the memory mapped region.
>> +- reg-names: Must include the following entries:
>> + "csr": CSR registers
>> + "vector_slave": vectors region
>
> Can you be a little bit more specific here? What is a vectors region?
> Also, I'm not 100% sure, but I think "vector-slave" should be used.
This parameter is the Avalon slave name in MSI IP hardware. It is auto
generated from dts generator.
I can add more description for it here.
>
>> +-interrupts: specifies the interrupt source of the parent interrupt
>> + controller. The format of the interrupt specifier depends on the
>> + parent interrupt controller.
>
> Need to document "interrupt-parent" .
Okay.
>
>> +- num-vectors: Number of vectors, range 1 to 32.
>> +- msi-controller: indicates that this is MSI controller node
>> +
>> +
>> +Example
>> +msi0: msi@0xFF200000 {
>> + compatible = "altr,msi-1.0";
>> + reg = <0xFF200000 0x00000010
>> + 0xFF200010 0x00000080>;
>> + reg-names = "csr", "vector_slave";
>> + interrupt-parent = <&hps_0_arm_gic_0>;
>> + interrupts = <0 42 4>;
>> + msi-controller = <1>;
>> + num-vectors = <32>;
>> +};
>> diff --git a/Documentation/devicetree/bindings/pci/altera-pcie.txt b/Documentation/devicetree/bindings/pci/altera-pcie.txt
>> new file mode 100644
>> index 0000000..73a8dc0
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pci/altera-pcie.txt
>> @@ -0,0 +1,49 @@
>> +* Altera PCIe controller
>> +
>> +Required properties:
>> +- compatible : should contain "altr,pcie-root-port-1.0"
>> +- reg: A list of physical base address and length for TXS and CRA.
>> +- reg-names: Must include the following entries:
>> + "Txs" or "txs": TXS region
>
> What is a TXS region?
It is TX slave port in PCIe IP. I can update this.
>
>> + "Cra" or "cra": Control register access region
>> +-interrupts: specifies the interrupt source of the parent interrupt controller.
>> + The format of the interrupt specifier depends on the parent interrupt
>> + controller.
>> +- device_type: must be "pci"
>> +- #address-cells: set to <3>
>> +- #size-cells: set to <2>
>> +- #interrupt-cells: set to <1>
>> +- ranges: Describes the translation of addresses for root ports and standard
>> + PCI regions.
>> +- interrupt-map-mask and interrupt-map: standard PCI properties
>> + to define the mapping of the PCIe interface to interrupt
>> + numbers.
>
> "interrupt-parent" ?
Will add it.
Thanks.
Regards
Ley Foon
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