On Fri, Apr 24, 2020 at 8:10 AM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote:
>
> Add PCI Host controller node for Loongson64 with RS780E PCH dts.
> Note that PCI interrupts are probed via legacy way, as different
> machine have different interrupt arrangement, we can't cover all
> of them in dt.
>
> Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
> --
> v2: Clean-up
> ---
> arch/mips/boot/dts/loongson/rs780e-pch.dtsi | 17 ++++++++++++++++-
> 1 file changed, 16 insertions(+), 1 deletion(-)
>
> diff --git a/arch/mips/boot/dts/loongson/rs780e-pch.dtsi b/arch/mips/boot/dts/loongson/rs780e-pch.dtsi
> index 8687c4f7370a..5e68ceae20ca 100644
> --- a/arch/mips/boot/dts/loongson/rs780e-pch.dtsi
> +++ b/arch/mips/boot/dts/loongson/rs780e-pch.dtsi
> @@ -5,10 +5,25 @@ bus@10000000 {
> compatible = "simple-bus";
> #address-cells = <2>;
> #size-cells = <2>;
> - ranges = <0 0x10000000 0 0x10000000 0 0x10000000
> + ranges = <0 0x00000000 0 0x00000000 0 0x00010000 /* I/O Ports */
You're changing the first entry, so bus@10000000 unit-address should change.
Are i/o addresses really at 0x0 physical address?
> + 0 0x10000000 0 0x10000000 0 0x10000000
> 0 0x40000000 0 0x40000000 0 0x40000000
> 0xfd 0xfe000000 0xfd 0xfe000000 0 0x2000000 /* PCI Config Space */>;
>
> + pci@1a000000 {
> + compatible = "loongson,rs780e-pci";
> + device_type = "pci";
> + #address-cells = <3>;
> + #size-cells = <2>;
> +
> + reg = <0 0x1a000000 0 0x02000000>;
> +
> + ranges = <0x01000000 0 0x00004000 0 0x00004000 0 0x00004000>,
> + <0x02000000 0 0x40000000 0 0x40000000 0 0x40000000>;
> +
> + bus-range = <0x00 0xff>;
Not needed.
> + };
> +
> isa {
> compatible = "isa";
> #address-cells = <2>;
> --
> 2.26.0.rc2
>
