On Wed, Nov 06, 2019 at 10:45:24PM +0100, Nicolas Saenz Julienne wrote:
> This enables bcm2711's PCIe bus, wich is hardwired to a VIA Technologies
s/wich/which/
> XHCI USB 3.0 controller.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>
> ---
> arch/arm/boot/dts/bcm2711.dtsi | 47 ++++++++++++++++++++++++++++++++++
> 1 file changed, 47 insertions(+)
>
> diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
> index a9d84e28f245..c7b2e7b57da6 100644
> --- a/arch/arm/boot/dts/bcm2711.dtsi
> +++ b/arch/arm/boot/dts/bcm2711.dtsi
> @@ -288,6 +288,53 @@
> arm,cpu-registers-not-fw-configured;
> };
>
> + scb {
> + compatible = "simple-bus";
> + #address-cells = <2>;
> + #size-cells = <1>;
> +
> + ranges = <0x0 0x7c000000 0x0 0xfc000000 0x03800000>,
> + <0x6 0x00000000 0x6 0x00000000 0x40000000>;
> +
> + pcie_0: pcie@7d500000 {
> + compatible = "brcm,bcm2711-pcie";
> + reg = <0x0 0x7d500000 0x9310>;
> + msi-controller;
> + msi-parent = <&pcie_0>;
> + #address-cells = <3>;
> + #interrupt-cells = <1>;
> + #size-cells = <2>;
> + linux,pci-domain = <0>;
pci-domain is unlikely to be needed here.
> + brcm,enable-ssc;
> + interrupts = <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "pcie", "msi";
> + interrupt-map-mask = <0x0 0x0 0x0 0x7>;
> + interrupt-map = <0 0 0 1 &gicv2 GIC_SPI 143
> + IRQ_TYPE_LEVEL_HIGH
> + 0 0 0 2 &gicv2 GIC_SPI 144
> + IRQ_TYPE_LEVEL_HIGH
> + 0 0 0 3 &gicv2 GIC_SPI 145
> + IRQ_TYPE_LEVEL_HIGH
> + 0 0 0 4 &gicv2 GIC_SPI 146
> + IRQ_TYPE_LEVEL_HIGH>;
> +
> + ranges = <0x02000000 0x0 0xf8000000 0x6 0x00000000
> + 0x0 0x04000000>;
Is legacy I/O supported by this controller?
> + /*
> + * The wrapper around the PCIe block has a bug
> + * preventing it from accessing beyond the first 3GB of
> + * memory. As the bus DMA mask is rounded up to the
> + * closest power of two of the dma-range size, we're
> + * forced to set the limit at 2GB. This can be
> + * harmlessly changed in the future once the DMA code
> + * handles non power of two DMA limits.
> + */
> + dma-ranges = <0x02000000 0x0 0x00000000 0x0 0x00000000
> + 0x0 0x80000000>;
> + };
> + };
Thanks,
Andrew Murray
> +
> cpus: cpus {
> #address-cells = <1>;
> #size-cells = <0>;
> --
> 2.23.0
>
