On Wed, Jul 21, 2021 at 3:39 AM Mauro Carvalho Chehab
<mchehab+huawei@xxxxxxxxxx> wrote:
>
> From: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
>
> Add DTS bindings for the HiKey 970 board's PCIe hardware.
>
> Co-developed-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
> ---
> arch/arm64/boot/dts/hisilicon/hi3670.dtsi | 71 +++++++++++++++++++
> .../boot/dts/hisilicon/hikey970-pmic.dtsi | 1 -
> drivers/pci/controller/dwc/pcie-kirin.c | 12 ----
> 3 files changed, 71 insertions(+), 13 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/hisilicon/hi3670.dtsi b/arch/arm64/boot/dts/hisilicon/hi3670.dtsi
> index 1f228612192c..6dfcfcfeedae 100644
> --- a/arch/arm64/boot/dts/hisilicon/hi3670.dtsi
> +++ b/arch/arm64/boot/dts/hisilicon/hi3670.dtsi
> @@ -177,6 +177,12 @@ sctrl: sctrl@fff0a000 {
> #clock-cells = <1>;
> };
>
> + pmctrl: pmctrl@fff31000 {
> + compatible = "hisilicon,hi3670-pmctrl", "syscon";
> + reg = <0x0 0xfff31000 0x0 0x1000>;
> + #clock-cells = <1>;
> + };
> +
> iomcu: iomcu@ffd7e000 {
> compatible = "hisilicon,hi3670-iomcu", "syscon";
> reg = <0x0 0xffd7e000 0x0 0x1000>;
> @@ -660,6 +666,71 @@ gpio28: gpio@fff1d000 {
> clock-names = "apb_pclk";
> };
>
> + its_pcie: interrupt-controller@f4000000 {
> + compatible = "arm,gic-v3-its";
> + msi-controller;
> + reg = <0x0 0xf5100000 0x0 0x100000>;
How does this h/w have a GIC-400 (which is GICv2) and then a GIC v3 ITS?
> + };
> +
> + pcie_phy: pcie-phy@fc000000 {
> + compatible = "hisilicon,hi970-pcie-phy";
> + reg = <0x0 0xfc000000 0x0 0x80000>;
> +
> + phy-supply = <&ldo33>;
> +
> + clocks = <&crg_ctrl HI3670_CLK_GATE_PCIEPHY_REF>,
> + <&crg_ctrl HI3670_CLK_GATE_PCIEAUX>,
> + <&crg_ctrl HI3670_PCLK_GATE_PCIE_PHY>,
> + <&crg_ctrl HI3670_PCLK_GATE_PCIE_SYS>,
> + <&crg_ctrl HI3670_ACLK_GATE_PCIE>;
> + clock-names = "phy_ref", "aux",
> + "apb_phy", "apb_sys",
> + "aclk";
> +
> + reset-gpios = <&gpio7 0 0 >, <&gpio25 2 0 >,
> + <&gpio3 1 0 >, <&gpio27 4 0 >;
> +
> + clkreq-gpios = <&gpio20 6 0 >, <&gpio27 3 0 >,
> + <&gpio17 0 0 >;
> +
> + /* vboost iboost pre post main */
> + hisilicon,eye-diagram-param = <0xFFFFFFFF 0xFFFFFFFF
> + 0xFFFFFFFF 0xFFFFFFFF
> + 0xFFFFFFFF>;
> +
> + #phy-cells = <0>;
> + };
> +
> + pcie@f4000000 {
> + compatible = "hisilicon,kirin970-pcie";
> + reg = <0x0 0xf4000000 0x0 0x1000000>,
> + <0x0 0xfc180000 0x0 0x1000>,
> + <0x0 0xf5000000 0x0 0x2000>;
> + reg-names = "dbi", "apb", "config";
> + bus-range = <0x0 0x1>;
> + msi-parent = <&its_pcie>;
This means the PCI host doesn't have a MSI controller...
> + #address-cells = <3>;
> + #size-cells = <2>;
> + device_type = "pci";
> + phys = <&pcie_phy>;
> + ranges = <0x02000000 0x0 0x00000000
> + 0x0 0xf6000000
> + 0x0 0x02000000>;
> + num-lanes = <1>;
> + #interrupt-cells = <1>;
> + interrupts = <0 283 4>;
> + interrupt-names = "msi";
But then this says it does...
