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| author | Krishna chaitanya chundru <quic_krichai@quicinc.com> | 2023-07-19 10:20:15 +0300 |
|---|---|---|
| committer | Krzysztof Wilczyński <kwilczynski@kernel.org> | 2023-08-29 14:59:38 +0300 |
| commit | e590ad240ff0d4924ad5b0648634d391fbb2e40f (patch) | |
| tree | 3c47faa7ed608640d2f202fd16df9950159f0b68 /Documentation/devicetree/bindings/pci | |
| parent | 823de40c94d680ec8d57a660ac96a653acadb0a5 (diff) | |
| download | linux-e590ad240ff0d4924ad5b0648634d391fbb2e40f.tar.xz | |
dt-bindings: PCI: qcom: ep: Add interconnects path
Some platforms may not boot if a device driver doesn't
initialize the interconnect path. Mostly it is handled
by the bootloader but we have starting to see cases
where bootloader simply ignores them.
Add the "pcie-mem" & "cpu-pcie" interconnect path as a required
property to the bindings.
Link: https://lore.kernel.org/linux-pci/1689751218-24492-2-git-send-email-quic_krichai@quicinc.com
Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pci')
| -rw-r--r-- | Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml index 811112255d7d..e553341f8620 100644 --- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml @@ -71,6 +71,14 @@ properties: description: GPIO used as WAKE# output signal maxItems: 1 + interconnects: + maxItems: 2 + + interconnect-names: + items: + - const: pcie-mem + - const: cpu-pcie + resets: maxItems: 1 @@ -98,6 +106,8 @@ required: - interrupts - interrupt-names - reset-gpios + - interconnects + - interconnect-names - resets - reset-names - power-domains @@ -167,7 +177,9 @@ examples: - | #include <dt-bindings/clock/qcom,gcc-sdx55.h> #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interconnect/qcom,sdx55.h> #include <dt-bindings/interrupt-controller/arm-gic.h> + pcie_ep: pcie-ep@1c00000 { compatible = "qcom,sdx55-pcie-ep"; reg = <0x01c00000 0x3000>, @@ -194,6 +206,9 @@ examples: interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>; interrupt-names = "global", "doorbell"; + interconnects = <&system_noc MASTER_PCIE &mc_virt SLAVE_EBI_CH0>, + <&mem_noc MASTER_AMPSS_M0 &system_noc SLAVE_PCIE_0>; + interconnect-names = "pcie-mem", "cpu-pcie"; reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>; wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>; resets = <&gcc GCC_PCIE_BCR>; |