The i.MX SoCs have various power domain configurations routed into
the PCIe IP. MX6SX is the only one which contains 2 domains and also
uses power-domain-names. MX6QDL do not use any domains. All the rest
uses one domain and does not use power-domain-names anymore.
Document all those configurations in the DT binding document.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Marek Vasut <marex@xxxxxxx>
---
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Cc: Richard Zhu <hongxing.zhu@xxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: NXP Linux Team <linux-imx@xxxxxxx>
To: devicetree@xxxxxxxxxxxxxxx
---
V2: - Keep the power-domains description in the main section
V3: - Move power-domains back where they were originally (fixes V2)
- Do not use else: in allOf section
V4: - Special-case MX6Q and MX6QP in allOf section since they dont use PDs
- Drop minItems: from power-domains main section
- Handle anything which is not MX6SX,MX6Q,MX6QP as having one PD
V5: - Add RB from Krzysztof
---
.../bindings/pci/fsl,imx6q-pcie.yaml | 43 +++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index 2df73be0ffbea..b14c12a47cc1c 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
@@ -69,6 +69,7 @@ properties:
required properties for imx7d-pcie and imx8mq-pcie.
power-domains:
+ minItems: 1
items:
- description: The phandle pointing to the DISPLAY domain for
imx6sx-pcie, to PCIE_PHY power domain for imx7d-pcie and
@@ -77,6 +78,7 @@ properties:
for imx6sx-pcie.
power-domain-names:
+ minItems: 1
items:
- const: pcie
- const: pcie_phy
@@ -240,6 +242,47 @@ allOf:
- const: pcie_bus
- const: pcie_aux
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: fsl,imx6sx-pcie
+ then:
+ properties:
+ power-domains:
+ minItems: 2
+ maxItems: 2
+ power-domain-names:
+ minItems: 2
+ maxItems: 2
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx6q-pcie
+ - fsl,imx6qp-pcie
+ then:
+ properties:
+ power-domains: false
+ power-domain-names: false
+
+ - if:
+ not:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx6sx-pcie
+ - fsl,imx6q-pcie
+ - fsl,imx6qp-pcie
+ then:
+ properties:
+ power-domains:
+ maxItems: 1
+ power-domain-names: false
+
examples:
- |
#include <dt-bindings/clock/imx6qdl-clock.h>
--
2.35.1
