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.
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
---
.../bindings/pci/fsl,imx6q-pcie.yaml | 55 ++++++++++++++-----
1 file changed, 42 insertions(+), 13 deletions(-)
diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index 1cfea8ca72576..2087dab95d679 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
@@ -68,19 +68,6 @@ properties:
description: A phandle to an fsl,imx7d-pcie-phy node. Additional
required properties for imx7d-pcie and imx8mq-pcie.
- power-domains:
- items:
- - description: The phandle pointing to the DISPLAY domain for
- imx6sx-pcie, to PCIE_PHY power domain for imx7d-pcie and
- imx8mq-pcie.
- - description: The phandle pointing to the PCIE_PHY power domains
- for imx6sx-pcie.
-
- power-domain-names:
- items:
- - const: pcie
- - const: pcie_phy
-
resets:
maxItems: 3
description: Phandles to PCIe-related reset lines exposed by SRC
@@ -132,6 +119,19 @@ properties:
phy-names:
const: pcie-phy
+ 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
+ imx8mq-pcie.
+ - description: The phandle pointing to the PCIE_PHY power domains
+ for imx6sx-pcie.
+ power-domain-names:
+ items:
+ - const: pcie
+ - const: pcie_phy
+
reset-gpio:
description: Should specify the GPIO for controlling the PCI bus device
reset signal. It's not polarity aware and defaults to active-low reset
@@ -241,6 +241,35 @@ allOf:
- const: pcie_bus
- const: pcie_phy
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: fsl,imx6sx-pcie
+ then:
+ properties:
+ power-domains:
+ minItems: 2
+ maxItems: 2
+ power-domain-names:
+ minItems: 2
+ maxItems: 2
+ else:
+ if:
+ not:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx6q-pcie
+ - fsl,imx6qp-pcie
+ then:
+ properties:
+ power-domains:
+ minItems: 1
+ maxItems: 1
+ power-domain-names: false
+
examples:
- |
#include <dt-bindings/clock/imx6qdl-clock.h>
--
2.35.1
