[PATCH 1/3] dt-bindings: imx6q-pcie: Handle various clock configurations

Marek Vasut
2022-11-02T21:59:05Z

The i.MX SoCs have various clock configurations routed into the PCIe IP,
the list of clock is below. Document all those configurations in the DT
binding document.

All SoCs: pcie, pcie_bus
6QDL, 7D: + pcie_phy
6SX: + pcie_phy pcie_inbound_axi
8MQ: + pcie_phy pcie_aux
8MM, 8MP: + pcie_aux

Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: NXP Linux Team <linux-imx@nxp.com>
To: devicetree@vger.kernel.org
---
.../bindings/pci/fsl,imx6q-pcie.yaml | 74 +++++++++++++++++--
1 file changed, 69 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index 376e739bcad40..1cfea8ca72576 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
@@ -14,9 +14,6 @@ description: |+
This PCIe host controller is based on the Synopsys DesignWare PCIe IP
and thus inherits all the common properties defined in snps,dw-pcie.yaml.

-allOf:
- - $ref: /schemas/pci/snps,dw-pcie.yaml#
-
properties:
compatible:
enum:
@@ -60,8 +57,8 @@ properties:
items:
- const: pcie
- const: pcie_bus
- - const: pcie_phy
- - const: pcie_inbound_axi for imx6sx-pcie, pcie_aux for imx8mq-pcie
+ - enum: [pcie_phy, pcie_aux]
+ - enum: [pcie_inbound_axi, pcie_aux]

num-lanes:
const: 1
@@ -177,6 +174,73 @@ required:

unevaluatedProperties: false

+allOf:
+ - $ref: /schemas/pci/snps,dw-pcie.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx6sx-pcie
+ - fsl,imx8mq-pcie
+ then:
+ properties:
+ clocks:
+ maxItems: 4
+ clock-names:
+ maxItems: 4
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: fsl,imx6sx-pcie
+ then:
+ properties:
+ clock-names:
+ items:
+ - const: pcie
+ - const: pcie_bus
+ - const: pcie_phy
+ - const: pcie_inbound_axi
+ else:
+ if:
+ properties:
+ compatible:
+ contains:
+ const: fsl,imx8mq-pcie
+ then:
+ properties:
+ clock-names:
+ items:
+ - const: pcie
+ - const: pcie_bus
+ - const: pcie_phy
+ - const: pcie_aux
+ else:
+ if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx8mm-pcie
+ - fsl,imx8mp-pcie
+ then:
+ properties:
+ clock-names:
+ items:
+ - const: pcie
+ - const: pcie_bus
+ - const: pcie_aux
+ else:
+ properties:
+ clock-names:
+ items:
+ - const: pcie
+ - const: pcie_bus
+ - const: pcie_phy
+
examples:
- |
#include <dt-bindings/clock/imx6qdl-clock.h>
--
2.35.1