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From:   Herve Codina <herve.codina@bootlin.com>
To:     Herve Codina <herve.codina@bootlin.com>,
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Cc:     netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
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Subject: [PATCH v5 08/31] dt-bindings: soc: fsl: cpm_qe: cpm1-scc-qmc: Add support for QMC HDLC
Date:   Tue, 12 Sep 2023 12:10:18 +0200
Message-ID: <20230912101018.225246-1-herve.codina@bootlin.com>
In-Reply-To: <20230912081527.208499-1-herve.codina@bootlin.com>
References: <20230912081527.208499-1-herve.codina@bootlin.com>
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The QMC (QUICC mutichannel controller) is a controller present in some
PowerQUICC SoC such as MPC885.
The QMC HDLC uses the QMC controller to transfer HDLC data.

Additionally, a framer can be connected to the QMC HDLC.
If present, this framer is the interface between the TDM bus used by the
QMC HDLC and the E1/T1 line.
The QMC HDLC can use this framer to get information about the E1/T1 line
and configure the E1/T1 line.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 .../bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml   | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
index 82d9beb48e00..b5073531f3f1 100644
--- a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
+++ b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml
@@ -101,6 +101,16 @@ patternProperties:
           Channel assigned Rx time-slots within the Rx time-slots routed by the
           TSA to this cell.
 
+      compatible:
+        const: fsl,qmc-hdlc
+
+      fsl,framer:
+        $ref: /schemas/types.yaml#/definitions/phandle
+        description:
+          phandle to the framer node. The framer is in charge of an E1/T1 line
+          interface connected to the TDM bus. It can be used to get the E1/T1 line
+          status such as link up/down.
+
     required:
       - reg
       - fsl,tx-ts-mask
@@ -159,5 +169,8 @@ examples:
             fsl,operational-mode = "hdlc";
             fsl,tx-ts-mask = <0x00000000 0x0000ff00>;
             fsl,rx-ts-mask = <0x00000000 0x0000ff00>;
+
+            compatible = "fsl,qmc-hdlc";
+            fsl,framer = <&framer>;
         };
     };
-- 
2.41.0