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Message-ID: <20230206060708.3574472-2-danishanwar@ti.com>
Date: Mon, 6 Feb 2023 11:37:07 +0530
From: MD Danish Anwar <danishanwar@...com>
To: "Andrew F. Davis" <afd@...com>, Suman Anna <s-anna@...com>,
Roger Quadros <rogerq@...nel.org>,
YueHaibing <yuehaibing@...wei.com>,
MD Danish Anwar <danishanwar@...com>,
Vignesh Raghavendra <vigneshr@...com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Jakub Kicinski <kuba@...nel.org>,
Eric Dumazet <edumazet@...gle.com>,
"David S. Miller" <davem@...emloft.net>, <andrew@...n.ch>
CC: <nm@...com>, <ssantosh@...nel.org>, <srk@...com>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<netdev@...r.kernel.org>, <linux-omap@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v4 1/2] dt-bindings: net: Add ICSSG Ethernet Driver bindings
From: Puranjay Mohan <p-mohan@...com>
Add a YAML binding document for the ICSSG Programmable real time unit
based Ethernet driver. This driver uses the PRU and PRUSS consumer APIs
to interface the PRUs and load/run the firmware for supporting ethernet
functionality.
Signed-off-by: Puranjay Mohan <p-mohan@...com>
Signed-off-by: Md Danish Anwar <danishanwar@...com>
---
.../bindings/net/ti,icssg-prueth.yaml | 179 ++++++++++++++++++
1 file changed, 179 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
diff --git a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
new file mode 100644
index 000000000000..e4dee01a272a
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
@@ -0,0 +1,179 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/ti,icssg-prueth.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments ICSSG PRUSS Ethernet
+
+maintainers:
+ - Md Danish Anwar <danishanwar@...com>
+
+description:
+ Ethernet based on the Programmable Real-Time
+ Unit and Industrial Communication Subsystem.
+
+allOf:
+ - $ref: /schemas/remoteproc/ti,pru-consumer.yaml#
+
+properties:
+ compatible:
+ enum:
+ - ti,am654-icssg-prueth # for AM65x SoC family
+
+ ti,sram:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ phandle to MSMC SRAM node
+
+ dmas:
+ maxItems: 10
+
+ dma-names:
+ items:
+ - const: tx0-0
+ - const: tx0-1
+ - const: tx0-2
+ - const: tx0-3
+ - const: tx1-0
+ - const: tx1-1
+ - const: tx1-2
+ - const: tx1-3
+ - const: rx0
+ - const: rx1
+
+ ethernet-ports:
+ type: object
+ additionalProperties: false
+ properties:
+ '#address-cells':
+ const: 1
+ '#size-cells':
+ const: 0
+
+ patternProperties:
+ ^port@[0-1]$:
+ type: object
+ description: ICSSG PRUETH external ports
+
+ $ref: ethernet-controller.yaml#
+
+ unevaluatedProperties: false
+
+ properties:
+ reg:
+ items:
+ - enum: [0, 1]
+ description: ICSSG PRUETH port number
+
+ interrupts-extended:
+ maxItems: 1
+
+ ti,syscon-rgmii-delay:
+ items:
+ - items:
+ - description: phandle to system controller node
+ - description: The offset to ICSSG control register
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description:
+ phandle to system controller node and register offset
+ to ICSSG control register for RGMII transmit delay
+
+ required:
+ - reg
+
+ ti,mii-g-rt:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: |
+ phandle to MII_G_RT module's syscon regmap.
+
+ ti,mii-rt:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: |
+ phandle to MII_RT module's syscon regmap
+
+ interrupts:
+ maxItems: 2
+ description: |
+ Interrupt specifiers to TX timestamp IRQ.
+
+ interrupt-names:
+ items:
+ - const: tx_ts0
+ - const: tx_ts1
+
+required:
+ - compatible
+ - ti,sram
+ - dmas
+ - dma-names
+ - ethernet-ports
+ - ti,mii-g-rt
+ - interrupts
+ - interrupt-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ /* Example k3-am654 base board SR2.0, dual-emac */
+ pruss2_eth: ethernet {
+ compatible = "ti,am654-icssg-prueth";
+ pinctrl-names = "default";
+ pinctrl-0 = <&icssg2_rgmii_pins_default>;
+ ti,sram = <&msmc_ram>;
+
+ ti,prus = <&pru2_0>, <&rtu2_0>, <&tx_pru2_0>,
+ <&pru2_1>, <&rtu2_1>, <&tx_pru2_1>;
+ firmware-name = "ti-pruss/am65x-pru0-prueth-fw.elf",
+ "ti-pruss/am65x-rtu0-prueth-fw.elf",
+ "ti-pruss/am65x-txpru0-prueth-fw.elf",
+ "ti-pruss/am65x-pru1-prueth-fw.elf",
+ "ti-pruss/am65x-rtu1-prueth-fw.elf",
+ "ti-pruss/am65x-txpru1-prueth-fw.elf";
+ ti,pruss-gp-mux-sel = <2>, /* MII mode */
+ <2>,
+ <2>,
+ <2>, /* MII mode */
+ <2>,
+ <2>;
+ dmas = <&main_udmap 0xc300>, /* egress slice 0 */
+ <&main_udmap 0xc301>, /* egress slice 0 */
+ <&main_udmap 0xc302>, /* egress slice 0 */
+ <&main_udmap 0xc303>, /* egress slice 0 */
+ <&main_udmap 0xc304>, /* egress slice 1 */
+ <&main_udmap 0xc305>, /* egress slice 1 */
+ <&main_udmap 0xc306>, /* egress slice 1 */
+ <&main_udmap 0xc307>, /* egress slice 1 */
+ <&main_udmap 0x4300>, /* ingress slice 0 */
+ <&main_udmap 0x4301>; /* ingress slice 1 */
+ dma-names = "tx0-0", "tx0-1", "tx0-2", "tx0-3",
+ "tx1-0", "tx1-1", "tx1-2", "tx1-3",
+ "rx0", "rx1";
+ ti,mii-g-rt = <&icssg2_mii_g_rt>;
+ interrupts = <24 0 2>, <25 1 3>;
+ interrupt-names = "tx_ts0", "tx_ts1";
+ ethernet-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pruss2_emac0: port@0 {
+ reg = <0>;
+ phy-handle = <&pruss2_eth0_phy>;
+ phy-mode = "rgmii-id";
+ interrupts-extended = <&icssg2_intc 24>;
+ ti,syscon-rgmii-delay = <&scm_conf 0x4120>;
+ /* Filled in by bootloader */
+ local-mac-address = [00 00 00 00 00 00];
+ };
+
+ pruss2_emac1: port@1 {
+ reg = <1>;
+ phy-handle = <&pruss2_eth1_phy>;
+ phy-mode = "rgmii-id";
+ interrupts-extended = <&icssg2_intc 25>;
+ ti,syscon-rgmii-delay = <&scm_conf 0x4124>;
+ /* Filled in by bootloader */
+ local-mac-address = [00 00 00 00 00 00];
+ };
+ };
+ };
--
2.25.1
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