From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../devicetree/bindings/net/ti,k3-am654-cpts.yaml  | 145 +++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/ti,k3-am654-cpts.yaml

(limited to 'Documentation/devicetree/bindings/net/ti,k3-am654-cpts.yaml')

diff --git a/Documentation/devicetree/bindings/net/ti,k3-am654-cpts.yaml b/Documentation/devicetree/bindings/net/ti,k3-am654-cpts.yaml
new file mode 100644
index 000000000..6230f5761
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ti,k3-am654-cpts.yaml
@@ -0,0 +1,145 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/ti,k3-am654-cpts.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: The TI AM654x/J721E Common Platform Time Sync (CPTS) module
+
+maintainers:
+  - Grygorii Strashko <grygorii.strashko@ti.com>
+  - Sekhar Nori <nsekhar@ti.com>
+
+description: |+
+  The TI AM654x/J721E CPTS module is used to facilitate host control of time
+  sync operations.
+  Main features of CPTS module are
+  - selection of multiple external clock sources
+  - Software control of time sync events via interrupt or polling
+  - 64-bit timestamp mode in ns with PPM and nudge adjustment.
+  - hardware timestamp push inputs (HWx_TS_PUSH)
+  - timestamp counter compare output (TS_COMP)
+  - timestamp counter bit output (TS_SYNC)
+  - periodic Generator function outputs (TS_GENFx)
+  - Ethernet Enhanced Scheduled Traffic Operations (CPTS_ESTFn) (TSN)
+  - external hardware timestamp push inputs (HWx_TS_PUSH) timestamping
+
+   Depending on integration it enables compliance with the IEEE 1588-2008
+   standard for a precision clock synchronization protocol, Ethernet Enhanced
+   Scheduled Traffic Operations (CPTS_ESTFn) and PCIe Subsystem Precision Time
+   Measurement (PTM).
+
+  TI AM654x/J721E SoCs has several similar CPTS modules integrated into the
+  different parts of the system which could be synchronized with each other
+  - Main CPTS
+  - MCU CPSW CPTS with IEEE 1588-2008 support
+  - PCIe subsystem CPTS for PTM support
+
+  Depending on CPTS module integration and when CPTS is integral part of
+  another module (MCU CPSW for example) "compatible" and "reg" can
+  be omitted - parent module is fully responsible for CPTS enabling and
+  configuration.
+
+properties:
+  $nodename:
+    pattern: "^cpts@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - ti,am65-cpts
+      - ti,j721e-cpts
+
+  reg:
+    maxItems: 1
+    description:
+      The physical base address and size of CPTS IO range
+
+  reg-names:
+    items:
+      - const: cpts
+
+  clocks:
+    maxItems: 1
+    description: CPTS reference clock
+
+  clock-names:
+    items:
+      - const: cpts
+
+  interrupts:
+    items:
+      - description: CPTS events interrupt
+
+  interrupt-names:
+    items:
+      - const: cpts
+
+  assigned-clock-parents: true
+
+  assigned-clocks: true
+
+  power-domains:
+    maxItems: 1
+
+  ti,cpts-ext-ts-inputs:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 8
+    description:
+      Number of hardware timestamp push inputs (HWx_TS_PUSH)
+
+  ti,cpts-periodic-outputs:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 8
+    description:
+      Number of timestamp Generator function outputs (TS_GENFx)
+
+  refclk-mux:
+    type: object
+    additionalProperties: false
+    description: CPTS reference clock multiplexer clock
+    properties:
+      '#clock-cells':
+        const: 0
+
+      clocks:
+        maxItems: 8
+
+    required:
+      - clocks
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    cpts@310d0000 {
+         compatible = "ti,am65-cpts";
+         reg = <0x310d0000 0x400>;
+         reg-names = "cpts";
+         clocks = <&main_cpts_mux>;
+         clock-names = "cpts";
+         interrupts-extended = <&k3_irq 163 0 IRQ_TYPE_LEVEL_HIGH>;
+         interrupt-names = "cpts";
+         ti,cpts-periodic-outputs = <6>;
+         ti,cpts-ext-ts-inputs = <8>;
+
+         main_cpts_mux: refclk-mux {
+               #clock-cells = <0>;
+               clocks = <&k3_clks 118 5>, <&k3_clks 118 11>,
+                        <&k3_clks 157 91>, <&k3_clks 157 77>,
+                        <&k3_clks 157 102>, <&k3_clks 157 80>,
+                        <&k3_clks 120 3>, <&k3_clks 121 3>;
+               assigned-clocks = <&main_cpts_mux>;
+               assigned-clock-parents = <&k3_clks 118 11>;
+         };
+    };
-- 
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