dt-bindings: ptp: Convert ptp-qoirq to yaml format

Convert ptp-qoirq from txt to yaml format.

Additional change:
- Fixed example interrupts proptery. Need only 1 irq by check MPC8313 spec.
- Move Reference clock context under clk,sel.
- Interrupts is not required property.
- Use low case for hex value.
- Check reference manual of MPC8313, p1010 and so on, which dts use more
than 1 irqs. Only 1 irq for each ptp device. Check driver code
(drivers/ptp/ptp_qoriq.c) and only 1 irq used. So original description is
wrong.
- Remove comments for compatible string.

Signed-off-by: Frank Li <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: nxpfrankli

Documentation/devicetree/bindings/net/fsl-fman.txt

@@ -237,7 +237,7 @@ Refer to Documentation/devicetree/bindings/net/fsl,fman-dtsec.yaml
 ============================================================================
 FMan IEEE 1588 Node
 
-Refer to Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
+Refer to Documentation/devicetree/bindings/ptp/fsl,ptp.yaml
 
 =============================================================================
 FMan MDIO Node

Documentation/devicetree/bindings/net/fsl-tsec-phy.txt

@@ -86,4 +86,4 @@ Example:
 
 * Gianfar PTP clock nodes
 
-Refer to Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
+Refer to Documentation/devicetree/bindings/ptp/fsl,ptp.yaml

Documentation/devicetree/bindings/ptp/fsl,ptp.yaml

@@ -0,0 +1,144 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ptp/fsl,ptp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale QorIQ 1588 timer based PTP clock
+
+maintainers:
+  - Frank Li <[email protected]>
+
+properties:
+  compatible:
+    enum:
+      - fsl,etsec-ptp
+      - fsl,fman-ptp-timer
+      - fsl,dpaa2-ptp
+      - fsl,enetc-ptp
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  fsl,cksel:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Timer reference clock source.
+
+      Reference clock source is determined by the value, which is holded
+      in CKSEL bits in TMR_CTRL register. "fsl,cksel" property keeps the
+      value, which will be directly written in those bits, that is why,
+      according to reference manual, the next clock sources can be used:
+
+      For eTSEC,
+      <0> - external high precision timer reference clock (TSEC_TMR_CLK
+            input is used for this purpose);
+      <1> - eTSEC system clock;
+      <2> - eTSEC1 transmit clock;
+      <3> - RTC clock input.
+
+      For DPAA FMan,
+      <0> - external high precision timer reference clock (TMR_1588_CLK)
+      <1> - MAC system clock (1/2 FMan clock)
+      <2> - reserved
+      <3> - RTC clock oscillator
+
+  fsl,tclk-period:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Timer reference clock period in nanoseconds.
+
+  fsl,tmr-prsc:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Prescaler, divides the output clock.
+
+  fsl,tmr-add:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Frequency compensation value.
+
+  fsl,tmr-fiper1:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Fixed interval period pulse generator.
+
+  fsl,tmr-fiper2:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Fixed interval period pulse generator.
+
+  fsl,tmr-fiper3:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Fixed interval period pulse generator.
+      Supported only on DPAA2 and ENETC hardware.
+
+  fsl,max-adj:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Maximum frequency adjustment in parts per billion.
+
+      These properties set the operational parameters for the PTP
+      clock. You must choose these carefully for the clock to work right.
+      Here is how to figure good values:
+
+      TimerOsc     = selected reference clock   MHz
+      tclk_period  = desired clock period       nanoseconds
+      NominalFreq  = 1000 / tclk_period         MHz
+      FreqDivRatio = TimerOsc / NominalFreq     (must be greater that 1.0)
+      tmr_add      = ceil(2^32 / FreqDivRatio)
+      OutputClock  = NominalFreq / tmr_prsc     MHz
+      PulseWidth   = 1 / OutputClock            microseconds
+      FiperFreq1   = desired frequency in Hz
+      FiperDiv1    = 1000000 * OutputClock / FiperFreq1
+      tmr_fiper1   = tmr_prsc * tclk_period * FiperDiv1 - tclk_period
+      max_adj      = 1000000000 * (FreqDivRatio - 1.0) - 1
+
+      The calculation for tmr_fiper2 is the same as for tmr_fiper1. The
+      driver expects that tmr_fiper1 will be correctly set to produce a 1
+      Pulse Per Second (PPS) signal, since this will be offered to the PPS
+      subsystem to synchronize the Linux clock.
+
+      When this attribute is not used, the IEEE 1588 timer reference clock
+      will use the eTSEC system clock (for Gianfar) or the MAC system
+      clock (for DPAA).
+
+  fsl,extts-fifo:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      The presence of this property indicates hardware
+      support for the external trigger stamp FIFO
+
+  little-endian:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      The presence of this property indicates the 1588 timer
+      support for the external trigger stamp FIFO.
+      IP block is little-endian mode. The default endian mode
+      is big-endian.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    phc@24e00 {
+        compatible = "fsl,etsec-ptp";
+        reg = <0x24e00 0xb0>;
+        interrupts = <12 IRQ_TYPE_LEVEL_LOW>;
+        interrupt-parent = <&ipic>;
+        fsl,cksel       = <1>;
+        fsl,tclk-period = <10>;
+        fsl,tmr-prsc    = <100>;
+        fsl,tmr-add     = <0x999999a4>;
+        fsl,tmr-fiper1  = <0x3b9ac9f6>;
+        fsl,tmr-fiper2  = <0x00018696>;
+        fsl,max-adj     = <659999998>;
+    };

Documentation/devicetree/bindings/ptp/ptp-qoriq.txt

@@ -8816,7 +8816,7 @@ FREESCALE QORIQ PTP CLOCK DRIVER
 M:	Yangbo Lu <[email protected]>
 L:	[email protected]
 S:	Maintained
-F:	Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
+F:	Documentation/devicetree/bindings/ptp/fsl,ptp.yaml
 F:	drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp*
 F:	drivers/net/ethernet/freescale/dpaa2/dprtc*
 F:	drivers/net/ethernet/freescale/enetc/enetc_ptp.c