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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/devicetree/bindings/ptp
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/ptp')
-rw-r--r--Documentation/devicetree/bindings/ptp/brcm,ptp-dte.txt19
-rw-r--r--Documentation/devicetree/bindings/ptp/ptp-idt82p33.yaml45
-rw-r--r--Documentation/devicetree/bindings/ptp/ptp-idtcm.yaml69
-rw-r--r--Documentation/devicetree/bindings/ptp/ptp-ines.txt35
-rw-r--r--Documentation/devicetree/bindings/ptp/ptp-qoriq.txt87
-rw-r--r--Documentation/devicetree/bindings/ptp/timestamper.txt42
6 files changed, 297 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ptp/brcm,ptp-dte.txt b/Documentation/devicetree/bindings/ptp/brcm,ptp-dte.txt
new file mode 100644
index 000000000..6b1075ee8
--- /dev/null
+++ b/Documentation/devicetree/bindings/ptp/brcm,ptp-dte.txt
@@ -0,0 +1,19 @@
+* Broadcom Digital Timing Engine(DTE) based PTP clock
+
+Required properties:
+- compatible: should contain the core compatibility string
+ and the SoC compatibility string. The SoC
+ compatibility string is to handle SoC specific
+ hardware differences.
+ Core compatibility string:
+ "brcm,ptp-dte"
+ SoC compatibility strings:
+ "brcm,iproc-ptp-dte" - for iproc based SoC's
+- reg: address and length of the DTE block's NCO registers
+
+Example:
+
+ptp: ptp-dte@180af650 {
+ compatible = "brcm,iproc-ptp-dte", "brcm,ptp-dte";
+ reg = <0x180af650 0x10>;
+};
diff --git a/Documentation/devicetree/bindings/ptp/ptp-idt82p33.yaml b/Documentation/devicetree/bindings/ptp/ptp-idt82p33.yaml
new file mode 100644
index 000000000..51381e4cb
--- /dev/null
+++ b/Documentation/devicetree/bindings/ptp/ptp-idt82p33.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ptp/ptp-idt82p33.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: IDT 82P33 PTP Clock
+
+description: |
+ IDT 82P33XXX Synchronization Management Unit (SMU) based PTP clock
+
+maintainers:
+ - Min Li <min.li.xe@renesas.com>
+
+properties:
+ compatible:
+ enum:
+ - idt,82p33810
+ - idt,82p33813
+ - idt,82p33814
+ - idt,82p33831
+ - idt,82p33910
+ - idt,82p33913
+ - idt,82p33914
+ - idt,82p33931
+
+ reg:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ phc@51 {
+ compatible = "idt,82p33810";
+ reg = <0x51>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/ptp/ptp-idtcm.yaml b/Documentation/devicetree/bindings/ptp/ptp-idtcm.yaml
new file mode 100644
index 000000000..7cf32663c
--- /dev/null
+++ b/Documentation/devicetree/bindings/ptp/ptp-idtcm.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ptp/ptp-idtcm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: IDT ClockMatrix (TM) PTP Clock
+
+maintainers:
+ - Vincent Cheng <vincent.cheng.xh@renesas.com>
+
+properties:
+ compatible:
+ enum:
+ # For System Synchronizer
+ - idt,8a34000
+ - idt,8a34001
+ - idt,8a34002
+ - idt,8a34003
+ - idt,8a34004
+ - idt,8a34005
+ - idt,8a34006
+ - idt,8a34007
+ - idt,8a34008
+ - idt,8a34009
+ # For Port Synchronizer
+ - idt,8a34010
+ - idt,8a34011
+ - idt,8a34012
+ - idt,8a34013
+ - idt,8a34014
+ - idt,8a34015
+ - idt,8a34016
+ - idt,8a34017
+ - idt,8a34018
+ - idt,8a34019
+ # For Universal Frequency Translator (UFT)
+ - idt,8a34040
+ - idt,8a34041
+ - idt,8a34042
+ - idt,8a34043
+ - idt,8a34044
+ - idt,8a34045
+ - idt,8a34046
+ - idt,8a34047
+ - idt,8a34048
+ - idt,8a34049
+
+ reg:
+ maxItems: 1
+ description:
+ I2C slave address of the device.
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ phc@5b {
+ compatible = "idt,8a34000";
+ reg = <0x5b>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/ptp/ptp-ines.txt b/Documentation/devicetree/bindings/ptp/ptp-ines.txt
new file mode 100644
index 000000000..4c242bd1c
--- /dev/null
+++ b/Documentation/devicetree/bindings/ptp/ptp-ines.txt
@@ -0,0 +1,35 @@
+ZHAW InES PTP time stamping IP core
+
+The IP core needs two different kinds of nodes. The control node
+lives somewhere in the memory map and specifies the address of the
+control registers. There can be up to three port handles placed as
+attributes of PHY nodes. These associate a particular MII bus with a
+port index within the IP core.
+
+Required properties of the control node:
+
+- compatible: "ines,ptp-ctrl"
+- reg: physical address and size of the register bank
+
+Required format of the port handle within the PHY node:
+
+- timestamper: provides control node reference and
+ the port channel within the IP core
+
+Example:
+
+ tstamper: timestamper@60000000 {
+ compatible = "ines,ptp-ctrl";
+ reg = <0x60000000 0x80>;
+ };
+
+ ethernet@80000000 {
+ ...
+ mdio {
+ ...
+ ethernet-phy@3 {
+ ...
+ timestamper = <&tstamper 0>;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/ptp/ptp-qoriq.txt b/Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
new file mode 100644
index 000000000..743eda754
--- /dev/null
+++ b/Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
@@ -0,0 +1,87 @@
+* Freescale QorIQ 1588 timer based PTP clock
+
+General Properties:
+
+ - compatible Should be "fsl,etsec-ptp" for eTSEC
+ Should be "fsl,fman-ptp-timer" for DPAA FMan
+ Should be "fsl,dpaa2-ptp" for DPAA2
+ Should be "fsl,enetc-ptp" for ENETC
+ - reg Offset and length of the register set for the device
+ - interrupts There should be at least two interrupts. Some devices
+ have as many as four PTP related interrupts.
+
+Clock Properties:
+
+ - fsl,cksel Timer reference clock source.
+ - fsl,tclk-period Timer reference clock period in nanoseconds.
+ - fsl,tmr-prsc Prescaler, divides the output clock.
+ - fsl,tmr-add Frequency compensation value.
+ - fsl,tmr-fiper1 Fixed interval period pulse generator.
+ - fsl,tmr-fiper2 Fixed interval period pulse generator.
+ - fsl,tmr-fiper3 Fixed interval period pulse generator.
+ Supported only on DPAA2 and ENETC hardware.
+ - fsl,max-adj Maximum frequency adjustment in parts per billion.
+ - fsl,extts-fifo The presence of this property indicates hardware
+ support for the external trigger stamp FIFO.
+ - little-endian The presence of this property indicates the 1588 timer
+ IP block is little-endian mode. The default endian mode
+ is big-endian.
+
+ 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.
+
+ 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
+
+ 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).
+
+Example:
+
+ ptp_clock@24e00 {
+ compatible = "fsl,etsec-ptp";
+ reg = <0x24E00 0xB0>;
+ interrupts = <12 0x8 13 0x8>;
+ 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>;
+ };
diff --git a/Documentation/devicetree/bindings/ptp/timestamper.txt b/Documentation/devicetree/bindings/ptp/timestamper.txt
new file mode 100644
index 000000000..fc550ce4d
--- /dev/null
+++ b/Documentation/devicetree/bindings/ptp/timestamper.txt
@@ -0,0 +1,42 @@
+Time stamps from MII bus snooping devices
+
+This binding supports non-PHY devices that snoop the MII bus and
+provide time stamps. In contrast to PHY time stamping drivers (which
+can simply attach their interface directly to the PHY instance), stand
+alone MII time stamping drivers use this binding to specify the
+connection between the snooping device and a given network interface.
+
+Non-PHY MII time stamping drivers typically talk to the control
+interface over another bus like I2C, SPI, UART, or via a memory mapped
+peripheral. This controller device is associated with one or more
+time stamping channels, each of which snoops on a MII bus.
+
+The "timestamper" property lives in a phy node and links a time
+stamping channel from the controller device to that phy's MII bus.
+
+Example:
+
+ tstamper: timestamper@10000000 {
+ compatible = "ines,ptp-ctrl";
+ reg = <0x10000000 0x80>;
+ };
+
+ ethernet@20000000 {
+ mdio {
+ ethernet-phy@1 {
+ timestamper = <&tstamper 0>;
+ };
+ };
+ };
+
+ ethernet@30000000 {
+ mdio {
+ ethernet-phy@2 {
+ timestamper = <&tstamper 1>;
+ };
+ };
+ };
+
+In this example, time stamps from the MII bus attached to phy@1 will
+appear on time stamp channel 0 (zero), and those from phy@2 appear on
+channel 1.