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PRU-ICSS: Linux_Drivers: PRU-ICSS_Ethernet.rst: Fix PPS documentation #80

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PRU-ICSS: Linux_Drivers: PRU-ICSS_Ethernet.rst: Fix PPS documentation #80

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fix(PRU-ICSS): Fix PPS documentation for AM64X
MeghanaMalladiTI Dec 9, 2024
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Merge branch 'TexasInstruments:master' into master
MeghanaMalladiTI Dec 9, 2024
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11 changes: 2 additions & 9 deletions source/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/PRU_ICSSG_Ethernet.rst
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Expand Up @@ -662,14 +662,7 @@ PPS Pulse Per Second support

.. ifconfig:: CONFIG_part_variant in ('AM64X')

To enable PPS on AM64x, the hardware pin PRG0_IEP0EDC_SYNC_OUT0 needs to be enabled.

::

icssg0_iep0_pins_default: icssg0-iep0-pins-default {
pinctrl-single,pins = <
AM64X_IOPAD(0x01AC, PIN_OUTPUT, 2) /* (W1) PRG0_PRU0_GPO19.PRG0_IEP0_EDC_SYNC_OUT0 */
>;
To enable PPS on AM64x, the hardware pin PRG0_IEP0_EDC_SYNC_OUT0 needs to be enabled.

PPS can be tested using `testptp.c <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/plain/tools/testing/selftests/ptp/testptp.c>`__ tool.

Expand All @@ -691,7 +684,7 @@ To turn on PPS,

.. ifconfig:: CONFIG_part_variant in ('AM64X')

This will generate PPS signal with 1 pulse per second which can be captured by oscilloscope.
This will generate PPS signal with 1 pulse per second which can be probed at J18 SYNC_OUT0 header on the EVM and capture using oscilloscope.

To turn off PPS,

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