| Message ID | 20250205160119.136639-1-c-vankar@ti.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add support for Timesync Interrupt Router | expand |
On 05/02/25 21:31, Chintan Vankar wrote: > Chintan Vankar (2): > irqchip: ti-tsir: Add support for Timesync Interrupt Router > net: ethernet: ti: am65-cpts: Add support to configure GenF signal for > CPTS > > drivers/irqchip/Kconfig | 9 +++ > drivers/irqchip/Makefile | 1 + > drivers/irqchip/ti-timesync-intr.c | 109 ++++++++++++++++++++++++++++ > drivers/net/ethernet/ti/am65-cpts.c | 21 ++++++ > 4 files changed, 140 insertions(+) > create mode 100644 drivers/irqchip/ti-timesync-intr.c Where are the device-tree binding updates that need to go with individual driver changes?
On 06/02/25 10:43, Vignesh Raghavendra wrote: > > > On 05/02/25 21:31, Chintan Vankar wrote: >> Chintan Vankar (2): >> irqchip: ti-tsir: Add support for Timesync Interrupt Router >> net: ethernet: ti: am65-cpts: Add support to configure GenF signal for >> CPTS >> >> drivers/irqchip/Kconfig | 9 +++ >> drivers/irqchip/Makefile | 1 + >> drivers/irqchip/ti-timesync-intr.c | 109 ++++++++++++++++++++++++++++ >> drivers/net/ethernet/ti/am65-cpts.c | 21 ++++++ >> 4 files changed, 140 insertions(+) >> create mode 100644 drivers/irqchip/ti-timesync-intr.c > > Where are the device-tree binding updates that need to go with > individual driver changes? > Hello Vignesh, This series is not specific to any use-case that Timesync Interrupt Router is implementing. Through this RFC series I am expecting a feedback on driver implementation so that later on we can make use of this driver to implement certain functionality. Regards, Chintan.
This series introduces the driver support for Timesync Interrupt Router, I will appreciate feedback on the driver implementation. Timesync Interrupt Router is an instantiation of the generic interrupt router module. It provides a mechanism to mux M interrupt inputs to N interrupt outputs, where all M inputs are selectable to be driven as per N output. More details about interrupt router and timesync interrupt router can be found in sections 9.3 and 11.3.2 of TRM: https://www.ti.com/lit/ug/spruiu1d/spruiu1d.pdf Timesync Interrupt Router's inputs are either from peripherals or from Device sync events. This series adds support on how we can map output of the Timesync Interrupt Router corresponding to the input received from peripherals. As an instance, one of the input for Timesync Interrupt Router is, Generator function, which is an output from CPTS module. The CPTS hardware doesn't support PPS signal generation. Using the GenFx (periodic signal generator) function, it is possible to model a PPS signal followed by routing it via the Timesync Interrupt router to the CPTS_HWy_TS_PUSH (hardware time stamp) input, in order to generate timestamps at 1 second intervals. To provide PPS support to am65-cpts driver we need to configure timesync interrupt router to route input received as GenFx output from CPTS module back to HWy_TS_PUSH input of CPTS module. AM62x is one of the SoCs which has Timesync Router and mapping for all its output corresponding to its input can be found on SDK documentation of TISCI at: https://software-dl.ti.com/tisci/esd/latest/5_soc_doc/am62x/interrupt_cfg.html#timesync-event-router0-interrupt-router-output-destinations This series is based on linux-next tagged next-20250205. Chintan Vankar (2): irqchip: ti-tsir: Add support for Timesync Interrupt Router net: ethernet: ti: am65-cpts: Add support to configure GenF signal for CPTS drivers/irqchip/Kconfig | 9 +++ drivers/irqchip/Makefile | 1 + drivers/irqchip/ti-timesync-intr.c | 109 ++++++++++++++++++++++++++++ drivers/net/ethernet/ti/am65-cpts.c | 21 ++++++ 4 files changed, 140 insertions(+) create mode 100644 drivers/irqchip/ti-timesync-intr.c