[PATCH 0/2] reset: introduce TC9564 reset support
From: Alex Elder
Date: Mon Oct 12 2026 - 14:31:57 EST
This series adds support for the reset controller present within
the Toshiba TC9564 SoC. It is being considered the first version
of the series despite being previously posted as part of a combined
clock/reset driver:
https://lore.kernel.org/lkml/20260918165234.687224-1-elder@xxxxxxxxxxxx/
This SoC attaches to a host system via PCIe. It includes a PCIe
switch with three downstream ports. To one of these ports an
embedded PCIe endpoint is attached, and it implements two PCI
functions. BAR 4 for both PCI functions provides access to the
registers that enable or disable a set of resets.
Both TC9564 PCI functions can provide PCI endpoint buses via
devicetree. Each PCI endpoint bus provides access to one of the
function's BARs. Subordinate devices (like the reset controller)
can then be defined as nodes accessible on the endpoint bus.
Only one of the two PCI functions is permitted to define the reset
device node.
Note:
Other TC9564 drivers have been posted together with DTS file
updates for the Qualcomm RB3gen2. To allow this (and a few
other) drivers to be considered in isolation, I'm omiting
that here. (I can add it to future versions if requested.)
-Alex
Alex Elder (2):
dt-bindings: reset: introduce toshiba,tc9564-reset.yaml
reset: toshiba: introduce a TC9564 SoC reset driver
.../bindings/reset/toshiba,tc9564-reset.yaml | 56 +++++
MAINTAINERS | 8 +
drivers/reset/Kconfig | 12 ++
drivers/reset/Makefile | 1 +
drivers/reset/reset-tc9564.c | 192 ++++++++++++++++++
include/dt-bindings/reset/toshiba,tc9564.h | 26 +++
6 files changed, 295 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reset/toshiba,tc9564-reset.yaml
create mode 100644 drivers/reset/reset-tc9564.c
create mode 100644 include/dt-bindings/reset/toshiba,tc9564.h
base-commit: becb95e45ef0dda9ffb35156d909d3da7a2789c3
--
2.53.0