[PATCH 0/3] Add driver support for ESWIN EIC7700 HSP clock and reset generator

[dongxuyang]

From: Xuyang Dong <dongxuyang@xxxxxxxxxxxxxxxxxx>

Add support for the ESWIN EIC7700 HSP (high-speed peripherals). The drivers
provide basic functionality to manage and control the clock and reset
signals for EIC7700 HSP, including mmc, USB, ethernet, SATA and DMAC.

The clock and reset registers are mapped to overlapping I/O address ranges.
This causes a resource conflict when two drivers attempt to request the
same region. Use the auxiliary device framework: the main driver
allocates the shared register region and passes it to auxiliary
devices, avoiding resource contention and duplicate remapping.

Features:
Implements support for the ESWIN EIC7700 HSP clock and reset controller.
Provide API to manage clock and reset signals for the EIC7700 HSP.

Supported chips:
ESWIN EIC7700 series SoC.

Test:
Test this patch on the Sifive HiFive Premier P550 (which used the EIC7700
SoC), include USB and other peripherals. All the drivers of these modules
use the clock module and reset module.

This patch depends on ESWIN EIC7700 clock controller patch [1], [2] and [3].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20260331&id=8add6d87dc69c0620c7e60bdc6be6b3b0092d9fa
[2] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20260331&id=cd44f127c1d42833a32ba0a0965255ee6184f8c1
[3] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20260331&id=858f6273cf003e97c817903a07d8001b483fe40b

Xuyang Dong (3):
  dt-bindings: clock: Add ESWIN eic7700 HSP clock and reset generator
  clk: eswin: Add eic7700 HSP clock driver
  reset: eswin: Add eic7700 HSP reset driver

 .../bindings/clock/eswin,eic7700-hspcrg.yaml  |  63 ++++
 MAINTAINERS                                   |   3 +
 drivers/clk/eswin/Kconfig                     |  12 +
 drivers/clk/eswin/Makefile                    |   1 +
 drivers/clk/eswin/clk-eic7700-hsp.c           | 339 ++++++++++++++++++
 drivers/reset/Kconfig                         |  13 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-eic7700-hsp.c             | 151 ++++++++
 .../dt-bindings/clock/eswin,eic7700-hspcrg.h  |  33 ++
 .../dt-bindings/reset/eswin,eic7700-hspcrg.h  |  21 ++
 10 files changed, 637 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/eswin,eic7700-hspcrg.yaml
 create mode 100644 drivers/clk/eswin/clk-eic7700-hsp.c
 create mode 100644 drivers/reset/reset-eic7700-hsp.c
 create mode 100644 include/dt-bindings/clock/eswin,eic7700-hspcrg.h
 create mode 100644 include/dt-bindings/reset/eswin,eic7700-hspcrg.h

--
2.34.1