[v3,0/4] clk: ralink: make system controller a reset provider

Message

Sergio Paracuellos Oct. 30, 2021, 2:20 p.m. UTC

Hi all,

This patch series add minimal change to provide mt7621 resets properly
defining them in the 'mediatek,mt7621-sysc' node which is the system
controller of the SoC and is already providing clocks to the rest of
the world.

There is shared architecture code for all ralink platforms in 'reset.c'
file located in 'arch/mips/ralink' but the correct thing to do to align
hardware with software seems to define and add related reset code to the
already mainlined clock driver.

After this changes, we can get rid of the useless reset controller node
in the device tree and use system controller node instead where the property
'#reset-cells' has been added. Binding documentation for this nodeq has
been updated with the new property accordly.

This series also provide a bindings include header where all related
reset bits for the MT7621 SoC are defined.

Also, please take a look to this review [0] to understand better motivation
for this series.

Regarding the way of merging this:
 - I'd like patches 1 and 4 which are related going through staging tree.
 - The other two (patches 2 and 3) can perfectly go through the clock tree.

Thanks in advance for your feedback.

Changes in v3:
  - Collect Rob's Acked-by for patches 1 and 2. 
  - Rebase on the top of staging-next since there were already many
    changes there and PATCH 4 of the series didn't apply cleanly.

Changes in v2:
  - Address review comments of Dan Carpenter [1]:
     + Avoid 'inline' in function definition.
     + Return proper error codes (-EINVAL) instead of '-1'.
     + Make use of 'devm_kzalloc' instead of 'kzalloc'.

Best regards,
   Sergio Paracuellos

Sergio Paracuellos (4):
  dt-bindings: reset: add dt binding header for Mediatek MT7621 resets
  dt-bindings: clock: mediatek,mt7621-sysc: add '#reset-cells' property
  clk: ralink: make system controller node a reset provider
  staging: mt7621-dts: align resets with binding documentation

 .../bindings/clock/mediatek,mt7621-sysc.yaml  | 12 +++
 drivers/clk/ralink/clk-mt7621.c               | 79 +++++++++++++++++++
 drivers/staging/mt7621-dts/mt7621.dtsi        | 25 +++---
 include/dt-bindings/reset/mt7621-reset.h      | 37 +++++++++
 4 files changed, 139 insertions(+), 14 deletions(-)
 create mode 100644 include/dt-bindings/reset/mt7621-reset.h