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[0/6] Add support to retrieve the bootstatus from watchdog for RZ/V2H(P) SoC

Message ID 20241218003414.490498-1-prabhakar.mahadev-lad.rj@bp.renesas.com
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Series Add support to retrieve the bootstatus from watchdog for RZ/V2H(P) SoC | expand

Message

Lad, Prabhakar Dec. 18, 2024, 12:34 a.m. UTC 
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Hi All,

This patch series adds SYSCON support to retrieve boot status information
for RZ/V2H(P) SoC.
Summary of Changes,

    Clock:
        Add syscon compatible support to the CPG block in bindings and
        device trees.

    Watchdog:
        Document the renesas,r9a09g057-syscon-wdt-errorrst property.
        Update the watchdog driver to fetch and report boot status via
        Error Reset Registers (CPG_ERROR_RSTm).

    Device Tree:
        Add the syscon property to CPG and WDT nodes in R9A09G057 and
        R9A09G047 SoC DTSI.

These changes enable the watchdog driver to identify boot sources like
Power-on Reset and Watchdog Reset, improving system diagnostics.

Cheers,
Prabhakar

Lad Prabhakar (6):
  dt-bindings: clock: rzv2h-cpg: Add syscon compatible for CPG block
  arm64: dts: renesas: r9a09g047: Add `syscon` compatible for CPG node
  arm64: dts: renesas: r9a09g057: Add `syscon` compatible for CPG node
  dt-bindings: watchdog: renesas: Document
    `renesas,r9a09g057-syscon-wdt-errorrst` property
  watchdog: rzv2h_wdt: Add support to retrieve the bootstatus
    information
  arm64: dts: renesas: r9a09g057: Add
    `renesas,r9a09g057-syscon-wdt-errorrst` property to WDT node

 .../bindings/clock/renesas,rzv2h-cpg.yaml     | 10 ++--
 .../bindings/watchdog/renesas,wdt.yaml        | 17 +++++++
 arch/arm64/boot/dts/renesas/r9a09g047.dtsi    |  2 +-
 arch/arm64/boot/dts/renesas/r9a09g057.dtsi    |  6 ++-
 drivers/watchdog/rzv2h_wdt.c                  | 48 ++++++++++++++++++-
 5 files changed, 76 insertions(+), 7 deletions(-)