[v3,00/13] Add Support for RZ/G3E ICU

Message

Biju Das Jan. 28, 2025, 10:46 a.m. UTC

The ICU block on the RZ/G3E SoC is almost identical to the one found on
the RZ/V2H SoC, with the following differences:
 - The TINT register offset is 0x830 compared to 0x30 on RZ/V2H.
 - The number of supported GPIO interrupts for TINT selection is 141
   instead of 86.
 - The pin index and TINT selection index are not in the 1:1 map
 - The number of TSSR registers is 15 instead of 8
 - Each TSSR register can program 2 TINTs instead of 4 TINTs

Add support for the RZ/G3E ICU driver.

v2->v3:
 * Added a new patch for cleanup using devm_add_action_or_reset() for
   calling put_device() in error path of rzv2h_icu_init() to simplify
   the code by using recently added devm_*helpers.
 * Replaced 'goto put_dev' by 'return xxx' as put_dev() called by
   devm_add_action_or_reset()
v1->v2:
 * Collected tags
 * Split the simplification patch into two.
 * Updated commit header and description for patch#4.
 * Replaced devm_reset_control_get_optional_exclusive_deasserted()->
   devm_reset_control_get_exclusive_deasserted().
 * Moved simplification using devm_pm_runtime_enable() to patch#5.
 * Aligned kernel doc, struct members and struct initializers in
   a tabular fashion.
 * Renamed the macro ICU_PB5_TINT->ICU_RZV2H_TSSEL_MAX_VAL.
 * Replaced hexa decimal constant with ICU_RZV2H_TSSEL_MAX_VAL in struct
   rzv2h_hw_params.
 * Introduced ICU_RZG3E_{TSSEL_MAX_VAL,TINT_OFFSET} macros and used these
   macros in struct rzv2h_hw_params rather than using the hex constants.

Biju Das (13):
  dt-bindings: interrupt-controller: renesas,rzv2h-icu: Document RZ/G3E
    SoC
  clk: renesas: r9a09g047: Add ICU clock/reset
  irqchip/renesas-rzv2h: Drop irqchip from struct rzv2h_icu_priv
  irqchip/renesas-rzv2h: Simplify rzv2h_icu_init()
  irqchip/renesas-rzv2h: Use
    devm_reset_control_get_exclusive_deasserted()
  irqchip/renesas-rzv2h: Use devm_pm_runtime_enable()
  irqchip/renesas-rzv2h: Add struct rzv2h_hw_info with t_offs variable
  irqchip/renesas-rzv2h: Add max_tssel variable to struct rzv2h_hw_info
  irqchip/renesas-rzv2h: Add tssr_k variable to struct rzv2h_hw_info
  irqchip/renesas-rzv2h: Add tssel_mask and tssel_shift variables to
    struct rzv2h_hw_info
  irqchip/renesas-rzv2h: Add tien variable to struct rzv2h_hw_info
  irqchip/renesas-rzv2h: Add RZ/G3E support
  arm64: dts: renesas: r9a09g047: Add icu node

 .../renesas,rzv2h-icu.yaml                    |   6 +-
 arch/arm64/boot/dts/renesas/r9a09g047.dtsi    | 108 ++++++++++
 drivers/clk/renesas/r9a09g047-cpg.c           |   3 +
 drivers/irqchip/irq-renesas-rzv2h.c           | 195 ++++++++++++------
 4 files changed, 250 insertions(+), 62 deletions(-)