linux-kernel - [PATCH v4 0/9] Add RZ/G3E GPT support

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Message-ID: <20251208152133.269316-1-biju.das.jz@bp.renesas.com>
Date: Mon,  8 Dec 2025 15:21:17 +0000
From: Biju <biju.das.au@...il.com>
To: Uwe Kleine-König <ukleinek@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
	Biju Das <biju.das.au@...il.com>
Subject: [PATCH v4 0/9] Add RZ/G3E GPT support

From: Biju Das <biju.das.jz@...renesas.com>

Add RZ/G3E GPT support. It has multiple clocks and resets compared to
RZ/G2L. Also prescale field width and factor for calculating prescale
are different.

v3->v4:
 * Added wave form callback conversion back to this patch series.
 * Updated rzg2l_gpt_is_ch_enabled() fit into 80-character limit for
   consistency with other functions.
 * Dropped field_{get,prep} as mainline now support it.
 * Updated commit description for patch#3
 * Retained RZG2L_GTCR_TPCS bit definitons
 * Replaced gtcr_tpcs_mask->gtcr_tpcs
 * Updated commit header and description for patch#4
 * Renamed prescale_pow_of_two_mult_factor->prescale_mult
 * Added RZG3E_GTCR_TPCS bit definition for RZ/G3E and added to
   rzg3e_data.
 * Added error checks on suspend() and device set to operational state
   on failure().
 * Added Rb tag from Geert for SoC dtsi.
 * Added SW_GPIO9_CAN1_STB check to gpt0 node.
v2->v3:
 * Added Rb tag from Rob for bindings patch
 * Dropped wave form callback conversion from this patch series as
   it is covered in another series[1]
 * Added suspend/resume support.
v1->v2:
 * Created separate document for RZ/G3E GPT.
 * Updated commit header and description for binding patch.
 * Added waveform callback conversion to this series.
 * Collected tag.
 * Added link to hardware manual
 * Updated limitation section in driver patch.

Biju Das (9):
  dt-bindings: pwm: Document RZ/G3E GPT support
  pwm: rzg2l-gpt: Implementation of the waveform callbacks
  pwm: rzg2l-gpt: Add info variable to struct rzg2l_gpt_chip
  pwm: rzg2l-gpt: Add prescale_mult variable to struct rzg2l_gpt_info
  pwm: rzg2l-gpt: Add calculate_prescale() callback to struct
    rzg2l_gpt_info
  pwm: rzg2l-gpt: Add RZ/G3E support
  pwm: rzg2l-gpt: Add suspend/resume support
  arm64: dts: renesas: r9a09g047: Add GPT nodes
  arm64: dts: renesas: r9a09g047e57-smarc: Enable GPT on carrier board

 .../bindings/pwm/renesas,rzg3e-gpt.yaml       | 323 +++++++++++++++
 arch/arm64/boot/dts/renesas/r9a09g047.dtsi    | 184 ++++++++
 .../boot/dts/renesas/r9a09g047e57-smarc.dts   |  13 +
 drivers/pwm/pwm-rzg2l-gpt.c                   | 392 +++++++++++++-----
 4 files changed, 819 insertions(+), 93 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/pwm/renesas,rzg3e-gpt.yaml

base-commit: 82bcd04d124a4d84580ea4a8ba6b120db5f512e7
-- 
2.43.0