linux-kernel - [PATCH 0/9] Add Renesas RZ/G3L PINCONTROL support

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Message-ID: <20260129092127.95378-1-biju.das.jz@bp.renesas.com>
Date: Thu, 29 Jan 2026 09:21:24 +0000
From: Biju <biju.das.au@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Linus Walleij <linusw@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Magnus Damm <magnus.damm@...il.com>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	linux-renesas-soc@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Biju Das <biju.das.au@...il.com>
Subject: [PATCH 0/9] Add Renesas RZ/G3L PINCONTROL support

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

Hi All,

This patch series aims to add basic pincontrol support for RZ/G3L SoC. The
RZ/G3L pinctrl has OTHER_POC register compared to other SoCs for setting
IO domain volage for AWO, ISO and WDT.

Document the reset-names as all SOCs has multiple resets.

Document the bindings for RZ/G3L SOC and add pinctrl definitions in
driver.

Add pincontrol device node and add pincontrol support for SCIF0 and GBETH
nodes.

Note:
Some IPs needs to set the register IPCONT_SEL_CLONECH in SYSC to control
the clone channel of the IP. Plan to add clone channel control support
later. The IP's involing clone channel needs to do the setup as per the
below flow

(1) Set SYS_IPCONT_SEL_CLONECH register as necessary
(2) Set the PWPR register to allow writing to the PFC_m register.
    After setting the PWPR.B0WI bit to “0” (initial value = 1), 
    set the PWPR.PFCWE bit to “1” (initial value = 0).
    Select the required function from Functions 0-15.
    (Hereafter, Function1 setting example)
(3) Set PFC_m = 0001b and switch to Function1.
(4) Set the PMC_m register to “1” (initial value = 0).
(5) Set the PFC_m register to write-protected. After setting
    the PWPR.PFCWE bit to “0”, set the PWPR.B0WI bit to “1”.

The clock and dtsi/dts patches depend upon [1]
[1] https://lore.kernel.org/all/20260128125850.425264-1-biju.das.jz@bp.renesas.com/

Biju Das (9):
  dt-bindings: pinctrl: renesas: Document reset-names
  dt-bindings: pinctrl: renesas: Document RZ/G3L SoC
  clk: renesas: r9a08g046: Add GPIO clocks/resets
  pinctrl: renesas: rzg2l: Add support for selecting power source for
    {WDT,AWO,ISO}
  pinctrl: renesas: rzg2l: Add OEN support for RZ/G3L
  pinctrl: renesas: rzg2l: Add support for RZ/G3L SoC
  arm64: dts: renesas: r9a08g046: Add pincontrol node
  arm64: dts: renesas: r9a08g046l48-smarc: Add SCIF0 pincontrol
  arm64: dts: renesas: rzg3l-smarc-som: Enable eth1 (GBETH1) interface

 .../pinctrl/renesas,rzg2l-pinctrl.yaml        |  16 +
 arch/arm64/boot/dts/renesas/r9a07g043.dtsi    |   1 +
 arch/arm64/boot/dts/renesas/r9a07g044.dtsi    |   1 +
 arch/arm64/boot/dts/renesas/r9a07g054.dtsi    |   1 +
 arch/arm64/boot/dts/renesas/r9a08g045.dtsi    |   1 +
 arch/arm64/boot/dts/renesas/r9a08g046.dtsi    |  10 +
 .../boot/dts/renesas/r9a08g046l48-smarc.dts   |  13 +
 arch/arm64/boot/dts/renesas/r9a09g047.dtsi    |   1 +
 arch/arm64/boot/dts/renesas/r9a09g056.dtsi    |   1 +
 arch/arm64/boot/dts/renesas/r9a09g057.dtsi    |   1 +
 .../boot/dts/renesas/rzg3l-smarc-som.dtsi     |  92 ++++++
 drivers/clk/renesas/r9a08g046-cpg.c           |   6 +
 drivers/pinctrl/renesas/pinctrl-rzg2l.c       | 285 +++++++++++++++++-
 .../pinctrl/renesas,r9a08g046-pinctrl.h       |  39 +++
 14 files changed, 465 insertions(+), 3 deletions(-)
 create mode 100644 include/dt-bindings/pinctrl/renesas,r9a08g046-pinctrl.h

-- 
2.43.0