linux-kernel - [PATCH v7 0/6] thermal: renesas: Add support for RZ/G3E

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Message-ID: <20250818162859.9661-1-john.madieu.xa@bp.renesas.com>
Date: Mon, 18 Aug 2025 18:28:46 +0200
From: John Madieu <john.madieu.xa@...renesas.com>
To: geert+renesas@...der.be,
	magnus.damm@...il.com,
	mturquette@...libre.com,
	sboyd@...nel.org,
	rafael@...nel.org,
	daniel.lezcano@...aro.org,
	rui.zhang@...el.com,
	lukasz.luba@....com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	p.zabel@...gutronix.de,
	catalin.marinas@....com,
	will@...nel.org
Cc: john.madieu@...il.com,
	linux-renesas-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org,
	devicetree@...r.kernel.org,
	biju.das.jz@...renesas.com,
	linux-arm-kernel@...ts.infradead.org,
	John Madieu <john.madieu.xa@...renesas.com>
Subject: [PATCH v7 0/6] thermal: renesas: Add support for RZ/G3E

This series adds support for the temperature sensor unit (TSU) found on the
Renesas RZ/G3E SoC.

The series consists of 5 patches (one of which is not related to the thermal
framework) that progressively add TSU support as follows:
- patch 1/6:    adds syscon/regmap support for accessing system controller
                registers, enabling access to TSU calibration values

- patch 2-6/6:  adds dt-bindings, actual driver, DT node, and config symbol.

Patch 1/6 has been duplicated at [1] in USB series. This series addresses comments
got from there.

Changes:

v1 -> v2
 * Fix yaml warnings from dt-binding
 * Update IRQ names to reflect TSU expectations

v2 -> v3
 * Remove useless 'renesas,tsu-operating-mode' property

v3 -> v4
 * Improve commit messages

v4 -> v5
 * Remove useless curly braces on single line-protected scoped guards

v5 -> v6
 * Minor typo fix
 * Constify regmap config in patch 1/5

v6 -> v7
 * Update DTS trim priperty name and specifier, updading the documentation
 accordingly
 * Refactor main driver: remove spinlock usage, using polling timeout as computed
 from datasheet. Also use polling for get_temp() while using IRQ for trip-point
 cross detection, and finally add both runtime and sleep PM support.
 * Add new patch to update sys #address-cells as trim specifier now requires an
 offet from sys base

Regards,

[1] https://lore.kernel.org/all/20250808061806.2729274-2-claudiu.beznea.uj@bp.renesas.com/


John Madieu (6):
  soc: renesas: rz-sysc: Add syscon/regmap support
  dt-bindings: thermal: r9a09g047-tsu: Document the TSU unit
  thermal: renesas: rzg3e: Add thermal driver for the Renesas RZ/G3E SoC
  arm64: dts: renesas: r9a09g047: Add #address-cells property in sys
    node
  arm64: dts: renesas: r9a09g047: Add TSU node
  arm64: defconfig: Enable the Renesas RZ/G3E thermal driver

 .../thermal/renesas,r9a09g047-tsu.yaml        |  87 +++
 MAINTAINERS                                   |   7 +
 arch/arm64/boot/dts/renesas/r9a09g047.dtsi    |  49 ++
 arch/arm64/configs/defconfig                  |   1 +
 drivers/soc/renesas/Kconfig                   |   1 +
 drivers/soc/renesas/r9a08g045-sysc.c          |   1 +
 drivers/soc/renesas/r9a09g047-sys.c           |   1 +
 drivers/soc/renesas/r9a09g057-sys.c           |   1 +
 drivers/soc/renesas/rz-sysc.c                 |  28 +-
 drivers/soc/renesas/rz-sysc.h                 |   2 +
 drivers/thermal/renesas/Kconfig               |   7 +
 drivers/thermal/renesas/Makefile              |   1 +
 drivers/thermal/renesas/rzg3e_thermal.c       | 575 ++++++++++++++++++
 13 files changed, 760 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml
 create mode 100644 drivers/thermal/renesas/rzg3e_thermal.c

-- 
2.25.1