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Sun, 19 Jul 2026 23:14:53 -0400 From: Alexis Czezar Torreno Subject: [PATCH v3 0/4] Add support for MAX20830C and MAX20840C step-down DC-DC switching regulator Date: Mon, 20 Jul 2026 11:14:41 +0800 Message-ID: <20260720-dev-max20830c-v3-0-9d06d27d6da3@analog.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAKGSXWoC/3XMSwrCMBSF4a2UjI3cJjZJHbkPcZDHbRuwjSQSK qV7N+1EFByeA9+/kITRYyLnaiERs08+TGXwQ0XsoKceqXdlEwZMgOBAHWY66pmB4mBp67hyyoC WoiHFPCJ2ft5711vZg0/PEF97Ptfb+6+UawpUA5NKGIcnCRc96XvojzaMZEtl9uESxC9nhXMpR Y2qNabpvvi6rm/9jtrZ6gAAAA== X-Change-ID: 20260630-dev-max20830c-9d38d8b0a765 To: Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , Shuah Khan CC: , , , , "Alexis Czezar Torreno" , Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1784517290; 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Patches 1 and 2 adds new resistor feedback properties that is needed to properly scale VOUT Patches 3 and 4 adds support for devices MAX20830C and MAX20840C. MAX20830C and MAX20840 are step-down DC-DC switching regulator with PMBus interface. MAX20830C is a different packaging for MAX20830, and MAX20840C supports 40A regulation compared to MAX20830 that is only 30A. Signed-off-by: Alexis Czezar Torreno --- Changes in v3: - Dropped patch that add EN-GPIO property in DTS - discussed to be skippable until an actual use-case arise - Patch 1/4: - Carried over the completed examples from previously dropped patch - Kept the review tag as the carried info from the dropped patched was also reviewed. - Patch 2/4: - added clamping to read_vout during scaling - improved comments regarding future regulator support - Link to v2: https://lore.kernel.org/r/20260706-dev-max20830c-v2-0-37761e89bb5f@analog.com Changes in v2: - Patch 1/5: completing example - Dropped patch adding GPIO enable in driver (no use case) - Patch 3/5: added notes on READ_VOUT and related VOUT commands - Patch 4/5: removed comment on fallback - Patch 5/5: simplified device ID check handling - Link to v1: https://lore.kernel.org/r/20260630-dev-max20830c-v1-0-a02786bde470@analog.com --- Alexis Czezar Torreno (4): dt-bindings: hwmon: (pmbus/max20830): add VOUT feedback resistor properties and complete examples hwmon: (pmbus/max20830): add VOUT feedback resistor scaling support dt-bindings: hwmon: (pmbus/max20830): add max20830c and max20840c support hwmon: (pmbus/max20830): add support for max20830c and max20840c .../bindings/hwmon/pmbus/adi,max20830.yaml | 28 ++++++- Documentation/hwmon/max20830.rst | 27 +++++-- drivers/hwmon/pmbus/max20830.c | 86 ++++++++++++++++++---- 3 files changed, 121 insertions(+), 20 deletions(-) --- base-commit: 1a42625604046790ea8ec61c2a749bbf76b28943 change-id: 20260630-dev-max20830c-9d38d8b0a765 Best regards, -- Alexis Czezar Torreno