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Thu, 16 Jul 2026 04:25:52 -0400 From: Alexis Czezar Torreno Date: Thu, 16 Jul 2026 16:25:12 +0800 Subject: [PATCH 2/3] hwmon: (pmbus/max34440): add support for newer version of max34451 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <20260716-max34451_fixes-v1-2-a941b27eaecb@analog.com> References: <20260716-max34451_fixes-v1-0-a941b27eaecb@analog.com> In-Reply-To: <20260716-max34451_fixes-v1-0-a941b27eaecb@analog.com> To: Guenter Roeck , Kun Yi , =?utf-8?q?Nuno_S=C3=A1?= , Jonathan Corbet , Shuah Khan CC: , , , Alexis Czezar Torreno X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1784190339; l=1932; i=alexisczezar.torreno@analog.com; s=20250213; h=from:subject:message-id; bh=4nruIZwYh4bpN/rStgkU3qsHtFyA0JjRVR4WY9FJHQk=; b=8Zz5FVRIheJBQezzmTAh7EXYO6HDdGvZICTYo3im3emCZpYpW3toEQj9rb5djtikgjfjTDs6y aYTIO9IZ6mcB4Dj8xQXifYCdc9YWmMlxfKox+BstXPQhcYQSkkno+Nf X-Developer-Key: i=alexisczezar.torreno@analog.com; 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This simply changes the direct format coefficients Signed-off-by: Alexis Czezar Torreno --- drivers/hwmon/pmbus/max34440.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) diff --git a/drivers/hwmon/pmbus/max34440.c b/drivers/hwmon/pmbus/max34440.c index e56057e9273c1639bddbaf4e665ea159f1d7c3ed..024109df26db568a4c230c9dbc45d69ba531dd8d 100644 --- a/drivers/hwmon/pmbus/max34440.c +++ b/drivers/hwmon/pmbus/max34440.c @@ -59,6 +59,7 @@ enum chips { #define MAX34440_IOUT_OC_FAULT_LIMIT 0x4A #define MAX34451ETNA6_MFR_REV 0x0012 +#define MAX34451ETNA8_MFR_REV 0x0014 #define MAX34451_MFR_CHANNEL_CONFIG 0xe4 #define MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK 0x3f @@ -343,12 +344,24 @@ static int max34451_set_supported_funcs(struct i2c_client *client, max34451_na6 = true; data->info.format[PSC_VOLTAGE_IN] = direct; data->info.format[PSC_CURRENT_IN] = direct; - data->info.m[PSC_VOLTAGE_IN] = 1; + data->info.b[PSC_VOLTAGE_IN] = 0; - data->info.R[PSC_VOLTAGE_IN] = 3; - data->info.m[PSC_CURRENT_IN] = 1; data->info.b[PSC_CURRENT_IN] = 0; - data->info.R[PSC_CURRENT_IN] = 2; + if (rv == MAX34451ETNA8_MFR_REV) { + data->info.m[PSC_VOLTAGE_IN] = 125; + data->info.R[PSC_VOLTAGE_IN] = 0; + data->info.m[PSC_VOLTAGE_OUT] = 125; + data->info.R[PSC_VOLTAGE_OUT] = 0; + data->info.m[PSC_CURRENT_IN] = 250; + data->info.R[PSC_CURRENT_IN] = -1; + data->info.m[PSC_CURRENT_OUT] = 250; + data->info.R[PSC_CURRENT_OUT] = -1; + } else { + data->info.m[PSC_VOLTAGE_IN] = 1; + data->info.R[PSC_VOLTAGE_IN] = 3; + data->info.m[PSC_CURRENT_IN] = 1; + data->info.R[PSC_CURRENT_IN] = 2; + } data->iout_oc_fault_limit = PMBUS_IOUT_OC_FAULT_LIMIT; data->iout_oc_warn_limit = PMBUS_IOUT_OC_WARN_LIMIT; } -- 2.34.1