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Sender: Guenter Roeck <groeck7@gmail.com>
Message-ID: <780fd479-a3c0-49d0-b632-4bff171fe067@roeck-us.net>
Date:   Thu, 16 Nov 2023 13:53:00 -0800
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User-Agent: Mozilla Thunderbird
Subject: Re: [PATCH v5 2/2] hwmon: pmbus: Add ltc4286 driver
Content-Language: en-US
To:     Delphine CC Chiu <Delphine_CC_Chiu@Wiwynn.com>, patrick@stwcx.xyz,
        Jean Delvare <jdelvare@suse.com>,
        Jonathan Corbet <corbet@lwn.net>
Cc:     Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>, linux-i2c@vger.kernel.org,
        linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org
References: <20231116023027.24855-1-Delphine_CC_Chiu@Wiwynn.com>
 <20231116023027.24855-3-Delphine_CC_Chiu@Wiwynn.com>
From:   Guenter Roeck <linux@roeck-us.net>
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In-Reply-To: <20231116023027.24855-3-Delphine_CC_Chiu@Wiwynn.com>
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Precedence: bulk

On 11/15/23 18:30, Delphine CC Chiu wrote:
> Add a driver to support ltc4286 chip
> 
> Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@Wiwynn.com>
> 
> -------------------------------------------------------------
[ ... ]

> +	/* Default of VRANGE_SELECT = 1, 102.4V */
> +	if (device_property_read_bool(&client->dev, "adi,vrange-low-enable")) {
> +		/* Setup MFR1 CONFIG register bit 1 VRANGE_SELECT */
> +		ret = i2c_smbus_read_word_data(client, LTC4286_MFR_CONFIG1);
> +		if (ret < 0)
> +			return dev_err_probe(
> +				&client->dev, ret,
> +				"Failed to read manufacturer configuration one\n");
> +
> +		ret &= ~VRANGE_SELECT_BIT; /* VRANGE_SELECT = 0, 25.6V */
> +		ret = i2c_smbus_write_word_data(client, LTC4286_MFR_CONFIG1,
> +						ret);
> +		if (ret < 0)
> +			return dev_err_probe(&client->dev, ret,
> +					     "Failed to set vrange\n");
> +
> +		info->m[PSC_VOLTAGE_IN] = 128;
> +		info->m[PSC_VOLTAGE_OUT] = 128;
> +		info->m[PSC_POWER] = 4 * rsense;
> +	} else {
> +		info->m[PSC_POWER] = rsense;
> +	}

My feedback has not been addressed.

Guenter