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Message-Id: <20210329015238.19474-3-quan@os.amperecomputing.com>
Date: Mon, 29 Mar 2021 08:52:36 +0700
From: Quan Nguyen <quan@...amperecomputing.com>
To: Joel Stanley <joel@....id.au>, Andrew Jeffery <andrew@...id.au>,
Jean Delvare <jdelvare@...e.com>,
Guenter Roeck <linux@...ck-us.net>,
Rob Herring <robh+dt@...nel.org>,
Lee Jones <lee.jones@...aro.org>,
Jonathan Corbet <corbet@....net>, linux-hwmon@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-doc@...r.kernel.org, linux-aspeed@...ts.ozlabs.org,
openbmc@...ts.ozlabs.org
Cc: Open Source Submission <patches@...erecomputing.com>,
Phong Vo <phong@...amperecomputing.com>,
"Thang Q . Nguyen" <thang@...amperecomputing.com>
Subject: [PATCH v2 2/4] mfd: simple-mfd-i2c: Adds Ampere's Altra SMpro support
Adds an MFD driver for SMpro found on the Mt.Jade hardware reference
platform with Ampere's Altra processor family.
Signed-off-by: Quan Nguyen <quan@...amperecomputing.com>
---
drivers/mfd/Kconfig | 10 ++++++++++
drivers/mfd/simple-mfd-i2c.c | 6 ++++++
2 files changed, 16 insertions(+)
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index d07e8cf93286..f7a6460f7aa0 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -77,6 +77,16 @@ config MFD_AS3711
help
Support for the AS3711 PMIC from AMS
+config MFD_SMPRO
+ tristate "Ampere Computing MFD SMpro core driver"
+ select MFD_SIMPLE_MFD_I2C
+ help
+ Say yes here to enable SMpro driver support for Ampere's Altra
+ processor family.
+
+ Ampere's Altra SMpro exposes an I2C regmap interface that can
+ be accessed by child devices.
+
config MFD_AS3722
tristate "ams AS3722 Power Management IC"
select MFD_CORE
diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c
index 87f684cff9a1..9a44655f5592 100644
--- a/drivers/mfd/simple-mfd-i2c.c
+++ b/drivers/mfd/simple-mfd-i2c.c
@@ -21,6 +21,11 @@ static const struct regmap_config simple_regmap_config = {
.val_bits = 8,
};
+static const struct regmap_config simple_word_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+};
+
static int simple_mfd_i2c_probe(struct i2c_client *i2c)
{
const struct regmap_config *config;
@@ -39,6 +44,7 @@ static int simple_mfd_i2c_probe(struct i2c_client *i2c)
static const struct of_device_id simple_mfd_i2c_of_match[] = {
{ .compatible = "kontron,sl28cpld" },
+ { .compatible = "ampere,smpro", .data = &simple_word_regmap_config },
{}
};
MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match);
--
2.28.0
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