[PATCH v9 03/13] mfd: simple-mfd-i2c: add sl28cpld support

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Add the core support for the board management controller found on the
SMARC-sAL28 board.

Also add a virtual symbol which pulls in the simple-mfd-i2c driver and
provide a common symbol on which the subdevice drivers can depend on.

At the moment, this controller is used on the Kontron SMARC-sAL28 board.

Signed-off-by: Michael Walle <michael@xxxxxxxx>
Acked-for-MFD-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
Changes since v8:
 - none

Changes since v7:
 - added MFD_SL28CPLD virtual Kconfig symbol
 - Please note, that I intentionally removed the Acked-for-MFD-by
   because of this change.

Changes since v6:
 - renamed "sl28cpld-r1" to "sl28cpld"

Changes since v5:
 - none

Changes since v4:
 - new patch

 drivers/mfd/Kconfig          | 10 ++++++++++
 drivers/mfd/simple-mfd-i2c.c |  1 +
 2 files changed, 11 insertions(+)

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 62f2838da66c..4b918fdcc7c7 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1174,6 +1174,16 @@ config MFD_SIMPLE_MFD_I2C
 	  sub-devices represented by child nodes in Device Tree will be
 	  subsequently registered.
 
+config MFD_SL28CPLD
+	tristate "Kontron sl28cpld Board Management Controller"
+	select MFD_SIMPLE_MFD_I2C
+	help
+	  Say yes here to enable support for the Kontron sl28cpld board
+	  management controller.
+
+	  It can be found on the following boards:
+		* SMARC-sAL28
+
 config MFD_SM501
 	tristate "Silicon Motion SM501"
 	depends on HAS_DMA
diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c
index 28e96a246be1..87f684cff9a1 100644
--- a/drivers/mfd/simple-mfd-i2c.c
+++ b/drivers/mfd/simple-mfd-i2c.c
@@ -38,6 +38,7 @@ static int simple_mfd_i2c_probe(struct i2c_client *i2c)
 }
 
 static const struct of_device_id simple_mfd_i2c_of_match[] = {
+	{ .compatible = "kontron,sl28cpld" },
 	{}
 };
 MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match);
-- 
2.20.1




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