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mfd: simple-mfd-i2c: Add Delta TN48M CPLD support 

Delta TN48M switches have a Lattice CPLD that serves
multiple purposes including being a GPIO expander.

So, lets use the simple I2C MFD driver to provide the MFD core.

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.

Fixes: b3dcb5de62 ("gpio: Add Delta TN48M CPLD GPIO driver")
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Link: https://lore.kernel.org/20220131133049.77780-2-robert.marko@sartura.hr
Link: https://lore.kernel.org/linux-gpio/20260112064950.3837737-1-rdunlap@infradead.org/
Signed-off-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260112-mfd-tn48m-v11-1-00c798d8cd2a@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Robert Marko 2026-01-12 17:14:52 +01:00 committed by Lee Jones
parent 414f65d673
commit 8f34c1a64c
2 changed files with 12 additions and 0 deletions
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11
drivers/mfd/Kconfig
View File

@ -407,6 +407,17 @@ config MFD_CS47L92
help
Support for Cirrus Logic CS42L92, CS47L92 and CS47L93 Smart Codecs
config MFD_TN48M_CPLD
tristate "Delta Networks TN48M switch CPLD driver"
depends on I2C
depends on ARCH_MVEBU || COMPILE_TEST
select MFD_SIMPLE_MFD_I2C
help
Select this option to enable support for Delta Networks TN48M switch
CPLD. It consists of reset and GPIO drivers. CPLD provides GPIOS-s
for the SFP slots as well as power supply related information.
SFP support depends on the GPIO driver being selected.
config PMIC_DA903X
bool "Dialog Semiconductor DA9030/DA9034 PMIC Support"
depends on I2C=y

1
drivers/mfd/simple-mfd-i2c.c
View File

@ -116,6 +116,7 @@ static const struct simple_mfd_data spacemit_p1 = {
};
static const struct of_device_id simple_mfd_i2c_of_match[] = {
{ .compatible = "delta,tn48m-cpld" },
{ .compatible = "fsl,ls1028aqds-fpga" },
{ .compatible = "fsl,lx2160aqds-fpga" },
{ .compatible = "fsl,lx2160ardb-fpga" },