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mfd: bcm590xx: Add support for multiple device types + BCM59054 compatible

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The BCM59054 is another chip from the BCM590xx line of PMUs, commonly
used on devices with the BCM21664/BCM23550 chipsets.

Prepare the BCM590xx driver for supporting other devices by adding the
PMUID register values for supported chip types and store them in the
MFD data struct as "pmu_id". (These will be checked against the actual
PMUID register values in a later commit.)

Then, add a DT compatible for the BCM59054, and provide the PMU ID as
OF match data.

Signed-off-by: Artur Weber <aweber.kernel@gmail.com>
Reviewed-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Link: https://lore.kernel.org/r/20250515-bcm59054-v9-3-14ba0ea2ea5b@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Artur Weber 2025-05-15 16:16:30 +02:00 • committed by Lee Jones
parent 13980ebf8e
commit 6adf48a3aa
2 changed files with 18 additions and 1 deletions
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12
drivers/mfd/bcm590xx.c
View file

@ -50,6 +50,8 @@ static int bcm590xx_i2c_probe(struct i2c_client *i2c_pri)
bcm590xx->dev = &i2c_pri->dev;
bcm590xx->i2c_pri = i2c_pri;
bcm590xx->pmu_id = (uintptr_t) of_device_get_match_data(bcm590xx->dev);
bcm590xx->regmap_pri = devm_regmap_init_i2c(i2c_pri,
&bcm590xx_regmap_config_pri);
if (IS_ERR(bcm590xx->regmap_pri)) {
@ -91,12 +93,20 @@ err:
}
static const struct of_device_id bcm590xx_of_match[] = {
{ .compatible = "brcm,bcm59056" },
{
.compatible = "brcm,bcm59054",
.data = (void *)BCM590XX_PMUID_BCM59054,
},
{
.compatible = "brcm,bcm59056",
.data = (void *)BCM590XX_PMUID_BCM59056,
},
{ }
};
MODULE_DEVICE_TABLE(of, bcm590xx_of_match);
static const struct i2c_device_id bcm590xx_i2c_id[] = {
{ "bcm59054" },
{ "bcm59056" },
{ }
};

7
include/linux/mfd/bcm590xx.h
View file

@ -13,6 +13,10 @@
#include <linux/i2c.h>
#include <linux/regmap.h>
/* PMU ID register values; also used as device type */
#define BCM590XX_PMUID_BCM59054 0x54
#define BCM590XX_PMUID_BCM59056 0x56
/* max register address */
#define BCM590XX_MAX_REGISTER_PRI 0xe7
#define BCM590XX_MAX_REGISTER_SEC 0xf0
@ -24,6 +28,9 @@ struct bcm590xx {
struct regmap *regmap_pri;
struct regmap *regmap_sec;
unsigned int id;
/* PMU ID value; also used as device type */
u8 pmu_id;
};
#endif /* __LINUX_MFD_BCM590XX_H */