diff options
Diffstat (limited to 'drivers/core/syscon-uclass.c')
| -rw-r--r-- | drivers/core/syscon-uclass.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/core/syscon-uclass.c b/drivers/core/syscon-uclass.c index 303e166a69..661cf61d62 100644 --- a/drivers/core/syscon-uclass.c +++ b/drivers/core/syscon-uclass.c @@ -53,6 +53,29 @@ static int syscon_pre_probe(struct udevice *dev) #endif } +struct regmap *syscon_regmap_lookup_by_phandle(struct udevice *dev, + const char *name) +{ + struct udevice *syscon; + struct regmap *r; + int err; + + err = uclass_get_device_by_phandle(UCLASS_SYSCON, dev, + name, &syscon); + if (err) { + dev_dbg(dev, "unable to find syscon device\n"); + return ERR_PTR(err); + } + + r = syscon_get_regmap(syscon); + if (!r) { + dev_dbg(dev, "unable to find regmap\n"); + return ERR_PTR(-ENODEV); + } + + return r; +} + int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp) { struct udevice *dev; |