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From: Ahmad Fatoum <>
Cc: Frank Wunderlich <>,
	Ahmad Fatoum <>
Subject: [PATCH v3 5/6] regulator: fixed: request vin-supply as needed
Date: Sun, 24 Jul 2022 08:43:36 +0200	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

So far, we never considered fixed-regulator vin-supply. This worked as
long as the vin-supply on the board was already turned on.

Do as Linux does and request vin-supply as needed. For deep probe
enabled boards, this may result in breakage that can be resolved with
barebox,allow-dummy-supply. For other boards, a warning will be
printed and the vin-supply populated with the dummy regulator.

Signed-off-by: Ahmad Fatoum <>
v2 -> v3:
  - no change
v1 -> v2:
  - new patch
 drivers/regulator/fixed.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index ec64f39b86c7..bdb01c0a9554 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -72,6 +72,9 @@ static int regulator_fixed_probe(struct device_d *dev)
 	if (!of_property_read_u32(np, "off-on-delay-us", &delay))
 		fix->rdesc.off_on_delay = delay;
+	if (of_find_property(np, "vin-supply", NULL))
+		fix->rdesc.supply_name = "vin";
 	ret = of_regulator_register(&fix->rdev, np);
 	if (ret)
 		goto err;

  parent reply	other threads:[~2022-07-24  6:45 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-24  6:43 [PATCH v3 1/6] mfd: implement mfd_add_devices Ahmad Fatoum
2022-07-24  6:43 ` [PATCH v3 2/6] regmap: implement regmap_init_i2c_smbus Ahmad Fatoum
2022-07-24  6:43 ` [PATCH v3 3/6] regulator: consult min_uv, max_uv for regulator_get_voltage Ahmad Fatoum
2022-07-24  6:43 ` [PATCH v3 4/6] regulator: recursively enable/disable regulator dependency tree Ahmad Fatoum
2022-07-24  6:43 ` Ahmad Fatoum [this message]
2022-07-24  6:43 ` [PATCH v3 6/6] regulator: add Rockchip rk808 support Ahmad Fatoum

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