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Message-Id: <20250404-ml-topic-tcpci-v1-1-4442c7d0ee1e@pengutronix.de>
Date: Fri, 04 Apr 2025 01:17:20 +0200
From: Michael Grzeschik <m.grzeschik@...gutronix.de>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel@...gutronix.de, Michael Grzeschik <m.grzeschik@...gutronix.de>
Subject: [PATCH] usb: typec: tcpci: add regulator support
The tcpci chip vbus pin is possibly driven by an regulator. This patch
is adding support to enable an optional vdd regulator before probing.
Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
---
drivers/usb/typec/tcpm/tcpci.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index 19ab6647af706..a56e31b20c214 100644
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -17,6 +17,7 @@
#include <linux/usb/tcpci.h>
#include <linux/usb/tcpm.h>
#include <linux/usb/typec.h>
+#include <linux/regulator/consumer.h>
#define PD_RETRY_COUNT_DEFAULT 3
#define PD_RETRY_COUNT_3_0_OR_HIGHER 2
@@ -905,6 +906,10 @@ static int tcpci_probe(struct i2c_client *client)
int err;
u16 val = 0;
+ err = devm_regulator_get_enable_optional(&client->dev, "vdd");
+ if (err && err != -ENODEV)
+ return dev_err_probe(&client->dev, err, "Failed to get regulator\n");
+
chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;
---
base-commit: a1b5bd45d4ee58af4f56e49497b8c3db96d8f8a3
change-id: 20250404-ml-topic-tcpci-524d1d6bfede
Best regards,
--
Michael Grzeschik <m.grzeschik@...gutronix.de>
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