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net: pse-pd: pd692x0: support disabling disable ports GPIO

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Microchip PSE controllers have a dedicated disable ports input that like it
name says disables PoE on all ports.

So lets support parsing that GPIO and using the GPIO flags to set it low
by default and enable PoE on all ports during probe.

Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Link: https://patch.msgid.link/20260607165600.1260210-2-robert.marko@sartura.hr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Robert Marko 2026-06-07 18:55:36 +02:00 committed by Jakub Kicinski
parent a1c4fa71bb
commit 90e63d5354
1 changed files with 7 additions and 0 deletions
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7
drivers/net/pse-pd/pd692x0.c
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@ -7,6 +7,7 @@
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
@ -1757,6 +1758,7 @@ static int pd692x0_i2c_probe(struct i2c_client *client)
static const char * const regulators[] = { "vdd", "vdda" };
struct pd692x0_msg msg, buf = {0}, zero = {0};
struct device *dev = &client->dev;
struct gpio_desc *disable_ports;
struct pd692x0_msg_ver ver;
struct pd692x0_priv *priv;
struct fw_upload *fwl;
@ -1780,6 +1782,11 @@ static int pd692x0_i2c_probe(struct i2c_client *client)
priv->client = client;
i2c_set_clientdata(client, priv);
disable_ports = devm_gpiod_get_optional(dev, "disable-ports", GPIOD_OUT_LOW);
if (IS_ERR(disable_ports))
return dev_err_probe(&client->dev, PTR_ERR(disable_ports),
"Failed to get disable ports GPIO\n");
ret = i2c_master_recv(client, (u8 *)&buf, sizeof(buf));
if (ret != sizeof(buf)) {
dev_err(dev, "Failed to get device status\n");