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regulator: rzg2l-usbphy: Add new driver

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Add a new regulator driver to control the USB VBUS supply on the Renesas
RZ/G2L and related SoCs.

Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
This commit is contained in:
Paul Barker
2025-03-11 20:57:44 +00:00
committed by Marek Vasut
parent b85fe01d7d
commit e210e38a90
3 changed files with 51 additions and 0 deletions
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8
drivers/power/regulator/Kconfig
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@@ -478,3 +478,11 @@ config DM_REGULATOR_TPS65219
features for REGULATOR TPS65219 and the family of TPS65219 PMICs.
TPS65219 series of PMICs have 3 single phase BUCKs & 4 LDOs.
The driver implements get/set api for value and enable.
config REGULATOR_RZG2L_USBPHY
bool "Enable driver for RZ/G2L USB PHY VBUS supply"
depends on DM_REGULATOR
help
Enable this option to support controlling the VBUS supply in
the USB PHY peripheral of the Renesas RZ/G2L SoC. This option
is required in order to use the USB OTG port.

1
drivers/power/regulator/Makefile
View File

@@ -42,3 +42,4 @@ obj-$(CONFIG_DM_REGULATOR_TPS65941) += tps65941_regulator.o
obj-$(CONFIG_DM_REGULATOR_SCMI) += scmi_regulator.o
obj-$(CONFIG_$(XPL_)DM_REGULATOR_ANATOP) += anatop_regulator.o
obj-$(CONFIG_DM_REGULATOR_TPS65219) += tps65219_regulator.o
obj-$(CONFIG_REGULATOR_RZG2L_USBPHY) += rzg2l-usbphy-regulator.o

42
drivers/power/regulator/rzg2l-usbphy-regulator.c Normal file
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@@ -0,0 +1,42 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2024 Renesas Electronics Corporation
*/
#include <asm/io.h>
#include <dm.h>
#include <power/regulator.h>
#include <renesas/rzg2l-usbphy.h>
#define VBENCTL 0x03c
#define VBENCTL_VBUS_SEL BIT(0)
static int rzg2l_usbphy_regulator_set_enable(struct udevice *dev, bool enable)
{
struct rzg2l_usbphy_ctrl_priv *priv = dev_get_priv(dev->parent);
if (enable)
clrbits_le32(priv->regs + VBENCTL, VBENCTL_VBUS_SEL);
else
setbits_le32(priv->regs + VBENCTL, VBENCTL_VBUS_SEL);
return 0;
}
static int rzg2l_usbphy_regulator_get_enable(struct udevice *dev)
{
struct rzg2l_usbphy_ctrl_priv *priv = dev_get_priv(dev->parent);
return !!readl(priv->regs + VBENCTL) & VBENCTL_VBUS_SEL;
}
static const struct dm_regulator_ops rzg2l_usbphy_regulator_ops = {
.get_enable = rzg2l_usbphy_regulator_get_enable,
.set_enable = rzg2l_usbphy_regulator_set_enable,
};
U_BOOT_DRIVER(rzg2l_usbphy_regulator) = {
.name = "rzg2l_usbphy_regulator",
.id = UCLASS_REGULATOR,
.ops = &rzg2l_usbphy_regulator_ops,
};