Signed-off-by: Álvaro Fernández Rojas noltari@gmail.com --- drivers/phy/Kconfig | 6 +++ drivers/phy/Makefile | 1 + drivers/phy/bcm6348-usbh-phy.c | 94 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 101 insertions(+) create mode 100644 drivers/phy/bcm6348-usbh-phy.c
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 3b9a09ce18..cec2130c05 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -59,6 +59,12 @@ config SPL_NOP_PHY This is useful when a driver uses the PHY framework but no real PHY hardware exists.
+config BCM6348_USBH_PHY + bool "BCM6348 USBH PHY support" + depends on PHY && ARCH_BMIPS + help + Support for the Broadcom MIPS BCM6348 USBH PHY. + config PIPE3_PHY bool "Support omap's PIPE3 PHY" depends on PHY && ARCH_OMAP2PLUS diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index 668040b0bb..06e01e86eb 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -7,6 +7,7 @@
obj-$(CONFIG_$(SPL_)PHY) += phy-uclass.o obj-$(CONFIG_$(SPL_)NOP_PHY) += nop-phy.o +obj-$(CONFIG_BCM6348_USBH_PHY) += bcm6348-usbh-phy.o obj-$(CONFIG_PHY_SANDBOX) += sandbox-phy.o obj-$(CONFIG_$(SPL_)PIPE3_PHY) += ti-pipe3-phy.o obj-$(CONFIG_STI_USB_PHY) += sti_usb_phy.o diff --git a/drivers/phy/bcm6348-usbh-phy.c b/drivers/phy/bcm6348-usbh-phy.c new file mode 100644 index 0000000000..55e865c53d --- /dev/null +++ b/drivers/phy/bcm6348-usbh-phy.c @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2018 Álvaro Fernández Rojas noltari@gmail.com + * + * Derived from linux/arch/mips/bcm63xx/usb-common.c: + * Copyright 2008 Maxime Bizon mbizon@freebox.fr + * Copyright 2013 Florian Fainelli florian@openwrt.org + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> +#include <generic-phy.h> +#include <reset.h> +#include <asm/io.h> +#include <dm/device.h> + +#define USBH_SETUP_PORT1_EN BIT(0) + +struct bcm6348_usbh_priv { + void __iomem *regs; +}; + +static int bcm6348_usbh_init(struct phy *phy) +{ + struct bcm6348_usbh_priv *priv = dev_get_priv(phy->dev); + + writel_be(USBH_SETUP_PORT1_EN, priv->regs); + + return 0; +} + +static struct phy_ops bcm6348_usbh_ops = { + .init = bcm6348_usbh_init, +}; + +static const struct udevice_id bcm6348_usbh_ids[] = { + { .compatible = "brcm,bcm6348-usbh" }, + { /* sentinel */ } +}; + +static int bcm6348_usbh_probe(struct udevice *dev) +{ + struct bcm6348_usbh_priv *priv = dev_get_priv(dev); + struct reset_ctl rst_ctl; + struct clk clk; + fdt_addr_t addr; + fdt_size_t size; + int ret; + + addr = devfdt_get_addr_size_index(dev, 0, &size); + if (addr == FDT_ADDR_T_NONE) + return -EINVAL; + + priv->regs = ioremap(addr, size); + + /* enable usbh clock */ + ret = clk_get_by_name(dev, "usbh", &clk); + if (ret < 0) + return ret; + + ret = clk_enable(&clk); + if (ret < 0) + return ret; + + ret = clk_free(&clk); + if (ret < 0) + return ret; + + /* perform reset */ + ret = reset_get_by_index(dev, 0, &rst_ctl); + if (ret < 0) + return ret; + + ret = reset_deassert(&rst_ctl); + if (ret < 0) + return ret; + + ret = reset_free(&rst_ctl); + if (ret < 0) + return ret; + + return 0; +} + +U_BOOT_DRIVER(bcm6348_usbh) = { + .name = "bcm6348-usbh", + .id = UCLASS_PHY, + .of_match = bcm6348_usbh_ids, + .ops = &bcm6348_usbh_ops, + .priv_auto_alloc_size = sizeof(struct bcm6348_usbh_priv), + .probe = bcm6348_usbh_probe, +};