Signed-off-by: Álvaro Fernández Rojas <nolt...@gmail.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierz...@gmail.com>
---
v2: no changes
drivers/phy/Kconfig | 7 ++
drivers/phy/Makefile | 1 +
drivers/phy/bcm6318-usbh-phy.c | 144 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 152 insertions(+)
create mode 100644 drivers/phy/bcm6318-usbh-phy.c
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index d3fa9ded2a..4e9d09910c 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -59,6 +59,13 @@ config SPL_NOP_PHY
This is useful when a driver uses the PHY framework but no real PHY
hardware exists.
+config BCM6318_USBH_PHY
+ bool "BCM6318 USBH PHY support"
+ depends on PHY && ARCH_BMIPS
+ select POWER_DOMAIN
+ help
+ Support for the Broadcom MIPS BCM6318 USBH PHY.
+
config BCM6348_USBH_PHY
bool "BCM6348 USBH PHY support"
depends on PHY && ARCH_BMIPS
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index d8239854a3..68087ae3b1 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-$(CONFIG_BCM6318_USBH_PHY) += bcm6318-usbh-phy.o
obj-$(CONFIG_BCM6348_USBH_PHY) += bcm6348-usbh-phy.o
obj-$(CONFIG_BCM6358_USBH_PHY) += bcm6358-usbh-phy.o
obj-$(CONFIG_BCM6368_USBH_PHY) += bcm6368-usbh-phy.o
diff --git a/drivers/phy/bcm6318-usbh-phy.c b/drivers/phy/bcm6318-usbh-phy.c
new file mode 100644
index 0000000000..9f22269ced
--- /dev/null
+++ b/drivers/phy/bcm6318-usbh-phy.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2018 Álvaro Fernández Rojas <nolt...@gmail.com>
+ *
+ * Derived from linux/arch/mips/bcm63xx/usb-common.c:
+ * Copyright 2008 Maxime Bizon <mbi...@freebox.fr>
+ * Copyright 2013 Florian Fainelli <flor...@openwrt.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <generic-phy.h>
+#include <power-domain.h>
+#include <reset.h>
+#include <asm/io.h>
+#include <dm/device.h>
+
+/* USBH Setup register */
+#define USBH_SETUP_REG 0x00
+#define USBH_SETUP_IOC BIT(4)
+
+/* USBH PLL Control register */
+#define USBH_PLL_REG 0x04
+#define USBH_PLL_SUSP_EN BIT(27)
+#define USBH_PLL_IDDQ_PWRDN BIT(31)
+
+/* USBH Swap Control register */
+#define USBH_SWAP_REG 0x0c
+#define USBH_SWAP_OHCI_DATA BIT(0)
+#define USBH_SWAP_OHCI_ENDIAN BIT(1)
+#define USBH_SWAP_EHCI_DATA BIT(3)
+#define USBH_SWAP_EHCI_ENDIAN BIT(4)
+
+/* USBH Sim Control register */
+#define USBH_SIM_REG 0x20
+#define USBH_SIM_LADDR BIT(5)
+
+struct bcm6318_usbh_priv {
+ void __iomem *regs;
+};
+
+static int bcm6318_usbh_init(struct phy *phy)
+{
+ struct bcm6318_usbh_priv *priv = dev_get_priv(phy->dev);
+
+ /* enable pll control susp */
+ setbits_be32(priv->regs + USBH_PLL_REG, USBH_PLL_SUSP_EN);
+
+ /* configure to work in native cpu endian */
+ clrsetbits_be32(priv->regs + USBH_SWAP_REG,
+ USBH_SWAP_EHCI_ENDIAN | USBH_SWAP_OHCI_ENDIAN,
+ USBH_SWAP_EHCI_DATA | USBH_SWAP_OHCI_DATA);
+
+ /* setup config */
+ setbits_be32(priv->regs + USBH_SETUP_REG, USBH_SETUP_IOC);
+
+ /* disable pll control pwrdn */
+ clrbits_be32(priv->regs + USBH_PLL_REG, USBH_PLL_IDDQ_PWRDN);
+
+ /* sim control config */
+ setbits_be32(priv->regs + USBH_SIM_REG, USBH_SIM_LADDR);
+
+ return 0;
+}
+
+static struct phy_ops bcm6318_usbh_ops = {
+ .init = bcm6318_usbh_init,
+};
+
+static const struct udevice_id bcm6318_usbh_ids[] = {
+ { .compatible = "brcm,bcm6318-usbh" },
+ { /* sentinel */ }
+};
+
+static int bcm6318_usbh_probe(struct udevice *dev)
+{
+ struct bcm6318_usbh_priv *priv = dev_get_priv(dev);
+ struct power_domain pwr_dom;
+ 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;
+
+ /* enable power domain */
+ ret = power_domain_get(dev, &pwr_dom);
+ if (ret < 0)
+ return ret;
+
+ ret = power_domain_on(&pwr_dom);
+ if (ret < 0)
+ return ret;
+
+ ret = power_domain_free(&pwr_dom);
+ 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;
+
+ mdelay(100);
+
+ return 0;
+}
+
+U_BOOT_DRIVER(bcm6318_usbh) = {
+ .name = "bcm6318-usbh",
+ .id = UCLASS_PHY,
+ .of_match = bcm6318_usbh_ids,
+ .ops = &bcm6318_usbh_ops,
+ .priv_auto_alloc_size = sizeof(struct bcm6318_usbh_priv),
+ .probe = bcm6318_usbh_probe,
+};
--
2.11.0
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