@@ -91,6 +91,7 @@ obj-y += dfu/
obj-$(CONFIG_PCH) += pch/
obj-y += phy/allwinner/
obj-y += phy/marvell/
+obj-y += phy/rockchip/
obj-y += rtc/
obj-y += scsi/
obj-y += sound/
@@ -225,4 +225,5 @@ config PHY_MTK_TPHY
multi-ports is first version, otherwise is second veriosn,
so you can easily distinguish them by banks layout.
+source "drivers/phy/rockchip/Kconfig"
endmenu
new file mode 100644
@@ -0,0 +1,14 @@
+#
+# Phy drivers for Rockchip platforms
+#
+
+menu "Rockchip PHY driver"
+
+config PHY_ROCKCHIP_INNO_USB2
+ bool "Rockchip INNO USB2PHY Driver"
+ depends on ARCH_ROCKCHIP
+ select PHY
+ help
+ Support for Rockchip USB2.0 PHY with Innosilicon IP block.
+
+endmenu
new file mode 100644
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2020 Amarula Solutions(India)
+#
+
+obj-$(CONFIG_PHY_ROCKCHIP_INNO_USB2) += phy-rockchip-inno-usb2.o
new file mode 100644
@@ -0,0 +1,312 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Rockchip USB2.0 PHY with Innosilicon IP block driver
+ *
+ * Copyright (C) 2016 Fuzhou Rockchip Electronics Co., Ltd
+ * Copyright (C) 2020 Amarula Solutions(India)
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <dm/device_compat.h>
+#include <dm/lists.h>
+#include <generic-phy.h>
+#include <reset.h>
+#include <syscon.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <linux/iopoll.h>
+#include <asm/arch-rockchip/clock.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define usleep_range(a, b) udelay((b))
+#define BIT_WRITEABLE_SHIFT 16
+
+enum rockchip_usb2phy_port_id {
+ USB2PHY_PORT_OTG,
+ USB2PHY_PORT_HOST,
+ USB2PHY_NUM_PORTS,
+};
+
+struct usb2phy_reg {
+ unsigned int offset;
+ unsigned int bitend;
+ unsigned int bitstart;
+ unsigned int disable;
+ unsigned int enable;
+};
+
+struct rockchip_usb2phy_port_cfg {
+ struct usb2phy_reg phy_sus;
+ struct usb2phy_reg bvalid_det_en;
+ struct usb2phy_reg bvalid_det_st;
+ struct usb2phy_reg bvalid_det_clr;
+ struct usb2phy_reg ls_det_en;
+ struct usb2phy_reg ls_det_st;
+ struct usb2phy_reg ls_det_clr;
+ struct usb2phy_reg utmi_avalid;
+ struct usb2phy_reg utmi_bvalid;
+ struct usb2phy_reg utmi_ls;
+ struct usb2phy_reg utmi_hstdet;
+};
+
+struct rockchip_usb2phy_cfg {
+ unsigned int reg;
+ const struct rockchip_usb2phy_port_cfg port_cfgs[USB2PHY_NUM_PORTS];
+};
+
+struct rockchip_usb2phy {
+ void *reg_base;
+ struct clk phyclk;
+ const struct rockchip_usb2phy_cfg *phy_cfg;
+};
+
+static inline int property_enable(void *reg_base,
+ const struct usb2phy_reg *reg, bool en)
+{
+ unsigned int val, mask, tmp;
+
+ tmp = en ? reg->enable : reg->disable;
+ mask = GENMASK(reg->bitend, reg->bitstart);
+ val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT);
+
+ return writel(val, reg_base + reg->offset);
+}
+
+static const
+struct rockchip_usb2phy_port_cfg *us2phy_get_port(struct phy *phy)
+{
+ struct udevice *parent = dev_get_parent(phy->dev);
+ struct rockchip_usb2phy *priv = dev_get_priv(parent);
+ const struct rockchip_usb2phy_cfg *phy_cfg = priv->phy_cfg;
+
+ return &phy_cfg->port_cfgs[phy->id];
+}
+
+static int rockchip_usb2phy_power_on(struct phy *phy)
+{
+ struct udevice *parent = dev_get_parent(phy->dev);
+ struct rockchip_usb2phy *priv = dev_get_priv(parent);
+ const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
+
+ property_enable(priv->reg_base, &port_cfg->phy_sus, false);
+
+ /* waiting for the utmi_clk to become stable */
+ usleep_range(1500, 2000);
+
+ return 0;
+}
+
+static int rockchip_usb2phy_power_off(struct phy *phy)
+{
+ struct udevice *parent = dev_get_parent(phy->dev);
+ struct rockchip_usb2phy *priv = dev_get_priv(parent);
+ const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
+
+ property_enable(priv->reg_base, &port_cfg->phy_sus, true);
+
+ return 0;
+}
+
+static int rockchip_usb2phy_init(struct phy *phy)
+{
+ struct udevice *parent = dev_get_parent(phy->dev);
+ struct rockchip_usb2phy *priv = dev_get_priv(parent);
+ const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
+ int ret;
+
+ ret = clk_enable(&priv->phyclk);
+ if (ret) {
+ dev_err(phy->dev, "failed to enable phyclk (ret=%d)\n", ret);
+ return ret;
+ }
+
+ if (phy->id == USB2PHY_PORT_OTG) {
+ property_enable(priv->reg_base, &port_cfg->bvalid_det_clr, true);
+ property_enable(priv->reg_base, &port_cfg->bvalid_det_en, true);
+ } else if (phy->id == USB2PHY_PORT_HOST) {
+ property_enable(priv->reg_base, &port_cfg->bvalid_det_clr, true);
+ property_enable(priv->reg_base, &port_cfg->bvalid_det_en, true);
+ }
+
+ return 0;
+}
+
+static int rockchip_usb2phy_exit(struct phy *phy)
+{
+ struct udevice *parent = dev_get_parent(phy->dev);
+ struct rockchip_usb2phy *priv = dev_get_priv(parent);
+
+ clk_disable(&priv->phyclk);
+
+ return 0;
+}
+
+static int rockchip_usb2phy_of_xlate(struct phy *phy,
+ struct ofnode_phandle_args *args)
+{
+ const char *name = phy->dev->name;
+
+ if (!strcasecmp(name, "host-port"))
+ phy->id = USB2PHY_PORT_HOST;
+ else if (!strcasecmp(name, "otg-port"))
+ phy->id = USB2PHY_PORT_OTG;
+ else
+ dev_err(phy->dev, "improper %s device\n", name);
+
+ return 0;
+}
+
+static struct phy_ops rockchip_usb2phy_ops = {
+ .init = rockchip_usb2phy_init,
+ .exit = rockchip_usb2phy_exit,
+ .power_on = rockchip_usb2phy_power_on,
+ .power_off = rockchip_usb2phy_power_off,
+ .of_xlate = rockchip_usb2phy_of_xlate,
+};
+
+static int rockchip_usb2phy_probe(struct udevice *dev)
+{
+ struct rockchip_usb2phy *priv = dev_get_priv(dev);
+ const struct rockchip_usb2phy_cfg *phy_cfgs;
+ unsigned int reg;
+ int index, ret;
+
+ priv->reg_base = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+ if (IS_ERR(priv->reg_base))
+ return PTR_ERR(priv->reg_base);
+
+ ret = ofnode_read_u32(dev_ofnode(dev), "reg", ®);
+ if (ret) {
+ dev_err(dev, "failed to read reg property (ret = %d)\n", ret);
+ return ret;
+ }
+
+ phy_cfgs = (const struct rockchip_usb2phy_cfg *)
+ dev_get_driver_data(dev);
+ if (!phy_cfgs)
+ return -EINVAL;
+
+ /* find out a proper config which can be matched with dt. */
+ index = 0;
+ while (phy_cfgs[index].reg) {
+ if (phy_cfgs[index].reg == reg) {
+ priv->phy_cfg = &phy_cfgs[index];
+ break;
+ }
+
+ ++index;
+ }
+
+ if (!priv->phy_cfg) {
+ dev_err(dev, "failed find proper phy-cfg\n");
+ return -EINVAL;
+ }
+
+ ret = clk_get_by_name(dev, "phyclk", &priv->phyclk);
+ if (ret) {
+ dev_err(dev, "failed to get the phyclk (ret=%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int rockchip_usb2phy_bind(struct udevice *dev)
+{
+ struct udevice *usb2phy_dev;
+ ofnode node;
+ const char *name;
+ int ret = 0;
+
+ dev_for_each_subnode(node, dev) {
+ if (!ofnode_valid(node)) {
+ dev_info(dev, "subnode %s not found\n", dev->name);
+ return -ENXIO;
+ }
+
+ name = ofnode_get_name(node);
+ dev_dbg(dev, "subnode %s\n", name);
+
+ ret = device_bind_driver_to_node(dev, "rockchip_usb2phy_port",
+ name, node, &usb2phy_dev);
+ if (ret) {
+ dev_err(dev,
+ "'%s' cannot bind 'rockchip_usb2phy_port'\n", name);
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+static const struct rockchip_usb2phy_cfg rk3399_usb2phy_cfgs[] = {
+ {
+ .reg = 0xe450,
+ .port_cfgs = {
+ [USB2PHY_PORT_OTG] = {
+ .phy_sus = { 0xe454, 1, 0, 2, 1 },
+ .bvalid_det_en = { 0xe3c0, 3, 3, 0, 1 },
+ .bvalid_det_st = { 0xe3e0, 3, 3, 0, 1 },
+ .bvalid_det_clr = { 0xe3d0, 3, 3, 0, 1 },
+ .utmi_avalid = { 0xe2ac, 7, 7, 0, 1 },
+ .utmi_bvalid = { 0xe2ac, 12, 12, 0, 1 },
+ },
+ [USB2PHY_PORT_HOST] = {
+ .phy_sus = { 0xe458, 1, 0, 0x2, 0x1 },
+ .ls_det_en = { 0xe3c0, 6, 6, 0, 1 },
+ .ls_det_st = { 0xe3e0, 6, 6, 0, 1 },
+ .ls_det_clr = { 0xe3d0, 6, 6, 0, 1 },
+ .utmi_ls = { 0xe2ac, 22, 21, 0, 1 },
+ .utmi_hstdet = { 0xe2ac, 23, 23, 0, 1 }
+ }
+ },
+ },
+ {
+ .reg = 0xe460,
+ .port_cfgs = {
+ [USB2PHY_PORT_OTG] = {
+ .phy_sus = { 0xe464, 1, 0, 2, 1 },
+ .bvalid_det_en = { 0xe3c0, 8, 8, 0, 1 },
+ .bvalid_det_st = { 0xe3e0, 8, 8, 0, 1 },
+ .bvalid_det_clr = { 0xe3d0, 8, 8, 0, 1 },
+ .utmi_avalid = { 0xe2ac, 10, 10, 0, 1 },
+ .utmi_bvalid = { 0xe2ac, 16, 16, 0, 1 },
+ },
+ [USB2PHY_PORT_HOST] = {
+ .phy_sus = { 0xe468, 1, 0, 0x2, 0x1 },
+ .ls_det_en = { 0xe3c0, 11, 11, 0, 1 },
+ .ls_det_st = { 0xe3e0, 11, 11, 0, 1 },
+ .ls_det_clr = { 0xe3d0, 11, 11, 0, 1 },
+ .utmi_ls = { 0xe2ac, 26, 25, 0, 1 },
+ .utmi_hstdet = { 0xe2ac, 27, 27, 0, 1 }
+ }
+ },
+ },
+ { /* sentinel */ }
+};
+
+static const struct udevice_id rockchip_usb2phy_ids[] = {
+ {
+ .compatible = "rockchip,rk3399-usb2phy",
+ .data = (ulong)&rk3399_usb2phy_cfgs,
+ },
+ { /* sentinel */ }
+};
+
+U_BOOT_DRIVER(rockchip_usb2phy_port) = {
+ .name = "rockchip_usb2phy_port",
+ .id = UCLASS_PHY,
+ .ops = &rockchip_usb2phy_ops,
+};
+
+U_BOOT_DRIVER(rockchip_usb2phy) = {
+ .name = "rockchip_usb2phy",
+ .id = UCLASS_PHY,
+ .of_match = rockchip_usb2phy_ids,
+ .probe = rockchip_usb2phy_probe,
+ .bind = rockchip_usb2phy_bind,
+ .priv_auto_alloc_size = sizeof(struct rockchip_usb2phy),
+};