[PATCH 5/8] pci: Add Rockchip PCIe controller driver

Kever Yang
2020-04-28T09:53:53Z

On 2020/4/25 ??7:03, Jagan Teki wrote:
> Add Rockchip PCIe controller driver for rk3399 platform.
>
> Driver support Gen1 by operating as a Root complex.
>
> Thanks to Patrick for initial work.
>
> Signed-off-by: Patrick Wildt <patrick@blueri.se>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

Thanks,
- Kever
> ---
> drivers/pci/Kconfig | 8 +
> drivers/pci/Makefile | 1 +
> drivers/pci/pcie_rockchip.c | 460 ++++++++++++++++++++++++++++++++++++
> drivers/pci/pcie_rockchip.h | 79 +++++++
> 4 files changed, 548 insertions(+)
> create mode 100644 drivers/pci/pcie_rockchip.c
> create mode 100644 drivers/pci/pcie_rockchip.h
>
> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> index 437cd9a055..3dba84103b 100644
> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -197,4 +197,12 @@ config PCIE_MEDIATEK
> Say Y here if you want to enable Gen2 PCIe controller,
> which could be found on MT7623 SoC family.
>
> +config PCIE_ROCKCHIP
> + bool "Enable Rockchip PCIe driver"
> + select DM_PCI
> + default y if ROCKCHIP_RK3399
> + help
> + Say Y here if you want to enable PCIe controller support on
> + Rockchip SoCs.
> +
> endif
> diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
> index c051ecc9f3..493e9354dd 100644
> --- a/drivers/pci/Makefile
> +++ b/drivers/pci/Makefile
> @@ -43,3 +43,4 @@ obj-$(CONFIG_PCI_PHYTIUM) += pcie_phytium.o
> obj-$(CONFIG_PCIE_INTEL_FPGA) += pcie_intel_fpga.o
> obj-$(CONFIG_PCI_KEYSTONE) += pcie_dw_ti.o
> obj-$(CONFIG_PCIE_MEDIATEK) += pcie_mediatek.o
> +obj-$(CONFIG_PCIE_ROCKCHIP) += pcie_rockchip.o
> diff --git a/drivers/pci/pcie_rockchip.c b/drivers/pci/pcie_rockchip.c
> new file mode 100644
> index 0000000000..adc64aedf5
> --- /dev/null
> +++ b/drivers/pci/pcie_rockchip.c
> @@ -0,0 +1,460 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Rockchip AXI PCIe host controller driver
> + *
> + * Copyright (c) 2016 Rockchip, Inc.
> + * Copyright (c) 2020 Amarula Solutions(India)
> + * Copyright (c) 2020 Jagan Teki <jagan@amarulasolutions.com>
> + * Copyright (c) 2019 Patrick Wildt <patrick@blueri.se>
> + * Copyright (c) 2018 Mark Kettenis <kettenis@openbsd.org>
> + *
> + * Bits taken from Linux Rockchip PCIe host controller.
> + */
> +
> +#include <common.h>
> +#include <clk.h>
> +#include <dm.h>
> +#include <dm/device_compat.h>
> +#include <pci.h>
> +#include <power-domain.h>
> +#include <power/regulator.h>
> +#include <reset.h>
> +#include <syscon.h>
> +#include <asm/io.h>
> +#include <asm-generic/gpio.h>
> +#include <asm/arch-rockchip/clock.h>
> +#include <linux/iopoll.h>
> +
> +#include "pcie_rockchip.h"
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +static int rockchip_pcie_rd_conf(const struct udevice *bus, pci_dev_t bdf,
> + uint offset, ulong *valuep,
> + enum pci_size_t size)
> +{
> + struct rockchip_pcie *priv = dev_get_priv(bus);
> + ulong value;
> + u32 off;
> +
> + off = (PCI_BUS(bdf) << 20) | (PCI_DEV(bdf) << 15) |
> + (PCI_FUNC(bdf) << 12) | (offset & ~0x3);
> +
> + if ((PCI_BUS(bdf) == priv->first_busno) && (PCI_DEV(bdf) == 0)) {
> + value = readl(priv->apb_base + PCIE_RC_NORMAL_BASE + off);
> + *valuep = pci_conv_32_to_size(value, offset, size);
> + return 0;
> + }
> +
> + if ((PCI_BUS(bdf) == priv->first_busno + 1) && (PCI_DEV(bdf) == 0)) {
> + value = readl(priv->axi_base + off);
> + *valuep = pci_conv_32_to_size(value, offset, size);
> + return 0;
> + }
> +
> + *valuep = pci_get_ff(size);
> +
> + return 0;
> +}
> +
> +static int rockchip_pcie_wr_conf(struct udevice *bus, pci_dev_t bdf,
> + uint offset, ulong value,
> + enum pci_size_t size)
> +{
> + struct rockchip_pcie *priv = dev_get_priv(bus);
> + ulong old;
> + u32 off;
> +
> + off = (PCI_BUS(bdf) << 20) | (PCI_DEV(bdf) << 15) |
> + (PCI_FUNC(bdf) << 12) | (offset & ~0x3);
> +
> + if ((PCI_BUS(bdf) == priv->first_busno) && (PCI_DEV(bdf) == 0)) {
> + old = readl(priv->apb_base + PCIE_RC_NORMAL_BASE + off);
> + value = pci_conv_size_to_32(old, value, offset, size);
> + writel(value, priv->apb_base + PCIE_RC_NORMAL_BASE + off);
> + return 0;
> + }
> +
> + if ((PCI_BUS(bdf) == priv->first_busno + 1) && (PCI_DEV(bdf) == 0)) {
> + old = readl(priv->axi_base + off);
> + value = pci_conv_size_to_32(old, value, offset, size);
> + writel(value, priv->axi_base + off);
> + return 0;
> + }
> +
> + return 0;
> +}
> +
> +static int rockchip_pcie_atr_init(struct rockchip_pcie *priv)
> +{
> + struct udevice *ctlr = pci_get_controller(priv->dev);
> + struct pci_controller *hose = dev_get_uclass_priv(ctlr);
> + u64 addr, size, offset;
> + u32 type;
> + int i, region;
> +
> + /* Use region 0 to map PCI configuration space. */
> + writel(25 - 1, priv->apb_base + PCIE_ATR_OB_ADDR0(0));
> + writel(0, priv->apb_base + PCIE_ATR_OB_ADDR1(0));
> + writel(PCIE_ATR_HDR_CFG_TYPE0 | PCIE_ATR_HDR_RID,
> + priv->apb_base + PCIE_ATR_OB_DESC0(0));
> + writel(0, priv->apb_base + PCIE_ATR_OB_DESC1(0));
> +
> + for (i = 0; i < hose->region_count; i++) {
> + if (hose->regions[i].flags == PCI_REGION_SYS_MEMORY)
> + continue;
> +
> + if (hose->regions[i].flags == PCI_REGION_IO)
> + type = PCIE_ATR_HDR_IO;
> + else
> + type = PCIE_ATR_HDR_MEM;
> +
> + /* Only support identity mappings. */
> + if (hose->regions[i].bus_start !=
> + hose->regions[i].phys_start)
> + return -EINVAL;
> +
> + /* Only support mappings aligned on a region boundary. */
> + addr = hose->regions[i].bus_start;
> + if (addr & (PCIE_ATR_OB_REGION_SIZE - 1))
> + return -EINVAL;
> +
> + /* Mappings should lie between AXI and APB regions. */
> + size = hose->regions[i].size;
> + if (addr < (u64)priv->axi_base + PCIE_ATR_OB_REGION0_SIZE)
> + return -EINVAL;
> + if (addr + size > (u64)priv->apb_base)
> + return -EINVAL;
> +
> + offset = addr - (u64)priv->axi_base - PCIE_ATR_OB_REGION0_SIZE;
> + region = 1 + (offset / PCIE_ATR_OB_REGION_SIZE);
> + while (size > 0) {
> + writel(32 - 1,
> + priv->apb_base + PCIE_ATR_OB_ADDR0(region));
> + writel(0, priv->apb_base + PCIE_ATR_OB_ADDR1(region));
> + writel(type | PCIE_ATR_HDR_RID,
> + priv->apb_base + PCIE_ATR_OB_DESC0(region));
> + writel(0, priv->apb_base + PCIE_ATR_OB_DESC1(region));
> +
> + addr += PCIE_ATR_OB_REGION_SIZE;
> + size -= PCIE_ATR_OB_REGION_SIZE;
> + region++;
> + }
> + }
> +
> + /* Passthrough inbound translations unmodified. */
> + writel(32 - 1, priv->apb_base + PCIE_ATR_IB_ADDR0(2));
> + writel(0, priv->apb_base + PCIE_ATR_IB_ADDR1(2));
> +
> + return 0;
> +}
> +
> +static int rockchip_pcie_init_port(struct udevice *dev)
> +{
> + struct rockchip_pcie *priv = dev_get_priv(dev);
> + u32 cr, val, status;
> + int ret;
> +
> + if (dm_gpio_is_valid(&priv->ep_gpio))
> + dm_gpio_set_value(&priv->ep_gpio, 0);
> +
> + ret = reset_assert(&priv->aclk_rst);
> + if (ret) {
> + dev_err(dev, "failed to assert aclk reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_assert(&priv->pclk_rst);
> + if (ret) {
> + dev_err(dev, "failed to assert pclk reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_assert(&priv->pm_rst);
> + if (ret) {
> + dev_err(dev, "failed to assert pm reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_assert(&priv->core_rst);
> + if (ret) {
> + dev_err(dev, "failed to assert core reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_assert(&priv->mgmt_rst);
> + if (ret) {
> + dev_err(dev, "failed to assert mgmt reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_assert(&priv->mgmt_sticky_rst);
> + if (ret) {
> + dev_err(dev, "failed to assert mgmt-sticky reset (ret=%d)\n",
> + ret);
> + return ret;
> + }
> +
> + ret = reset_assert(&priv->pipe_rst);
> + if (ret) {
> + dev_err(dev, "failed to assert pipe reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + udelay(10);
> +
> + ret = reset_deassert(&priv->pm_rst);
> + if (ret) {
> + dev_err(dev, "failed to deassert pm reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_deassert(&priv->aclk_rst);
> + if (ret) {
> + dev_err(dev, "failed to deassert aclk reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_deassert(&priv->pclk_rst);
> + if (ret) {
> + dev_err(dev, "failed to deassert pclk reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + /* Select GEN1 for now */
> + cr = PCIE_CLIENT_GEN_SEL_1;
> + /* Set Root complex mode */
> + cr |= PCIE_CLIENT_CONF_ENABLE | PCIE_CLIENT_MODE_RC;
> + writel(cr, priv->apb_base + PCIE_CLIENT_CONFIG);
> +
> + ret = reset_deassert(&priv->mgmt_sticky_rst);
> + if (ret) {
> + dev_err(dev, "failed to deassert mgmt-sticky reset (ret=%d)\n",
> + ret);
> + return ret;
> + }
> +
> + ret = reset_deassert(&priv->core_rst);
> + if (ret) {
> + dev_err(dev, "failed to deassert core reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_deassert(&priv->mgmt_rst);
> + if (ret) {
> + dev_err(dev, "failed to deassert mgmt reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_deassert(&priv->pipe_rst);
> + if (ret) {
> + dev_err(dev, "failed to deassert pipe reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + /* Enable Gen1 training */
> + writel(PCIE_CLIENT_LINK_TRAIN_ENABLE,
> + priv->apb_base + PCIE_CLIENT_CONFIG);
> +
> + if (dm_gpio_is_valid(&priv->ep_gpio))
> + dm_gpio_set_value(&priv->ep_gpio, 1);
> +
> + ret = readl_poll_sleep_timeout
> + (priv->apb_base + PCIE_CLIENT_BASIC_STATUS1,
> + status, PCIE_LINK_UP(status), 20, 500 * 1000);
> + if (ret) {
> + dev_err(dev, "PCIe link training gen1 timeout!\n");
> + return ret;
> + }
> +
> + /* Initialize Root Complex registers. */
> + writel(PCIE_LM_VENDOR_ROCKCHIP, priv->apb_base + PCIE_LM_VENDOR_ID);
> + writel(PCI_CLASS_BRIDGE_PCI << 16,
> + priv->apb_base + PCIE_RC_BASE + PCI_CLASS_REVISION);
> + writel(PCIE_LM_RCBARPIE | PCIE_LM_RCBARPIS,
> + priv->apb_base + PCIE_LM_RCBAR);
> +
> + if (dev_read_bool(dev, "aspm-no-l0s")) {
> + val = readl(priv->apb_base + PCIE_RC_PCIE_LCAP);
> + val &= ~PCIE_RC_PCIE_LCAP_APMS_L0S;
> + writel(val, priv->apb_base + PCIE_RC_PCIE_LCAP);
> + }
> +
> + /* Configure Address Translation. */
> + ret = rockchip_pcie_atr_init(priv);
> + if (ret) {
> + dev_err(dev, "PCIE-%d: ATR init failed\n", dev->seq);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int rockchip_pcie_set_vpcie(struct udevice *dev)
> +{
> + struct rockchip_pcie *priv = dev_get_priv(dev);
> + int ret;
> +
> + if (!IS_ERR(priv->vpcie3v3)) {
> + ret = regulator_set_enable(priv->vpcie3v3, true);
> + if (ret) {
> + dev_err(dev, "failed to enable vpcie3v3 (ret=%d)\n",
> + ret);
> + return ret;
> + }
> + }
> +
> + ret = regulator_set_enable(priv->vpcie1v8, true);
> + if (ret) {
> + dev_err(dev, "failed to enable vpcie1v8 (ret=%d)\n", ret);
> + goto err_disable_3v3;
> + }
> +
> + ret = regulator_set_enable(priv->vpcie0v9, true);
> + if (ret) {
> + dev_err(dev, "failed to enable vpcie0v9 (ret=%d)\n", ret);
> + goto err_disable_1v8;
> + }
> +
> + return 0;
> +
> +err_disable_1v8:
> + regulator_set_enable(priv->vpcie1v8, false);
> +err_disable_3v3:
> + if (!IS_ERR(priv->vpcie3v3))
> + regulator_set_enable(priv->vpcie3v3, false);
> + return ret;
> +}
> +
> +static int rockchip_pcie_parse_dt(struct udevice *dev)
> +{
> + struct rockchip_pcie *priv = dev_get_priv(dev);
> + int ret;
> +
> + priv->axi_base = dev_read_addr_name(dev, "axi-base");
> + if (!priv->axi_base)
> + return -ENODEV;
> +
> + priv->apb_base = dev_read_addr_name(dev, "apb-base");
> + if (!priv->axi_base)
> + return -ENODEV;
> +
> + ret = gpio_request_by_name(dev, "ep-gpios", 0,
> + &priv->ep_gpio, GPIOD_IS_OUT);
> + if (ret) {
> + dev_err(dev, "failed to find ep-gpios property\n");
> + return ret;
> + }
> +
> + ret = reset_get_by_name(dev, "core", &priv->core_rst);
> + if (ret) {
> + dev_err(dev, "failed to get core reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_get_by_name(dev, "mgmt", &priv->mgmt_rst);
> + if (ret) {
> + dev_err(dev, "failed to get mgmt reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_get_by_name(dev, "mgmt-sticky", &priv->mgmt_sticky_rst);
> + if (ret) {
> + dev_err(dev, "failed to get mgmt-sticky reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_get_by_name(dev, "pipe", &priv->pipe_rst);
> + if (ret) {
> + dev_err(dev, "failed to get pipe reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_get_by_name(dev, "pm", &priv->pm_rst);
> + if (ret) {
> + dev_err(dev, "failed to get pm reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_get_by_name(dev, "pclk", &priv->pclk_rst);
> + if (ret) {
> + dev_err(dev, "failed to get pclk reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = reset_get_by_name(dev, "aclk", &priv->aclk_rst);
> + if (ret) {
> + dev_err(dev, "failed to get aclk reset (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = device_get_supply_regulator(dev, "vpcie3v3-supply",
> + &priv->vpcie3v3);
> + if (ret && ret != -ENOENT) {
> + dev_err(dev, "failed to get vpcie3v3 supply (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = device_get_supply_regulator(dev, "vpcie1v8-supply",
> + &priv->vpcie1v8);
> + if (ret) {
> + dev_err(dev, "failed to get vpcie1v8 supply (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + ret = device_get_supply_regulator(dev, "vpcie0v9-supply",
> + &priv->vpcie0v9);
> + if (ret) {
> + dev_err(dev, "failed to get vpcie0v9 supply (ret=%d)\n", ret);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int rockchip_pcie_probe(struct udevice *dev)
> +{
> + struct rockchip_pcie *priv = dev_get_priv(dev);
> + struct udevice *ctlr = pci_get_controller(dev);
> + struct pci_controller *hose = dev_get_uclass_priv(ctlr);
> + int ret;
> +
> + priv->first_busno = dev->seq;
> + priv->dev = dev;
> +
> + ret = rockchip_pcie_parse_dt(dev);
> + if (ret)
> + return ret;
> +
> + ret = rockchip_pcie_set_vpcie(dev);
> + if (ret)
> + return ret;
> +
> + ret = rockchip_pcie_init_port(dev);
> + if (ret)
> + return ret;
> +
> + dev_info(dev, "PCIE-%d: Link up (Bus%d)\n",
> + dev->seq, hose->first_busno);
> +
> + return 0;
> +}
> +
> +static const struct dm_pci_ops rockchip_pcie_ops = {
> + .read_config = rockchip_pcie_rd_conf,
> + .write_config = rockchip_pcie_wr_conf,
> +};
> +
> +static const struct udevice_id rockchip_pcie_ids[] = {
> + { .compatible = "rockchip,rk3399-pcie" },
> + { }
> +};
> +
> +U_BOOT_DRIVER(rockchip_pcie) = {
> + .name = "rockchip_pcie",
> + .id = UCLASS_PCI,
> + .of_match = rockchip_pcie_ids,
> + .ops = &rockchip_pcie_ops,
> + .probe = rockchip_pcie_probe,
> + .priv_auto_alloc_size = sizeof(struct rockchip_pcie),
> +};
> diff --git a/drivers/pci/pcie_rockchip.h b/drivers/pci/pcie_rockchip.h
> new file mode 100644
> index 0000000000..6ded5c9553
> --- /dev/null
> +++ b/drivers/pci/pcie_rockchip.h
> @@ -0,0 +1,79 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Rockchip PCIe Headers
> + *
> + * Copyright (c) 2016 Rockchip, Inc.
> + * Copyright (c) 2020 Amarula Solutions(India)
> + * Copyright (c) 2020 Jagan Teki <jagan@amarulasolutions.com>
> + * Copyright (c) 2019 Patrick Wildt <patrick@blueri.se>
> + *
> + */
> +
> +#define HIWORD_UPDATE(mask, val) (((mask) << 16) | (val))
> +#define HIWORD_UPDATE_BIT(val) HIWORD_UPDATE(val, val)
> +
> +#define ENCODE_LANES(x) ((((x) >> 1) & 3) << 4)
> +#define PCIE_CLIENT_BASE 0x0
> +#define PCIE_CLIENT_CONFIG (PCIE_CLIENT_BASE + 0x00)
> +#define PCIE_CLIENT_CONF_ENABLE HIWORD_UPDATE_BIT(0x0001)
> +#define PCIE_CLIENT_LINK_TRAIN_ENABLE HIWORD_UPDATE_BIT(0x0002)
> +#define PCIE_CLIENT_MODE_RC HIWORD_UPDATE_BIT(0x0040)
> +#define PCIE_CLIENT_GEN_SEL_1 HIWORD_UPDATE(0x0080, 0)
> +#define PCIE_CLIENT_BASIC_STATUS1 0x0048
> +#define PCIE_CLIENT_LINK_STATUS_UP GENMASK(21, 20)
> +#define PCIE_CLIENT_LINK_STATUS_MASK GENMASK(21, 20)
> +#define PCIE_LINK_UP(x) \
> + (((x) & PCIE_CLIENT_LINK_STATUS_MASK) == PCIE_CLIENT_LINK_STATUS_UP)
> +#define PCIE_RC_NORMAL_BASE 0x800000
> +#define PCIE_LM_BASE 0x900000
> +#define PCIE_LM_VENDOR_ID (PCIE_LM_BASE + 0x44)
> +#define PCIE_LM_VENDOR_ROCKCHIP 0x1d87
> +#define PCIE_LM_RCBAR (PCIE_LM_BASE + 0x300)
> +#define PCIE_LM_RCBARPIE BIT(19)
> +#define PCIE_LM_RCBARPIS BIT(20)
> +#define PCIE_RC_BASE 0xa00000
> +#define PCIE_RC_CONFIG_DCR (PCIE_RC_BASE + 0x0c4)
> +#define PCIE_RC_CONFIG_DCR_CSPL_SHIFT 18
> +#define PCIE_RC_CONFIG_DCR_CPLS_SHIFT 26
> +#define PCIE_RC_PCIE_LCAP (PCIE_RC_BASE + 0x0cc)
> +#define PCIE_RC_PCIE_LCAP_APMS_L0S BIT(10)
> +#define PCIE_ATR_BASE 0xc00000
> +#define PCIE_ATR_OB_ADDR0(i) (PCIE_ATR_BASE + 0x000 + (i) * 0x20)
> +#define PCIE_ATR_OB_ADDR1(i) (PCIE_ATR_BASE + 0x004 + (i) * 0x20)
> +#define PCIE_ATR_OB_DESC0(i) (PCIE_ATR_BASE + 0x008 + (i) * 0x20)
> +#define PCIE_ATR_OB_DESC1(i) (PCIE_ATR_BASE + 0x00c + (i) * 0x20)
> +#define PCIE_ATR_IB_ADDR0(i) (PCIE_ATR_BASE + 0x800 + (i) * 0x8)
> +#define PCIE_ATR_IB_ADDR1(i) (PCIE_ATR_BASE + 0x804 + (i) * 0x8)
> +#define PCIE_ATR_HDR_MEM 0x2
> +#define PCIE_ATR_HDR_IO 0x6
> +#define PCIE_ATR_HDR_CFG_TYPE0 0xa
> +#define PCIE_ATR_HDR_CFG_TYPE1 0xb
> +#define PCIE_ATR_HDR_RID BIT(23)
> +
> +#define PCIE_ATR_OB_REGION0_SIZE (32 * 1024 * 1024)
> +#define PCIE_ATR_OB_REGION_SIZE (1 * 1024 * 1024)
> +
> +struct rockchip_pcie {
> + fdt_addr_t axi_base;
> + fdt_addr_t apb_base;
> + int first_busno;
> + struct udevice *dev;
> +
> + /* resets */
> + struct reset_ctl core_rst;
> + struct reset_ctl mgmt_rst;
> + struct reset_ctl mgmt_sticky_rst;
> + struct reset_ctl pipe_rst;
> + struct reset_ctl pm_rst;
> + struct reset_ctl pclk_rst;
> + struct reset_ctl aclk_rst;
> +
> + /* gpio */
> + struct gpio_desc ep_gpio;
> +
> + /* vpcie regulators */
> + struct udevice *vpcie12v;
> + struct udevice *vpcie3v3;
> + struct udevice *vpcie1v8;
> + struct udevice *vpcie0v9;
> +};