dm: pci: add Freescale PowerPC PCIe driver
Add PCIe DM driver for Freescale PowerPC PCIe controllers.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 429bb83..3fe38f7 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -60,6 +60,14 @@
Armada-8K SoCs. The PCIe controller on Armada-8K is based on
DesignWare hardware.
+config PCIE_FSL
+ bool "FSL PowerPC PCIe support"
+ depends on DM_PCI
+ help
+ Say Y here if you want to enable PCIe controller support on FSL
+ PowerPC MPC85xx, MPC86xx, B series, P series and T series SoCs.
+ This driver does not support SRIO_PCIE_BOOT feature.
+
config PCI_RCAR_GEN2
bool "Renesas RCar Gen2 PCIe driver"
depends on DM_PCI
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index bd392ed..b5ebd50 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -31,6 +31,7 @@
obj-$(CONFIG_PCI_TEGRA) += pci_tegra.o
obj-$(CONFIG_PCI_AARDVARK) += pci-aardvark.o
obj-$(CONFIG_PCIE_DW_MVEBU) += pcie_dw_mvebu.o
+obj-$(CONFIG_PCIE_FSL) += pcie_fsl.o pcie_fsl_fixup.o
obj-$(CONFIG_PCIE_LAYERSCAPE) += pcie_layerscape.o
obj-$(CONFIG_PCIE_LAYERSCAPE) += pcie_layerscape_fixup.o
obj-$(CONFIG_PCIE_LAYERSCAPE_GEN4) += pcie_layerscape_gen4.o \
diff --git a/drivers/pci/pcie_fsl.c b/drivers/pci/pcie_fsl.c
new file mode 100644
index 0000000..4d61a46
--- /dev/null
+++ b/drivers/pci/pcie_fsl.c
@@ -0,0 +1,610 @@
+// SPDX-License-Identifier: GPL-2.0+ OR X11
+/*
+ * Copyright 2019 NXP
+ *
+ * PCIe DM U-Boot driver for Freescale PowerPC SoCs
+ * Author: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <malloc.h>
+#include <mapmem.h>
+#include <pci.h>
+#include <asm/fsl_pci.h>
+#include <asm/fsl_serdes.h>
+#include <asm/io.h>
+#include "pcie_fsl.h"
+
+LIST_HEAD(fsl_pcie_list);
+
+static int fsl_pcie_link_up(struct fsl_pcie *pcie);
+
+static int fsl_pcie_addr_valid(struct fsl_pcie *pcie, pci_dev_t bdf)
+{
+ struct udevice *bus = pcie->bus;
+
+ if (!pcie->enabled)
+ return -ENXIO;
+
+ if (PCI_BUS(bdf) < bus->seq)
+ return -EINVAL;
+
+ if (PCI_BUS(bdf) > bus->seq && (!fsl_pcie_link_up(pcie) || pcie->mode))
+ return -EINVAL;
+
+ if (PCI_BUS(bdf) == bus->seq && (PCI_DEV(bdf) > 0 || PCI_FUNC(bdf) > 0))
+ return -EINVAL;
+
+ if (PCI_BUS(bdf) == (bus->seq + 1) && (PCI_DEV(bdf) > 0))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int fsl_pcie_read_config(struct udevice *bus, pci_dev_t bdf,
+ uint offset, ulong *valuep,
+ enum pci_size_t size)
+{
+ struct fsl_pcie *pcie = dev_get_priv(bus);
+ ccsr_fsl_pci_t *regs = pcie->regs;
+ u32 val;
+
+ if (fsl_pcie_addr_valid(pcie, bdf)) {
+ *valuep = pci_get_ff(size);
+ return 0;
+ }
+
+ bdf = bdf - PCI_BDF(bus->seq, 0, 0);
+ val = bdf | (offset & 0xfc) | ((offset & 0xf00) << 16) | 0x80000000;
+ out_be32(®s->cfg_addr, val);
+
+ sync();
+
+ switch (size) {
+ case PCI_SIZE_8:
+ *valuep = in_8((u8 *)®s->cfg_data + (offset & 3));
+ break;
+ case PCI_SIZE_16:
+ *valuep = in_le16((u16 *)((u8 *)®s->cfg_data +
+ (offset & 2)));
+ break;
+ case PCI_SIZE_32:
+ *valuep = in_le32(®s->cfg_data);
+ break;
+ }
+
+ return 0;
+}
+
+static int fsl_pcie_write_config(struct udevice *bus, pci_dev_t bdf,
+ uint offset, ulong value,
+ enum pci_size_t size)
+{
+ struct fsl_pcie *pcie = dev_get_priv(bus);
+ ccsr_fsl_pci_t *regs = pcie->regs;
+ u32 val;
+ u8 val_8;
+ u16 val_16;
+ u32 val_32;
+
+ if (fsl_pcie_addr_valid(pcie, bdf))
+ return 0;
+
+ bdf = bdf - PCI_BDF(bus->seq, 0, 0);
+ val = bdf | (offset & 0xfc) | ((offset & 0xf00) << 16) | 0x80000000;
+ out_be32(®s->cfg_addr, val);
+
+ sync();
+
+ switch (size) {
+ case PCI_SIZE_8:
+ val_8 = value;
+ out_8((u8 *)®s->cfg_data + (offset & 3), val_8);
+ break;
+ case PCI_SIZE_16:
+ val_16 = value;
+ out_le16((u16 *)((u8 *)®s->cfg_data + (offset & 2)), val_16);
+ break;
+ case PCI_SIZE_32:
+ val_32 = value;
+ out_le32(®s->cfg_data, val_32);
+ break;
+ }
+
+ return 0;
+}
+
+static int fsl_pcie_hose_read_config(struct fsl_pcie *pcie, uint offset,
+ ulong *valuep, enum pci_size_t size)
+{
+ int ret;
+ struct udevice *bus = pcie->bus;
+
+ ret = fsl_pcie_read_config(bus, PCI_BDF(bus->seq, 0, 0),
+ offset, valuep, size);
+
+ return ret;
+}
+
+static int fsl_pcie_hose_write_config(struct fsl_pcie *pcie, uint offset,
+ ulong value, enum pci_size_t size)
+{
+ struct udevice *bus = pcie->bus;
+
+ return fsl_pcie_write_config(bus, PCI_BDF(bus->seq, 0, 0),
+ offset, value, size);
+}
+
+static int fsl_pcie_hose_read_config_byte(struct fsl_pcie *pcie, uint offset,
+ u8 *valuep)
+{
+ ulong val;
+ int ret;
+
+ ret = fsl_pcie_hose_read_config(pcie, offset, &val, PCI_SIZE_8);
+ *valuep = val;
+
+ return ret;
+}
+
+static int fsl_pcie_hose_read_config_word(struct fsl_pcie *pcie, uint offset,
+ u16 *valuep)
+{
+ ulong val;
+ int ret;
+
+ ret = fsl_pcie_hose_read_config(pcie, offset, &val, PCI_SIZE_16);
+ *valuep = val;
+
+ return ret;
+}
+
+static int fsl_pcie_hose_read_config_dword(struct fsl_pcie *pcie, uint offset,
+ u32 *valuep)
+{
+ ulong val;
+ int ret;
+
+ ret = fsl_pcie_hose_read_config(pcie, offset, &val, PCI_SIZE_32);
+ *valuep = val;
+
+ return ret;
+}
+
+static int fsl_pcie_hose_write_config_byte(struct fsl_pcie *pcie, uint offset,
+ u8 value)
+{
+ return fsl_pcie_hose_write_config(pcie, offset, value, PCI_SIZE_8);
+}
+
+static int fsl_pcie_hose_write_config_word(struct fsl_pcie *pcie, uint offset,
+ u16 value)
+{
+ return fsl_pcie_hose_write_config(pcie, offset, value, PCI_SIZE_16);
+}
+
+static int fsl_pcie_hose_write_config_dword(struct fsl_pcie *pcie, uint offset,
+ u32 value)
+{
+ return fsl_pcie_hose_write_config(pcie, offset, value, PCI_SIZE_32);
+}
+
+static int fsl_pcie_link_up(struct fsl_pcie *pcie)
+{
+ ccsr_fsl_pci_t *regs = pcie->regs;
+ u16 ltssm;
+
+ if (pcie->block_rev >= PEX_IP_BLK_REV_3_0) {
+ ltssm = (in_be32(®s->pex_csr0)
+ & PEX_CSR0_LTSSM_MASK) >> PEX_CSR0_LTSSM_SHIFT;
+ return ltssm == LTSSM_L0_REV3;
+ }
+
+ fsl_pcie_hose_read_config_word(pcie, PCI_LTSSM, <ssm);
+
+ return ltssm == LTSSM_L0;
+}
+
+static bool fsl_pcie_is_agent(struct fsl_pcie *pcie)
+{
+ u8 header_type;
+
+ fsl_pcie_hose_read_config_byte(pcie, PCI_HEADER_TYPE, &header_type);
+
+ return (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL;
+}
+
+static int fsl_pcie_setup_law(struct fsl_pcie *pcie)
+{
+ struct pci_region *io, *mem, *pref;
+
+ pci_get_regions(pcie->bus, &io, &mem, &pref);
+
+ if (mem)
+ set_next_law(mem->phys_start,
+ law_size_bits(mem->size),
+ pcie->law_trgt_if);
+
+ if (io)
+ set_next_law(io->phys_start,
+ law_size_bits(io->size),
+ pcie->law_trgt_if);
+
+ return 0;
+}
+
+static void fsl_pcie_config_ready(struct fsl_pcie *pcie)
+{
+ ccsr_fsl_pci_t *regs = pcie->regs;
+
+ if (pcie->block_rev >= PEX_IP_BLK_REV_3_0) {
+ setbits_be32(®s->config, FSL_PCIE_V3_CFG_RDY);
+ return;
+ }
+
+ fsl_pcie_hose_write_config_byte(pcie, FSL_PCIE_CFG_RDY, 0x1);
+}
+
+static int fsl_pcie_setup_outbound_win(struct fsl_pcie *pcie, int idx,
+ int type, u64 phys, u64 bus_addr,
+ pci_size_t size)
+{
+ ccsr_fsl_pci_t *regs = pcie->regs;
+ pot_t *po = ®s->pot[idx];
+ u32 war, sz;
+
+ if (idx < 0)
+ return -EINVAL;
+
+ out_be32(&po->powbar, phys >> 12);
+ out_be32(&po->potar, bus_addr >> 12);
+#ifdef CONFIG_SYS_PCI_64BIT
+ out_be32(&po->potear, bus_addr >> 44);
+#else
+ out_be32(&po->potear, 0);
+#endif
+
+ sz = (__ilog2_u64((u64)size) - 1);
+ war = POWAR_EN | sz;
+
+ if (type == PCI_REGION_IO)
+ war |= POWAR_IO_READ | POWAR_IO_WRITE;
+ else
+ war |= POWAR_MEM_READ | POWAR_MEM_WRITE;
+
+ out_be32(&po->powar, war);
+
+ return 0;
+}
+
+static int fsl_pcie_setup_inbound_win(struct fsl_pcie *pcie, int idx,
+ bool pf, u64 phys, u64 bus_addr,
+ pci_size_t size)
+{
+ ccsr_fsl_pci_t *regs = pcie->regs;
+ pit_t *pi = ®s->pit[idx];
+ u32 sz = (__ilog2_u64(size) - 1);
+ u32 flag = PIWAR_LOCAL;
+
+ if (idx < 0)
+ return -EINVAL;
+
+ out_be32(&pi->pitar, phys >> 12);
+ out_be32(&pi->piwbar, bus_addr >> 12);
+
+#ifdef CONFIG_SYS_PCI_64BIT
+ out_be32(&pi->piwbear, bus_addr >> 44);
+#else
+ out_be32(&pi->piwbear, 0);
+#endif
+
+ if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_A005434))
+ flag = 0;
+
+ flag |= PIWAR_EN | PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
+ if (pf)
+ flag |= PIWAR_PF;
+ out_be32(&pi->piwar, flag | sz);
+
+ return 0;
+}
+
+static int fsl_pcie_setup_outbound_wins(struct fsl_pcie *pcie)
+{
+ struct pci_region *io, *mem, *pref;
+ int idx = 1; /* skip 0 */
+
+ pci_get_regions(pcie->bus, &io, &mem, &pref);
+
+ if (io)
+ /* ATU : OUTBOUND : IO */
+ fsl_pcie_setup_outbound_win(pcie, idx++,
+ PCI_REGION_IO,
+ io->phys_start,
+ io->bus_start,
+ io->size);
+
+ if (mem)
+ /* ATU : OUTBOUND : MEM */
+ fsl_pcie_setup_outbound_win(pcie, idx++,
+ PCI_REGION_MEM,
+ mem->phys_start,
+ mem->bus_start,
+ mem->size);
+ return 0;
+}
+
+static int fsl_pcie_setup_inbound_wins(struct fsl_pcie *pcie)
+{
+ phys_addr_t phys_start = CONFIG_SYS_PCI_MEMORY_PHYS;
+ pci_addr_t bus_start = CONFIG_SYS_PCI_MEMORY_BUS;
+ u64 sz = min((u64)gd->ram_size, (1ull << 32));
+ pci_size_t pci_sz;
+ int idx;
+
+ if (pcie->block_rev >= PEX_IP_BLK_REV_2_2)
+ idx = 2;
+ else
+ idx = 3;
+
+ pci_sz = 1ull << __ilog2_u64(sz);
+
+ dev_dbg(pcie->bus, "R0 bus_start: %llx phys_start: %llx size: %llx\n",
+ (u64)bus_start, (u64)phys_start, (u64)sz);
+
+ /* if we aren't an exact power of two match, pci_sz is smaller
+ * round it up to the next power of two. We report the actual
+ * size to pci region tracking.
+ */
+ if (pci_sz != sz)
+ sz = 2ull << __ilog2_u64(sz);
+
+ fsl_pcie_setup_inbound_win(pcie, idx--, true,
+ CONFIG_SYS_PCI_MEMORY_PHYS,
+ CONFIG_SYS_PCI_MEMORY_BUS, sz);
+#if defined(CONFIG_PHYS_64BIT) && defined(CONFIG_SYS_PCI_64BIT)
+ /*
+ * On 64-bit capable systems, set up a mapping for all of DRAM
+ * in high pci address space.
+ */
+ pci_sz = 1ull << __ilog2_u64(gd->ram_size);
+ /* round up to the next largest power of two */
+ if (gd->ram_size > pci_sz)
+ pci_sz = 1ull << (__ilog2_u64(gd->ram_size) + 1);
+
+ dev_dbg(pcie->bus, "R64 bus_start: %llx phys_start: %llx size: %llx\n",
+ (u64)CONFIG_SYS_PCI64_MEMORY_BUS,
+ (u64)CONFIG_SYS_PCI_MEMORY_PHYS, (u64)pci_sz);
+
+ fsl_pcie_setup_inbound_win(pcie, idx--, true,
+ CONFIG_SYS_PCI_MEMORY_PHYS,
+ CONFIG_SYS_PCI64_MEMORY_BUS, pci_sz);
+#endif
+
+ return 0;
+}
+
+static int fsl_pcie_init_atmu(struct fsl_pcie *pcie)
+{
+ fsl_pcie_setup_outbound_wins(pcie);
+ fsl_pcie_setup_inbound_wins(pcie);
+
+ return 0;
+}
+
+static int fsl_pcie_init_port(struct fsl_pcie *pcie)
+{
+ ccsr_fsl_pci_t *regs = pcie->regs;
+ u32 val_32;
+ u16 val_16;
+
+ fsl_pcie_init_atmu(pcie);
+
+ if (IS_ENABLED(CONFIG_FSL_PCIE_DISABLE_ASPM)) {
+ val_32 = 0;
+ fsl_pcie_hose_read_config_dword(pcie, PCI_LCR, &val_32);
+ val_32 &= ~0x03;
+ fsl_pcie_hose_write_config_dword(pcie, PCI_LCR, val_32);
+ udelay(1);
+ }
+
+ if (IS_ENABLED(CONFIG_FSL_PCIE_RESET)) {
+ u16 ltssm;
+ int i;
+
+ if (pcie->block_rev >= PEX_IP_BLK_REV_3_0) {
+ /* assert PCIe reset */
+ setbits_be32(®s->pdb_stat, 0x08000000);
+ (void)in_be32(®s->pdb_stat);
+ udelay(1000);
+ /* clear PCIe reset */
+ clrbits_be32(®s->pdb_stat, 0x08000000);
+ asm("sync;isync");
+ for (i = 0; i < 100 && !fsl_pcie_link_up(pcie); i++)
+ udelay(1000);
+ } else {
+ fsl_pcie_hose_read_config_word(pcie, PCI_LTSSM, <ssm);
+ if (ltssm == 1) {
+ /* assert PCIe reset */
+ setbits_be32(®s->pdb_stat, 0x08000000);
+ (void)in_be32(®s->pdb_stat);
+ udelay(100);
+ /* clear PCIe reset */
+ clrbits_be32(®s->pdb_stat, 0x08000000);
+ asm("sync;isync");
+ for (i = 0; i < 100 &&
+ !fsl_pcie_link_up(pcie); i++)
+ udelay(1000);
+ }
+ }
+ }
+
+ if (IS_ENABLED(CONFIG_SYS_P4080_ERRATUM_PCIE_A003) &&
+ !fsl_pcie_link_up(pcie)) {
+ serdes_corenet_t *srds_regs;
+
+ srds_regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
+ val_32 = in_be32(&srds_regs->srdspccr0);
+
+ if ((val_32 >> 28) == 3) {
+ int i;
+
+ out_be32(&srds_regs->srdspccr0, 2 << 28);
+ setbits_be32(®s->pdb_stat, 0x08000000);
+ in_be32(®s->pdb_stat);
+ udelay(100);
+ clrbits_be32(®s->pdb_stat, 0x08000000);
+ asm("sync;isync");
+ for (i = 0; i < 100 && !fsl_pcie_link_up(pcie); i++)
+ udelay(1000);
+ }
+ }
+
+ /*
+ * The Read-Only Write Enable bit defaults to 1 instead of 0.
+ * Set to 0 to protect the read-only registers.
+ */
+ if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_A007815))
+ clrbits_be32(®s->dbi_ro_wr_en, 0x01);
+
+ /*
+ * Enable All Error Interrupts except
+ * - Master abort (pci)
+ * - Master PERR (pci)
+ * - ICCA (PCIe)
+ */
+ out_be32(®s->peer, ~0x20140);
+
+ /* set URR, FER, NFER (but not CER) */
+ fsl_pcie_hose_read_config_dword(pcie, PCI_DCR, &val_32);
+ val_32 |= 0xf000e;
+ fsl_pcie_hose_write_config_dword(pcie, PCI_DCR, val_32);
+
+ /* Clear all error indications */
+ out_be32(®s->pme_msg_det, 0xffffffff);
+ out_be32(®s->pme_msg_int_en, 0xffffffff);
+ out_be32(®s->pedr, 0xffffffff);
+
+ fsl_pcie_hose_read_config_word(pcie, PCI_DSR, &val_16);
+ if (val_16)
+ fsl_pcie_hose_write_config_word(pcie, PCI_DSR, 0xffff);
+
+ fsl_pcie_hose_read_config_word(pcie, PCI_SEC_STATUS, &val_16);
+ if (val_16)
+ fsl_pcie_hose_write_config_word(pcie, PCI_SEC_STATUS, 0xffff);
+
+ return 0;
+}
+
+static int fsl_pcie_fixup_classcode(struct fsl_pcie *pcie)
+{
+ ccsr_fsl_pci_t *regs = pcie->regs;
+ u32 val;
+
+ setbits_be32(®s->dbi_ro_wr_en, 0x01);
+ fsl_pcie_hose_read_config_dword(pcie, PCI_CLASS_REVISION, &val);
+ val &= 0xff;
+ val |= PCI_CLASS_BRIDGE_PCI << 16;
+ fsl_pcie_hose_write_config_dword(pcie, PCI_CLASS_REVISION, val);
+ clrbits_be32(®s->dbi_ro_wr_en, 0x01);
+
+ return 0;
+}
+
+static int fsl_pcie_init_rc(struct fsl_pcie *pcie)
+{
+ return fsl_pcie_fixup_classcode(pcie);
+}
+
+static int fsl_pcie_init_ep(struct fsl_pcie *pcie)
+{
+ fsl_pcie_config_ready(pcie);
+
+ return 0;
+}
+
+static int fsl_pcie_probe(struct udevice *dev)
+{
+ struct fsl_pcie *pcie = dev_get_priv(dev);
+ ccsr_fsl_pci_t *regs = pcie->regs;
+ u16 val_16;
+
+ pcie->bus = dev;
+ pcie->block_rev = in_be32(®s->block_rev1);
+
+ list_add(&pcie->list, &fsl_pcie_list);
+ pcie->enabled = is_serdes_configured(PCIE1 + pcie->idx);
+ if (!pcie->enabled) {
+ printf("PCIe%d: %s disabled\n", pcie->idx, dev->name);
+ return 0;
+ }
+
+ fsl_pcie_setup_law(pcie);
+
+ pcie->mode = fsl_pcie_is_agent(pcie);
+
+ fsl_pcie_init_port(pcie);
+
+ printf("PCIe%d: %s ", pcie->idx, dev->name);
+
+ if (pcie->mode) {
+ printf("Endpoint");
+ fsl_pcie_init_ep(pcie);
+ } else {
+ printf("Root Complex");
+ fsl_pcie_init_rc(pcie);
+ }
+
+ if (!fsl_pcie_link_up(pcie)) {
+ printf(": %s\n", pcie->mode ? "undetermined link" : "no link");
+ return 0;
+ }
+
+ fsl_pcie_hose_read_config_word(pcie, PCI_LSR, &val_16);
+ printf(": x%d gen%d\n", (val_16 & 0x3f0) >> 4, (val_16 & 0xf));
+
+ return 0;
+}
+
+static int fsl_pcie_ofdata_to_platdata(struct udevice *dev)
+{
+ struct fsl_pcie *pcie = dev_get_priv(dev);
+ int ret;
+
+ pcie->regs = dev_remap_addr(dev);
+ if (!pcie->regs) {
+ pr_err("\"reg\" resource not found\n");
+ return -EINVAL;
+ }
+
+ ret = dev_read_u32(dev, "law_trgt_if", &pcie->law_trgt_if);
+ if (ret < 0) {
+ pr_err("\"law_trgt_if\" not found\n");
+ return ret;
+ }
+
+ pcie->idx = (dev_read_addr(dev) - 0xffe240000) / 0x10000;
+
+ return 0;
+}
+
+static const struct dm_pci_ops fsl_pcie_ops = {
+ .read_config = fsl_pcie_read_config,
+ .write_config = fsl_pcie_write_config,
+};
+
+static const struct udevice_id fsl_pcie_ids[] = {
+ { .compatible = "fsl,pcie-t2080" },
+ { }
+};
+
+U_BOOT_DRIVER(fsl_pcie) = {
+ .name = "fsl_pcie",
+ .id = UCLASS_PCI,
+ .of_match = fsl_pcie_ids,
+ .ops = &fsl_pcie_ops,
+ .ofdata_to_platdata = fsl_pcie_ofdata_to_platdata,
+ .probe = fsl_pcie_probe,
+ .priv_auto_alloc_size = sizeof(struct fsl_pcie),
+};
diff --git a/drivers/pci/pcie_fsl.h b/drivers/pci/pcie_fsl.h
new file mode 100644
index 0000000..5eefc31
--- /dev/null
+++ b/drivers/pci/pcie_fsl.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2019 NXP
+ *
+ * PCIe DM U-Boot driver for Freescale PowerPC SoCs
+ * Author: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
+ */
+
+#ifndef _PCIE_FSL_H_
+#define _PCIE_FSL_H_
+
+#ifdef CONFIG_SYS_FSL_PCI_VER_3_X
+#define FSL_PCIE_CAP_ID 0x70
+#else
+#define FSL_PCIE_CAP_ID 0x4c
+#endif
+/* PCIe Device Control Register */
+#define PCI_DCR (FSL_PCIE_CAP_ID + 0x08)
+/* PCIe Device Status Register */
+#define PCI_DSR (FSL_PCIE_CAP_ID + 0x0a)
+/* PCIe Link Control Register */
+#define PCI_LCR (FSL_PCIE_CAP_ID + 0x10)
+/* PCIe Link Status Register */
+#define PCI_LSR (FSL_PCIE_CAP_ID + 0x12)
+
+#ifndef CONFIG_SYS_PCI_MEMORY_BUS
+#define CONFIG_SYS_PCI_MEMORY_BUS 0
+#endif
+
+#ifndef CONFIG_SYS_PCI_MEMORY_PHYS
+#define CONFIG_SYS_PCI_MEMORY_PHYS 0
+#endif
+
+#if defined(CONFIG_SYS_PCI_64BIT) && !defined(CONFIG_SYS_PCI64_MEMORY_BUS)
+#define CONFIG_SYS_PCI64_MEMORY_BUS (64ull * 1024 * 1024 * 1024)
+#endif
+
+#define PEX_CSR0_LTSSM_MASK 0xFC
+#define PEX_CSR0_LTSSM_SHIFT 2
+#define LTSSM_L0_REV3 0x11
+#define LTSSM_L0 0x16
+
+struct fsl_pcie {
+ int idx;
+ struct udevice *bus;
+ void __iomem *regs;
+ u32 law_trgt_if; /* LAW target ID */
+ u32 block_rev; /* IP block revision */
+ bool mode; /* RC&EP mode flag */
+ bool enabled; /* Enable status */
+ struct list_head list;
+};
+
+extern struct list_head fsl_pcie_list;
+
+#endif /* _PCIE_FSL_H_ */
diff --git a/drivers/pci/pcie_fsl_fixup.c b/drivers/pci/pcie_fsl_fixup.c
new file mode 100644
index 0000000..cbdc0ef
--- /dev/null
+++ b/drivers/pci/pcie_fsl_fixup.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0+ OR X11
+/*
+ * Copyright 2019 NXP
+ *
+ * PCIe Kernel DT fixup of DM U-Boot driver for Freescale PowerPC SoCs
+ * Author: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
+ */
+
+#include <common.h>
+#ifdef CONFIG_OF_BOARD_SETUP
+#include <dm.h>
+#include <fdt_support.h>
+#include <asm/fsl_pci.h>
+#include <linux/libfdt.h>
+#include "pcie_fsl.h"
+
+static void ft_fsl_pcie_setup(void *blob, struct fsl_pcie *pcie)
+{
+ struct pci_controller *hose = dev_get_uclass_priv(pcie->bus);
+ fdt_addr_t regs_addr;
+ int off;
+
+ regs_addr = dev_read_addr(pcie->bus);
+ off = fdt_node_offset_by_compat_reg(blob, FSL_PCIE_COMPAT, regs_addr);
+ if (off < 0) {
+ printf("%s: Fail to find PCIe node@0x%pa\n",
+ FSL_PCIE_COMPAT, ®s_addr);
+ return;
+ }
+
+ if (!hose || !pcie->enabled)
+ fdt_del_node(blob, off);
+ else
+ fdt_pci_dma_ranges(blob, off, hose);
+}
+
+/* Fixup Kernel DT for PCIe */
+void pci_of_setup(void *blob, bd_t *bd)
+{
+ struct fsl_pcie *pcie;
+
+ list_for_each_entry(pcie, &fsl_pcie_list, list)
+ ft_fsl_pcie_setup(blob, pcie);
+}
+
+#else
+void pci_of_setup(void *blob, bd_t *bd)
+{
+}
+#endif