lx2-rev1 requires layerscape_gen4 device tree fixup and lx2-rev2 requires layerscape device tree fixup. Add device tree fixup for lx2 based on SoC and Version.
Signed-off-by: Wasim Khan wasim.khan@nxp.com ---
Changes in v2: Updated patch description based on Priyanka Jain review comments
drivers/pci/pcie_layerscape_fixup.c | 1 + drivers/pci/pcie_layerscape_fixup_common.c | 76 ++++++++++++++++++++++++++++++ drivers/pci/pcie_layerscape_fixup_common.h | 1 + 3 files changed, 78 insertions(+)
diff --git a/drivers/pci/pcie_layerscape_fixup.c b/drivers/pci/pcie_layerscape_fixup.c index b1d2470..df76048 100644 --- a/drivers/pci/pcie_layerscape_fixup.c +++ b/drivers/pci/pcie_layerscape_fixup.c @@ -208,6 +208,7 @@ static void fdt_fixup_pcie_ls(void *blob) fdt_pcie_set_iommu_map_entry_ls(blob, pcie, bdf >> 8, streamid); } + pcie_board_fix_fdt(blob); } #endif
diff --git a/drivers/pci/pcie_layerscape_fixup_common.c b/drivers/pci/pcie_layerscape_fixup_common.c index 3458ae8..ff8cd1f 100644 --- a/drivers/pci/pcie_layerscape_fixup_common.c +++ b/drivers/pci/pcie_layerscape_fixup_common.c @@ -29,6 +29,82 @@ void ft_pci_setup(void *blob, bd_t *bd) }
#if defined(CONFIG_FSL_LAYERSCAPE) +int lx2_board_fix_fdt(void *fdt) +{ + char *reg_name, *old_str, *new_str; + const char *reg_names; + int names_len, old_str_len, new_str_len, remaining_str_len; + struct str_map { + char *old_str; + char *new_str; + } reg_names_map[] = { + { "csr_axi_slave", "regs" }, + { "config_axi_slave", "config" } + }; + int off = -1, i; + u32 val; + + off = fdt_node_offset_by_compatible(fdt, -1, "fsl,lx2160a-pcie"); + while (off != -FDT_ERR_NOTFOUND) { + fdt_setprop(fdt, off, "compatible", "fsl,ls2088a-pcie", + strlen("fsl,ls2088a-pcie") + 1); + + reg_names = fdt_getprop(fdt, off, "reg-names", &names_len); + if (!reg_names) + continue; + reg_name = (char *)reg_names; + remaining_str_len = names_len - (reg_name - reg_names); + i = 0; + while ((i < ARRAY_SIZE(reg_names_map)) && remaining_str_len) { + old_str = reg_names_map[i].old_str; + new_str = reg_names_map[i].new_str; + old_str_len = strlen(old_str); + new_str_len = strlen(new_str); + if (memcmp(reg_name, old_str, old_str_len) == 0) { + /* first only leave required bytes for new_str + * and copy rest of the string after it + */ + memcpy(reg_name + new_str_len, + reg_name + old_str_len, + remaining_str_len - old_str_len); + + /* Now copy new_str */ + memcpy(reg_name, new_str, new_str_len); + names_len -= old_str_len; + names_len += new_str_len; + i++; + } + + reg_name = memchr(reg_name, '\0', remaining_str_len); + if (!reg_name) + break; + reg_name += 1; + + remaining_str_len = names_len - (reg_name - reg_names); + } + fdt_setprop(fdt, off, "reg-names", reg_names, names_len); + fdt_delprop(fdt, off, "apio-wins"); + fdt_delprop(fdt, off, "ppio-wins"); + val = cpu_to_fdt32(0x4); + fdt_setprop(fdt, off, "num-lanes", &val, sizeof(val)); + off = fdt_node_offset_by_compatible(fdt, off, + "fsl,lx2160a-pcie"); + } + return 0; +} + +int pcie_board_fix_fdt(void *fdt) +{ + uint svr; + + svr = SVR_SOC_VER(get_svr()); + + if (svr == SVR_LX2160A && IS_SVR_REV(get_svr(), 2, 0)) + return lx2_board_fix_fdt(fdt); + + return 0; +} + #ifdef CONFIG_ARCH_LX2160A /* returns the next available streamid for pcie, -errno if failed */ int pcie_next_streamid(int currentid, int idx) diff --git a/drivers/pci/pcie_layerscape_fixup_common.h b/drivers/pci/pcie_layerscape_fixup_common.h index e747396..8d95690 100644 --- a/drivers/pci/pcie_layerscape_fixup_common.h +++ b/drivers/pci/pcie_layerscape_fixup_common.h @@ -23,5 +23,6 @@ static void ft_pci_setup_ls_gen4(void *blob, bd_t *bd) #endif #endif /* CONFIG_FSL_LAYERSCAPE */ int pcie_next_streamid(int currentid, int id); +int pcie_board_fix_fdt(void *fdt);
#endif //_PCIE_LAYERSCAPE_FIXUP_COMMON_H_