lx2160a rev1 requires layerscape_gen4 device tree fixup and
lx2160a rev2 requires layerscape device tree fixup.
Add device tree fixup for lx2160a based on SoC and Version.
Signed-off-by: Wasim Khan <wasim.k...@nxp.com>
---
Changes in v3:
Updated patch subject and description based on Priyanka Jain
review comments
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_
--
2.7.4
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