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pci: layerscape: device tree fixup based on SoC and

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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.khan@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This commit is contained in:
Wasim Khan 2020-01-06 12:06:00 +00:00 committed by Priyanka Jain
parent d20eb7a6db
commit 9c2969e92c
3 changed files with 75 additions and 0 deletions
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1
drivers/pci/pcie_layerscape_fixup.c
View File

@ -207,6 +207,7 @@ 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

73
drivers/pci/pcie_layerscape_fixup_common.c
View File

@ -27,6 +27,79 @@ 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;
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");
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)

1
drivers/pci/pcie_layerscape_fixup_common.h
View File

@ -17,5 +17,6 @@ void ft_pci_setup_ls(void *blob, bd_t *bd);
void ft_pci_setup_ls_gen4(void *blob, bd_t *bd);
#endif /* CONFIG_PCIE_LAYERSCAPE_GEN4 */
int pcie_next_streamid(int currentid, int id);
int pcie_board_fix_fdt(void *fdt);
#endif //_PCIE_LAYERSCAPE_FIXUP_COMMON_H_