diff options
Diffstat (limited to 'arch/arm/mach-mvebu/mvebu-soc-id.c')
| -rw-r--r-- | arch/arm/mach-mvebu/mvebu-soc-id.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/arch/arm/mach-mvebu/mvebu-soc-id.c b/arch/arm/mach-mvebu/mvebu-soc-id.c index d0f35b4d4a23..a99434bcee84 100644 --- a/arch/arm/mach-mvebu/mvebu-soc-id.c +++ b/arch/arm/mach-mvebu/mvebu-soc-id.c @@ -25,6 +25,7 @@ #include <linux/of_address.h> #include <linux/slab.h> #include <linux/sys_soc.h> +#include "common.h" #include "mvebu-soc-id.h" #define PCIE_DEV_ID_OFF 0x0 @@ -51,10 +52,10 @@ int mvebu_get_soc_id(u32 *dev, u32 *rev) *rev = soc_rev; return 0; } else - return -1; + return -ENODEV; } -static int __init mvebu_soc_id_init(void) +static int __init get_soc_id_by_pci(void) { struct device_node *np; int ret = 0; @@ -129,6 +130,22 @@ clk_err: return ret; } + +static int __init mvebu_soc_id_init(void) +{ + + /* + * First try to get the ID and the revision by the system + * register and use PCI registers only if it is not possible + */ + if (!mvebu_system_controller_get_soc_id(&soc_dev_id, &soc_rev)) { + is_id_valid = true; + pr_info("MVEBU SoC ID=0x%X, Rev=0x%X\n", soc_dev_id, soc_rev); + return 0; + } + + return get_soc_id_by_pci(); +} early_initcall(mvebu_soc_id_init); static int __init mvebu_soc_device(void) |