Blackfin arch: fix bug - detect 0.1 silicon revision BF527-EZKIT as 0.0 version
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
diff --git a/include/asm-blackfin/processor.h b/include/asm-blackfin/processor.h
index 1c00407..6f3995b 100644
--- a/include/asm-blackfin/processor.h
+++ b/include/asm-blackfin/processor.h
@@ -112,7 +112,26 @@
static inline uint32_t __pure bfin_revid(void)
{
/* stored in the upper 4 bits */
- return bfin_read_CHIPID() >> 28;
+ uint32_t revid = bfin_read_CHIPID() >> 28;
+
+#ifdef CONFIG_BF52x
+ /* ANOMALY_05000357
+ * Incorrect Revision Number in DSPID Register
+ */
+ if (revid == 0)
+ switch (bfin_read16(_BOOTROM_GET_DXE_ADDRESS_TWI)) {
+ case 0x0010:
+ revid = 0;
+ break;
+ case 0x2796:
+ revid = 1;
+ break;
+ default:
+ revid = 0xFFFF;
+ break;
+ }
+#endif
+ return revid;
}
static inline uint32_t __pure bfin_compiled_revid(void)
