misc: ocotp: add i.MX8M support

i.MX8M OCOTP follow same flow as i.MX6Q, but it has 64 banks
and each bank 4 words.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>

drivers/misc/mxc_ocotp.c

@@ -35,6 +35,8 @@
 #define BM_OUT_STATUS_DED				0x00000400
 #define BM_OUT_STATUS_LOCKED			0x00000800
 #define BM_OUT_STATUS_PROGFAIL			0x00001000
+#elif defined(CONFIG_MX8M)
+#define BM_CTRL_ADDR			0x000000ff
 #else
 #define BM_CTRL_ADDR			0x0000007f
 #endif
@@ -79,6 +81,9 @@
 #elif defined(CONFIG_MX7ULP)
 #define FUSE_BANK_SIZE	0x80
 #define FUSE_BANKS	31
+#elif defined(CONFIG_MX8M)
+#define FUSE_BANK_SIZE	0x40
+#define FUSE_BANKS	64
 #else
 #error "Unsupported architecture\n"
 #endif
@@ -294,6 +299,8 @@ static void setup_direct_access(struct ocotp_regs *regs, u32 bank, u32 word,
 	u32 wr_unlock = write ? BV_CTRL_WR_UNLOCK_KEY : 0;
 #ifdef CONFIG_MX7
 	u32 addr = bank;
+#elif defined CONFIG_MX8M
+	u32 addr = bank << 2 | word;
 #else
 	u32 addr;
 	/* Bank 7 and Bank 8 only supports 4 words each for i.MX6ULL */