mx23: Add support on print_cpuinfo()

Add information to identify i.MX23 chips and its known revisions.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>

diff --git a/arch/arm/cpu/arm926ejs/mxs/mxs.c b/arch/arm/cpu/arm926ejs/mxs/mxs.c
index 6ce8019..a748623 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mxs/mxs.c
+++ b/arch/arm/cpu/arm926ejs/mxs/mxs.c
@@ -1,5 +1,5 @@
 /*
- * Freescale i.MX28 common code
+ * Freescale i.MX23/i.MX28 common code
  *
  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
  * on behalf of DENX Software Engineering GmbH
@@ -196,6 +196,8 @@ static const char *get_cpu_type(void)
                (struct mxs_digctl_regs *)MXS_DIGCTL_BASE;
 
        switch (readl(&digctl_regs->hw_digctl_chipid) & HW_DIGCTL_CHIPID_MASK) {
+       case HW_DIGCTL_CHIPID_MX23:
+               return "23";
        case HW_DIGCTL_CHIPID_MX28:
                return "28";
        default:
@@ -210,6 +212,21 @@ static const char *get_cpu_rev(void)
        uint8_t rev = readl(&digctl_regs->hw_digctl_chipid) & 0x000000FF;
 
        switch (readl(&digctl_regs->hw_digctl_chipid) & HW_DIGCTL_CHIPID_MASK) {
+       case HW_DIGCTL_CHIPID_MX23:
+               switch (rev) {
+               case 0x0:
+                       return "1.0";
+               case 0x1:
+                       return "1.1";
+               case 0x2:
+                       return "1.2";
+               case 0x3:
+                       return "1.3";
+               case 0x4:
+                       return "1.4";
+               default:
+                       return "??";
+               }
        case HW_DIGCTL_CHIPID_MX28:
                switch (rev) {
                case 0x1:

diff --git a/arch/arm/include/asm/arch-mxs/regs-digctl.h b/arch/arm/include/asm/arch-mxs/regs-digctl.h
index e7cc4b4..d043325 100644 (file)
--- a/arch/arm/include/asm/arch-mxs/regs-digctl.h
+++ b/arch/arm/include/asm/arch-mxs/regs-digctl.h
@@ -154,6 +154,7 @@ struct mxs_digctl_regs {
 
 /* Product code identification */
 #define HW_DIGCTL_CHIPID_MASK  (0xffff << 16)
+#define HW_DIGCTL_CHIPID_MX23  (0x3780 << 16)
 #define HW_DIGCTL_CHIPID_MX28  (0x2800 << 16)
 
 #endif /* __MX28_REGS_DIGCTL_H__ */