diff options
author | Fabio Estevam <fabio.estevam@freescale.com> | 2011-03-25 11:52:47 -0400 |
---|---|---|
committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-05-19 07:11:00 -0400 |
commit | 2d95378b043f082192a11f8476e3f63291c3477b (patch) | |
tree | cbbff497f70ab4863362bed263b1e59e697599c3 /arch/arm/mach-mx5/cpu.c | |
parent | 0575b4b83edb0a766a9c1518a5da57780f386340 (diff) |
ARM: mx53: Print silicon revision on boot
Having the silicon revision to appear on the boot log is a useful information.
MX31, MX35 and MX51 already show the silicon revision on boot.
Add support for displaying such information for MX53 as well.
Tested on a mx53loco board, where it shows:
CPU identified as i.MX53, silicon rev 2.0
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
LAKML-Reference: 1301068367-18937-1-git-send-email-fabio.estevam@freescale.com
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx5/cpu.c')
-rw-r--r-- | arch/arm/mach-mx5/cpu.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/cpu.c b/arch/arm/mach-mx5/cpu.c index 472bdfab2e55..86f87da59c64 100644 --- a/arch/arm/mach-mx5/cpu.c +++ b/arch/arm/mach-mx5/cpu.c | |||
@@ -166,6 +166,29 @@ int mx50_revision(void) | |||
166 | } | 166 | } |
167 | EXPORT_SYMBOL(mx50_revision); | 167 | EXPORT_SYMBOL(mx50_revision); |
168 | 168 | ||
169 | void mx53_display_revision(void) | ||
170 | { | ||
171 | int rev; | ||
172 | char *srev; | ||
173 | rev = mx53_revision(); | ||
174 | |||
175 | switch (rev) { | ||
176 | case IMX_CHIP_REVISION_1_0: | ||
177 | srev = IMX_CHIP_REVISION_1_0_STRING; | ||
178 | break; | ||
179 | case IMX_CHIP_REVISION_2_0: | ||
180 | srev = IMX_CHIP_REVISION_2_0_STRING; | ||
181 | break; | ||
182 | case IMX_CHIP_REVISION_2_1: | ||
183 | srev = IMX_CHIP_REVISION_2_1_STRING; | ||
184 | break; | ||
185 | default: | ||
186 | srev = IMX_CHIP_REVISION_UNKNOWN_STRING; | ||
187 | } | ||
188 | printk(KERN_INFO "CPU identified as i.MX53, silicon rev %s\n", srev); | ||
189 | } | ||
190 | EXPORT_SYMBOL(mx53_display_revision); | ||
191 | |||
169 | static int __init post_cpu_init(void) | 192 | static int __init post_cpu_init(void) |
170 | { | 193 | { |
171 | unsigned int reg; | 194 | unsigned int reg; |