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| author |   Fabio Estevam <festevam@gmail.com> | 2011-03-17 23:32:11 -0300 |
|---|---|---|
| committer |   Sascha Hauer <s.hauer@pengutronix.de> | 2011-03-23 15:07:47 +0100 |
| commit | 76422dbf3ccdd46d925cdb0909445e4616b55187 (patch) | |
| tree | 782436741dc74d10c46fa5ae2cc0ca1b36f8ae09 /arch/arm/mach-mx5 | |
| parent | Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx (diff) | |
| download | linux-dev-76422dbf3ccdd46d925cdb0909445e4616b55187.tar.xz linux-dev-76422dbf3ccdd46d925cdb0909445e4616b55187.zip | |
ARM: mx51: Print silicon revision on boot
Having the silicon revision to appear on the boot log is a useful information.
MX31 and MX35 already show the silicon revision on boot.
Add support for displaying such information for MX51 as well.
Tested on a MX51EVK, where it shows:
CPU identified as i.MX51, silicon rev 3.0
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx5')
| -rw-r--r-- | arch/arm/mach-mx5/clock-mx51-mx53.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mx5/cpu.c | 20 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index 652ace413825..cc6ad1cf48db 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1511,6 +1511,7 @@ int __init mx51_clocks_init(unsigned long ckil, unsigned long osc, clk_enable(&iim_clk); mx51_revision(); clk_disable(&iim_clk); + mx51_display_revision(); /* move usb_phy_clk to 24MHz */ clk_set_parent(&usb_phy1_clk, &osc_clk); diff --git a/arch/arm/mach-mx5/cpu.c b/arch/arm/mach-mx5/cpu.c index df46b5e60857..3b4c30743052 100644 --- a/arch/arm/mach-mx5/cpu.c +++ b/arch/arm/mach-mx5/cpu.c @@ -51,6 +51,26 @@ int mx51_revision(void) } EXPORT_SYMBOL(mx51_revision); +void mx51_display_revision(void) +{ + int rev; + char *srev; + rev = mx51_revision(); + + switch (rev) { + case IMX_CHIP_REVISION_2_0: + srev = IMX_CHIP_REVISION_2_0_STRING; + break; + case IMX_CHIP_REVISION_3_0: + srev = IMX_CHIP_REVISION_3_0_STRING; + break; + default: + srev = IMX_CHIP_REVISION_UNKNOWN_STRING; + } + printk(KERN_INFO "CPU identified as i.MX51, silicon rev %s\n", srev); +} +EXPORT_SYMBOL(mx51_display_revision); + #ifdef CONFIG_NEON /* |