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| author | Fabio Estevam <fabio.estevam@freescale.com> | 2011-03-25 12:52:47 -0300 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-05-19 13:11:00 +0200 |
| commit | 2d95378b043f082192a11f8476e3f63291c3477b (patch) | |
| tree | cbbff497f70ab4863362bed263b1e59e697599c3 /arch/arm/mach-mx5 | |
| parent | 0575b4b83edb0a766a9c1518a5da57780f386340 (diff) | |
| download | lwn-2d95378b043f082192a11f8476e3f63291c3477b.tar.gz lwn-2d95378b043f082192a11f8476e3f63291c3477b.zip | |
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')
| -rw-r--r-- | arch/arm/mach-mx5/clock-mx51-mx53.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mx5/cpu.c | 23 |
2 files changed, 24 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index fdbc05ed5513..6b89c1bf4eb2 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1563,6 +1563,7 @@ int __init mx53_clocks_init(unsigned long ckil, unsigned long osc, clk_enable(&iim_clk); mx53_revision(); clk_disable(&iim_clk); + mx53_display_revision(); /* Set SDHC parents to be PLL2 */ clk_set_parent(&esdhc1_clk, &pll2_sw_clk); 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) } EXPORT_SYMBOL(mx50_revision); +void mx53_display_revision(void) +{ + int rev; + char *srev; + rev = mx53_revision(); + + switch (rev) { + case IMX_CHIP_REVISION_1_0: + srev = IMX_CHIP_REVISION_1_0_STRING; + break; + case IMX_CHIP_REVISION_2_0: + srev = IMX_CHIP_REVISION_2_0_STRING; + break; + case IMX_CHIP_REVISION_2_1: + srev = IMX_CHIP_REVISION_2_1_STRING; + break; + default: + srev = IMX_CHIP_REVISION_UNKNOWN_STRING; + } + printk(KERN_INFO "CPU identified as i.MX53, silicon rev %s\n", srev); +} +EXPORT_SYMBOL(mx53_display_revision); + static int __init post_cpu_init(void) { unsigned int reg; |