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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 | |
| parent | 0575b4b83edb0a766a9c1518a5da57780f386340 (diff) | |
| download | kernel_samsung_smdk4412-2d95378b043f082192a11f8476e3f63291c3477b.zip kernel_samsung_smdk4412-2d95378b043f082192a11f8476e3f63291c3477b.tar.gz kernel_samsung_smdk4412-2d95378b043f082192a11f8476e3f63291c3477b.tar.bz2 | |
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')
| -rw-r--r-- | arch/arm/mach-mx5/clock-mx51-mx53.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mx5/cpu.c | 23 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/common.h | 1 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/mx53.h | 13 |
4 files changed, 25 insertions, 13 deletions
diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index fdbc05e..6b89c1b 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 472bdfa..86f87da 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; diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h index a22ebe1..bfa1ffc 100644 --- a/arch/arm/plat-mxc/include/mach/common.h +++ b/arch/arm/plat-mxc/include/mach/common.h @@ -68,4 +68,5 @@ extern void mxc91231_arch_reset(int, const char *); extern void mxc91231_prepare_idle(void); extern void mx51_efikamx_reset(void); extern int mx53_revision(void); +extern int mx53_display_revision(void); #endif diff --git a/arch/arm/plat-mxc/include/mach/mx53.h b/arch/arm/plat-mxc/include/mach/mx53.h index ace1786..9d2a1ef 100644 --- a/arch/arm/plat-mxc/include/mach/mx53.h +++ b/arch/arm/plat-mxc/include/mach/mx53.h @@ -337,17 +337,4 @@ #define MX53_INT_GPIO7_LOW 107 #define MX53_INT_GPIO7_HIGH 108 -/* silicon revisions specific to i.MX53 */ -#define MX53_CHIP_REV_1_0 0x10 -#define MX53_CHIP_REV_1_1 0x11 -#define MX53_CHIP_REV_1_2 0x12 -#define MX53_CHIP_REV_1_3 0x13 -#define MX53_CHIP_REV_2_0 0x20 -#define MX53_CHIP_REV_2_1 0x21 -#define MX53_CHIP_REV_2_2 0x22 -#define MX53_CHIP_REV_2_3 0x23 -#define MX53_CHIP_REV_3_0 0x30 -#define MX53_CHIP_REV_3_1 0x31 -#define MX53_CHIP_REV_3_2 0x32 - #endif /* ifndef __MACH_MX53_H__ */ |