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Commit 2d95378b authored by Fabio Estevam's avatar Fabio Estevam Committed by Sascha Hauer
Browse files

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: default avatarFabio Estevam <fabio.estevam@freescale.com>
LAKML-Reference: 1301068367-18937-1-git-send-email-fabio.estevam@freescale.com
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 0575b4b8

arch/arm/mach-mx5/clock-mx51-mx53.c

+1 −0
Original line number Diff line number Diff line
@@ -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);

arch/arm/mach-mx5/cpu.c

+23 −0
Original line number Diff line number Diff line
@@ -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;

arch/arm/plat-mxc/include/mach/common.h

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/arm/plat-mxc/include/mach/mx53.h

+0 −13
Original line number Diff line number Diff line
@@ -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__ */