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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-20 11:38:27 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-20 11:38:27 +0200 |
| commit | c721be2807467819d16db4d61a4c5db539bcc1c7 (patch) | |
| tree | ee166b44ad37480d3f05b6a0930bd69e16c6fbf9 /arch/arm/mach-imx/cpu-imx35.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/nico/orion into devel-stable (diff) | |
| parent | ARM: imx: move mx3 support to mach-imx (diff) | |
| download | linux-c721be2807467819d16db4d61a4c5db539bcc1c7.tar.xz linux-c721be2807467819d16db4d61a4c5db539bcc1c7.zip | |
Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel-stable
Diffstat (limited to 'arch/arm/mach-imx/cpu-imx35.c')
| -rw-r--r-- | arch/arm/mach-imx/cpu-imx35.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/cpu-imx35.c b/arch/arm/mach-imx/cpu-imx35.c new file mode 100644 index 000000000000..6637cd819ecb --- /dev/null +++ b/arch/arm/mach-imx/cpu-imx35.c @@ -0,0 +1,44 @@ +/* + * MX35 CPU type detection + * + * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#include <linux/module.h> +#include <linux/io.h> +#include <mach/hardware.h> +#include <mach/iim.h> + +unsigned int mx35_cpu_rev; +EXPORT_SYMBOL(mx35_cpu_rev); + +void __init mx35_read_cpu_rev(void) +{ + u32 rev; + char *srev; + + rev = __raw_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV)); + switch (rev) { + case 0x00: + mx35_cpu_rev = IMX_CHIP_REVISION_1_0; + srev = "1.0"; + break; + case 0x10: + mx35_cpu_rev = IMX_CHIP_REVISION_2_0; + srev = "2.0"; + break; + case 0x11: + mx35_cpu_rev = IMX_CHIP_REVISION_2_1; + srev = "2.1"; + break; + default: + mx35_cpu_rev = IMX_CHIP_REVISION_UNKNOWN; + srev = "unknown"; + } + + printk(KERN_INFO "CPU identified as i.MX35, silicon rev %s\n", srev); +} |