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| author | Eric Bénard <eric@eukrea.com> | 2012-02-27 09:20:09 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-02-27 19:58:22 +0100 |
| commit | e27e6a24b84b59ff621b5c06cbc63cb2fbda9715 (patch) | |
| tree | 1d96db4d783d2c89bb823d6d10a856c05a865c07 /arch/arm/mach-imx/imx53.c | |
| parent | 95590186463ac0c02ec730d64e1bd2c65e1e66ef (diff) | |
| download | barebox-e27e6a24b84b59ff621b5c06cbc63cb2fbda9715.tar.gz barebox-e27e6a24b84b59ff621b5c06cbc63cb2fbda9715.tar.xz | |
i.MX53: add silicon revision functions
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-imx/imx53.c')
| -rw-r--r-- | arch/arm/mach-imx/imx53.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/imx53.c b/arch/arm/mach-imx/imx53.c index 4f7d1cbc00..8742c46d0b 100644 --- a/arch/arm/mach-imx/imx53.c +++ b/arch/arm/mach-imx/imx53.c @@ -20,7 +20,7 @@ #include <io.h> #include <sizes.h> #include <mach/imx5.h> -#include <mach/imx53-regs.h> +#include <mach/imx-regs.h> #include <mach/clock-imx51_53.h> #include "gpio.h" @@ -37,6 +37,51 @@ void *imx_gpio_base[] = { int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32; +#define SI_REV 0x48 + +static u32 mx53_silicon_revision; +static char *mx53_rev_string = "unknown"; + +int imx_silicon_revision(void) +{ + return mx53_silicon_revision; +} + +static int query_silicon_revision(void) +{ + void __iomem *rom = MX53_IROM_BASE_ADDR; + u32 rev; + + rev = readl(rom + SI_REV); + switch (rev) { + case 0x10: + mx53_silicon_revision = IMX_CHIP_REV_1_0; + mx53_rev_string = "1.0"; + break; + case 0x20: + mx53_silicon_revision = IMX_CHIP_REV_2_0; + mx53_rev_string = "2.0"; + break; + case 0x21: + mx53_silicon_revision = IMX_CHIP_REV_2_1; + mx53_rev_string = "2.1"; + break; + default: + mx53_silicon_revision = 0; + } + + return 0; +} +core_initcall(query_silicon_revision); + +static int imx53_print_silicon_rev(void) +{ + printf("detected i.MX53 rev %s\n", mx53_rev_string); + + return 0; +} +device_initcall(imx53_print_silicon_rev); + static int imx53_init(void) { add_generic_device("imx_iim", 0, NULL, MX53_IIM_BASE_ADDR, SZ_4K, |