On Tue, Feb 21, 2012 at 01:27:35AM +0100, Eric Bénard wrote:
> Signed-off-by: Eric Bénard <eric@xxxxxxxxxx>
> ---
> arch/arm/mach-imx/imx53.c | 45 +++++++++++++++++++++++++++
> arch/arm/mach-imx/include/mach/imx53-regs.h | 5 +++
> 2 files changed, 50 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-imx/imx53.c b/arch/arm/mach-imx/imx53.c
> index 4f7d1cb..acb9d49 100644
> --- a/arch/arm/mach-imx/imx53.c
> +++ b/arch/arm/mach-imx/imx53.c
> @@ -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 = MX53_CHIP_REV_1_0;
> + mx53_rev_string = "1.0";
> + break;
> + case 0x20:
> + mx53_silicon_revision = MX53_CHIP_REV_2_0;
> + mx53_rev_string = "2.0";
> + break;
> + case 0x21:
> + mx53_silicon_revision = MX53_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,
> diff --git a/arch/arm/mach-imx/include/mach/imx53-regs.h b/arch/arm/mach-imx/include/mach/imx53-regs.h
> index 8fefc54..065bf08 100644
> --- a/arch/arm/mach-imx/include/mach/imx53-regs.h
> +++ b/arch/arm/mach-imx/include/mach/imx53-regs.h
> @@ -135,5 +135,10 @@
> #define MX53_CS2_96MB_BASE_ADDR 0xF6000000
> #define MX53_CS3_BASE_ADDR 0xF6000000
>
> +/* silicon revisions specific to i.MX53 */
> +#define MX53_CHIP_REV_1_0 0x10
> +#define MX53_CHIP_REV_2_0 0x20
> +#define MX53_CHIP_REV_2_1 0x21
Can you please add the chip revisions to imx-regs.h and replace the
MX53_ prefix with a IMX_ prefix? They are the same for all i.MX SoCs.
We can then let the other SoCs use these defines later.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
