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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-03-02 20:16:27 +0100 |
|---|---|---|
| committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-03-15 16:31:22 +0100 |
| commit | c8082d344ac4c05932fec1766e5e9ce72cf286ed (patch) | |
| tree | 8a2a7a4b2a61b3780c669b916b33a0cde09a7722 /arch/arm/mach-at91/setup.c | |
| parent | ARM: at91: always enable sam9 restart (diff) | |
| download | linux-c8082d344ac4c05932fec1766e5e9ce72cf286ed.tar.xz linux-c8082d344ac4c05932fec1766e5e9ce72cf286ed.zip | |
ARM: at91: add RSTC (Reset Controller) dt support
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91/setup.c')
| -rw-r--r-- | arch/arm/mach-at91/setup.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c index d7abc25f6c64..3e48b59dfa74 100644 --- a/arch/arm/mach-at91/setup.c +++ b/arch/arm/mach-at91/setup.c @@ -287,8 +287,38 @@ void __init at91_ioremap_matrix(u32 base_addr) } #if defined(CONFIG_OF) +static struct of_device_id rstc_ids[] = { + { .compatible = "atmel,at91sam9260-rstc", .data = at91sam9_alt_restart }, + { .compatible = "atmel,at91sam9g45-rstc", .data = at91sam9g45_restart }, + { /*sentinel*/ } +}; + +static void at91_dt_rstc(void) +{ + struct device_node *np; + const struct of_device_id *of_id; + + np = of_find_matching_node(NULL, rstc_ids); + if (!np) + panic("unable to find compatible rstc node in dtb\n"); + + at91_rstc_base = of_iomap(np, 0); + if (!at91_rstc_base) + panic("unable to map rstc cpu registers\n"); + + of_id = of_match_node(rstc_ids, np); + if (!of_id) + panic("AT91: rtsc no restart function availlable\n"); + + arm_pm_restart = of_id->data; + + of_node_put(np); +} + void __init at91_dt_initialize(void) { + at91_dt_rstc(); + /* temporary until have the ramc binding*/ at91_boot_soc.ioremap_registers(); |