summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-at91/setup.c
diff options
context:
space:
mode:
authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2012-03-02 20:16:27 +0100
committerJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2012-03-15 16:31:22 +0100
commitc8082d344ac4c05932fec1766e5e9ce72cf286ed (patch)
tree8a2a7a4b2a61b3780c669b916b33a0cde09a7722 /arch/arm/mach-at91/setup.c
parentARM: at91: always enable sam9 restart (diff)
downloadlinux-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 '')
-rw-r--r--arch/arm/mach-at91/setup.c30
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();