diff options
author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-03-03 03:16:27 +0800 |
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committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-03-15 23:31:22 +0800 |
commit | c8082d344ac4c05932fec1766e5e9ce72cf286ed (patch) | |
tree | 8a2a7a4b2a61b3780c669b916b33a0cde09a7722 /arch | |
parent | 21ea52aadd6296480baad3b04fef87230517b54c (diff) |
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')
-rw-r--r-- | arch/arm/boot/dts/at91sam9g20.dtsi | 5 | ||||
-rw-r--r-- | arch/arm/boot/dts/at91sam9g45.dtsi | 5 | ||||
-rw-r--r-- | arch/arm/boot/dts/at91sam9x5.dtsi | 5 | ||||
-rw-r--r-- | arch/arm/mach-at91/at91sam9x5.c | 1 | ||||
-rw-r--r-- | arch/arm/mach-at91/setup.c | 30 |
5 files changed, 45 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/at91sam9g20.dtsi b/arch/arm/boot/dts/at91sam9g20.dtsi index dd5d114a0e1..bcad6e7dccc 100644 --- a/arch/arm/boot/dts/at91sam9g20.dtsi +++ b/arch/arm/boot/dts/at91sam9g20.dtsi @@ -64,6 +64,11 @@ reg = <0xfffffc00 0x100>; }; + rstc@fffffd00 { + compatible = "atmel,at91sam9260-rstc"; + reg = <0xfffffd00 0x10>; + }; + pit: timer@fffffd30 { compatible = "atmel,at91sam9260-pit"; reg = <0xfffffd30 0xf>; diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi index 621a329307d..faccd4f5aac 100644 --- a/arch/arm/boot/dts/at91sam9g45.dtsi +++ b/arch/arm/boot/dts/at91sam9g45.dtsi @@ -65,6 +65,11 @@ reg = <0xfffffc00 0x100>; }; + rstc@fffffd00 { + compatible = "atmel,at91sam9g45-rstc"; + reg = <0xfffffd00 0x10>; + }; + pit: timer@fffffd30 { compatible = "atmel,at91sam9260-pit"; reg = <0xfffffd30 0xf>; diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi index 3855843fc03..d9a93fdd35a 100644 --- a/arch/arm/boot/dts/at91sam9x5.dtsi +++ b/arch/arm/boot/dts/at91sam9x5.dtsi @@ -63,6 +63,11 @@ reg = <0xfffffc00 0x100>; }; + rstc@fffffe00 { + compatible = "atmel,at91sam9g45-rstc"; + reg = <0xfffffe00 0x10>; + }; + pit: timer@fffffe30 { compatible = "atmel,at91sam9260-pit"; reg = <0xfffffe30 0xf>; diff --git a/arch/arm/mach-at91/at91sam9x5.c b/arch/arm/mach-at91/at91sam9x5.c index 7bec5a40d01..c121fe5fabb 100644 --- a/arch/arm/mach-at91/at91sam9x5.c +++ b/arch/arm/mach-at91/at91sam9x5.c @@ -306,7 +306,6 @@ static void __init at91sam9x5_ioremap_registers(void) void __init at91sam9x5_initialize(void) { - arm_pm_restart = at91sam9g45_restart; at91_extern_irq = (1 << AT91SAM9X5_ID_IRQ0); /* Register GPIO subsystem (using DT) */ diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c index d7abc25f6c6..3e48b59dfa7 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(); |