diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/boot/dts/prpmc2800.dts | 6 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/mv64x60_dev.c | 64 | ||||
| -rw-r--r-- | arch/ppc/syslib/mv64x60.c | 29 |
3 files changed, 99 insertions, 0 deletions
diff --git a/arch/powerpc/boot/dts/prpmc2800.dts b/arch/powerpc/boot/dts/prpmc2800.dts index 699d0df574d5..5300b50cdc2f 100644 --- a/arch/powerpc/boot/dts/prpmc2800.dts +++ b/arch/powerpc/boot/dts/prpmc2800.dts @@ -207,6 +207,12 @@ interrupt-parent = <&/mv64x60/pic>; }; + wdt@b410 { /* watchdog timer */ + compatible = "marvell,mv64x60-wdt"; + reg = <b410 8>; + timeout = <a>; /* wdt timeout in seconds */ + }; + i2c@c000 { device_type = "i2c"; compatible = "marvell,mv64x60-i2c"; diff --git a/arch/powerpc/sysdev/mv64x60_dev.c b/arch/powerpc/sysdev/mv64x60_dev.c index b618fa60aef3..548a32082e4a 100644 --- a/arch/powerpc/sysdev/mv64x60_dev.c +++ b/arch/powerpc/sysdev/mv64x60_dev.c @@ -390,6 +390,61 @@ error: return err; } +/* + * Create mv64x60_wdt platform devices + */ +static int __init mv64x60_wdt_device_setup(struct device_node *np, int id) +{ + struct resource r; + struct platform_device *pdev; + struct mv64x60_wdt_pdata pdata; + const unsigned int *prop; + int err; + + err = of_address_to_resource(np, 0, &r); + if (err) + return err; + + memset(&pdata, 0, sizeof(pdata)); + + prop = of_get_property(np, "timeout", NULL); + if (!prop) + return -ENODEV; + pdata.timeout = *prop; + + np = of_get_parent(np); + if (!np) + return -ENODEV; + + prop = of_get_property(np, "clock-frequency", NULL); + of_node_put(np); + if (!prop) + return -ENODEV; + pdata.bus_clk = *prop / 1000000; /* wdt driver wants freq in MHz */ + + pdev = platform_device_alloc(MV64x60_WDT_NAME, id); + if (!pdev) + return -ENOMEM; + + err = platform_device_add_resources(pdev, &r, 1); + if (err) + goto error; + + err = platform_device_add_data(pdev, &pdata, sizeof(pdata)); + if (err) + goto error; + + err = platform_device_add(pdev); + if (err) + goto error; + + return 0; + +error: + platform_device_put(pdev); + return err; +} + static int __init mv64x60_device_setup(void) { struct device_node *np = NULL; @@ -414,6 +469,15 @@ static int __init mv64x60_device_setup(void) if ((err = mv64x60_i2c_device_setup(np, id))) goto error; + /* support up to one watchdog timer */ + np = of_find_compatible_node(np, NULL, "marvell,mv64x60-wdt"); + if (np) { + if ((err = mv64x60_wdt_device_setup(np, id))) + goto error; + of_node_put(np); + } + + return 0; error: diff --git a/arch/ppc/syslib/mv64x60.c b/arch/ppc/syslib/mv64x60.c index d212b1c418a9..2744b8a6f66a 100644 --- a/arch/ppc/syslib/mv64x60.c +++ b/arch/ppc/syslib/mv64x60.c @@ -441,6 +441,32 @@ static struct platform_device i2c_device = { }; #endif +#ifdef CONFIG_WATCHDOG +static struct mv64x60_wdt_pdata mv64x60_wdt_pdata = { + .timeout = 10, /* default watchdog expiry in seconds */ + .bus_clk = 133, /* default bus clock in MHz */ +}; + +static struct resource mv64x60_wdt_resources[] = { + [0] = { + .name = "mv64x60 wdt base", + .start = MV64x60_WDT_WDC, + .end = MV64x60_WDT_WDC + 8 - 1, /* two 32-bit registers */ + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device wdt_device = { + .name = MV64x60_WDT_NAME, + .id = 0, + .num_resources = ARRAY_SIZE(mv64x60_wdt_resources), + .resource = mv64x60_wdt_resources, + .dev = { + .platform_data = &mv64x60_wdt_pdata, + }, +}; +#endif + #if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260) static struct mv64xxx_pdata mv64xxx_pdata = { .hs_reg_valid = 0, @@ -476,6 +502,9 @@ static struct platform_device *mv64x60_pd_devs[] __initdata = { #ifdef CONFIG_I2C_MV64XXX &i2c_device, #endif +#ifdef CONFIG_MV64X60_WDT + &wdt_device, +#endif #if defined(CONFIG_SYSFS) && !defined(CONFIG_GT64260) &mv64xxx_device, #endif |