Commit 72838a17 authored by Florian Fainelli's avatar Florian Fainelli Committed by Ralf Baechle
Browse files

MIPS: AR7: register watchdog device only if enabled in hw configuration



This patch checks if the watchdog enable bit is set in the DCL register
meaning that the hardware watchdog actually works and if so, register the
ar7_wdt platform_device.
Signed-off-by: default avatarFlorian Fainelli <florian@openwrt.org>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 2cfac7f7
......@@ -503,6 +503,7 @@ static int __init ar7_register_devices(void)
{
u16 chip_id;
int res;
u32 *bootcr, val;
#ifdef CONFIG_SERIAL_8250
static struct uart_port uart_port[2];
......@@ -595,7 +596,13 @@ static int __init ar7_register_devices(void)
ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
res = platform_device_register(&ar7_wdt);
bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4);
val = *bootcr;
iounmap(bootcr);
/* Register watchdog only if enabled in hardware */
if (val & AR7_WDT_HW_ENA)
res = platform_device_register(&ar7_wdt);
return res;
}
......
......@@ -78,6 +78,9 @@
#define AR7_REF_CLOCK 25000000
#define AR7_XTAL_CLOCK 24000000
/* DCL */
#define AR7_WDT_HW_ENA 0x10
struct plat_cpmac_data {
int reset_bit;
int power_bit;
......
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