diff options
| author | lars <lars@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2010-01-31 12:09:52 +0000 |
|---|---|---|
| committer | lars <lars@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2010-01-31 12:09:52 +0000 |
| commit | 40558623d264e4f4989dce19ac6679ab39cc4429 (patch) | |
| tree | 0830623f93b90b3306cfcc990c8a44a396770292 /target | |
| parent | 6b4b0de60b4d3e6f6ae69a9ee9dfb0cf9f25322f (diff) | |
[xburst] rtc-jz4740: reset rtc clock if it has lost its state
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19437 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/xburst/files-2.6.32/drivers/rtc/rtc-jz4740.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/target/linux/xburst/files-2.6.32/drivers/rtc/rtc-jz4740.c b/target/linux/xburst/files-2.6.32/drivers/rtc/rtc-jz4740.c index 190b54afd..2039eb3de 100644 --- a/target/linux/xburst/files-2.6.32/drivers/rtc/rtc-jz4740.c +++ b/target/linux/xburst/files-2.6.32/drivers/rtc/rtc-jz4740.c @@ -22,7 +22,8 @@ #define JZ_REG_RTC_CTRL 0x00 #define JZ_REG_RTC_SEC 0x04 #define JZ_REG_RTC_SEC_ALARM 0x08 -#define JZ_REG_REGULATOR 0x0C +#define JZ_REG_RTC_REGULATOR 0x0C +#define JZ_REG_RTC_SCRATCHPAD 0x34 #define JZ_RTC_CTRL_WRDY BIT(7) #define JZ_RTC_CTRL_1HZ BIT(6) @@ -211,6 +212,7 @@ static int __devinit jz4740_rtc_probe(struct platform_device *pdev) { int ret; struct jz4740_rtc *rtc; + uint32_t scratchpad; rtc = kmalloc(sizeof(*rtc), GFP_KERNEL); @@ -264,7 +266,12 @@ static int __devinit jz4740_rtc_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Failed to request rtc irq: %d\n", ret); goto err_unregister_rtc; } - printk("rtc-ctrl: %d\n", jz4740_rtc_reg_read(rtc, JZ_REG_RTC_CTRL)); + + scratchpad = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_SCRATCHPAD); + if (scratchpad != 0x12345678) { + jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SCRATCHPAD, 0x12345678); + jz4740_rtc_reg_write(rtc, JZ_REG_RTC_SEC, 0); + } return 0; |