Re: rtc and chrony on Ultra 1 and Ultra 5

["David S. Miller" <davem@davemloft.net>]

On Tue, 19 Apr 2005 21:28:21 +0200
Frans Pop <aragorn@tiscali.nl> wrote:

> On Tuesday 19 April 2005 20:47, David S. Miller wrote:
> > Can someone provide "/usr/sbin/prtconv -pv" on either the Ultra5 or
> > Ultra10 system which fails like this?  It may provide the clue.
> Attached.

Why did the rename the device node to "eeprom"? :-/

                Node 0xf0066414
                    address:  fffba000
                    reg:  00000014.00000000.00002000
                    model: 'mk48t59'
                    name: 'eeprom'

That's your clock chip.

Give this patch a try (should apply cleanly to just about any 2.6.x)

drivers/char/rtc.c: 0af5fb0c19e378bc3c660c70873cdf22d806f9b8
--- drivers/char/rtc.c
+++ drivers/char/rtc.c	2005-04-19 12:29:00.000000000 -0700
@@ -889,6 +889,28 @@
 static irqreturn_t (*rtc_int_handler_ptr)(int irq, void *dev_id, struct pt_regs *regs);
 #endif
 
+#ifdef __sparc__
+static int is_rtc_device(char *name, int prom_node)
+{
+	unsigned char model[32];
+
+	if (!strcmp(name, "rtc"))
+		return 1;
+
+	prom_getstring(prom_node, "model", model, sizeof(model));
+	if (!strcmp(model, "mk48t02") ||
+	    !strcmp(model, "mk48t08") ||
+	    !strcmp(model, "mk48t59") ||
+	    !strcmp(model, "m5819") ||
+	    !strcmp(model, "m5819p") ||
+	    !strcmp(model, "m5823") ||
+	    !strcmp(model, "ds1287"))
+		return 1;
+
+	return 0;
+}
+#endif
+
 static int __init rtc_init(void)
 {
 	struct proc_dir_entry *ent;
@@ -909,7 +931,8 @@
 #ifdef __sparc__
 	for_each_ebus(ebus) {
 		for_each_ebusdev(edev, ebus) {
-			if(strcmp(edev->prom_name, "rtc") == 0) {
+			if (is_rtc_device(edev->prom_name,
+					  edev->prom_node)) {
 				rtc_port = edev->resource[0].start;
 				rtc_irq = edev->irqs[0];
 				goto found;
@@ -919,7 +942,8 @@
 #ifdef __sparc_v9__
 	for_each_isa(isa_br) {
 		for_each_isadev(isa_dev, isa_br) {
-			if (strcmp(isa_dev->prom_name, "rtc") == 0) {
+			if (is_rtc_device(isa_dev->prom_name,
+					  isa_dev->prom_node)) {
 				rtc_port = isa_dev->resource.start;
 				rtc_irq = isa_dev->irq;
 				goto found;