On Monday, September 20, 2010 17:44:38 Mike Frysinger wrote: > finally got around to testing this. seems like the init needs some work. > if i power on the system (cold boot), boot Linux over the on-chip mac, and > let Linux program the enc part, it works fine under Linux. then i do a > software reset back into u-boot, it can use the enc fine too. > > but if i cold boot u-boot and try to use the enc part, i get: > timeout waiting for CLKRDY > enabling DEBUG doesnt show any additional output though.
comparing the linux and u-boot drivers leads me to this fix:
--- a/drivers/net/enc28j60.c
+++ b/drivers/net/enc28j60.c
@@ -632,6 +632,8 @@ static int enc_clock_wait(enc_dev_t *enc)
{
uint64_t etime;
+ enc_bclr(enc, CTL_REG_ECON2, ENC_ECON2_PWRSV);
+
/* one second timeout */
etime = get_ticks() + get_tbclk();
i dont know if Ben wants to squash this change in his next tree, or do a patch
on top of it ...
-mike
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