[U-Boot] [PATCH v3] NET: add ENC28J60 driver using SPI framework

[Mike Frysinger]

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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