From: wdenk <wdenk>
Date: Sat, 10 Aug 2002 14:42:23 +0000 (+0000)
Subject: Fix "No PHY device found" problem on ICU862 boards
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=cd9b4441c4183e00864e397ff4b5f859abf898ea;p=users%2Frw%2Fppcboot.git

Fix "No PHY device found" problem on ICU862 boards
---

diff --git a/CHANGELOG b/CHANGELOG
index 9720c02..2a4dcc8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,13 @@
 Modifications for 1.2.0:
 ======================================================================
 
+* Fix "No PHY device found" problem on ICU862 boards:
+  On the ICU862 board the MII-MDC pin is routed to PD8 pin of CPU. So
+  for this board we need to configure Utopia and enable PD8 to
+  MII-MDC function, because the existing FEC code only checks Utopia
+  mode and configures PCMCIA port A for MII.
+
+
 * Patch by Greg Allen, 6 Aug 2002:
   Make the mpc824x correctly report the cpurevision according to
   Motorola's docs.
diff --git a/cpu/mpc8xx/fec.c b/cpu/mpc8xx/fec.c
index a8fa981..dd22679 100644
--- a/cpu/mpc8xx/fec.c
+++ b/cpu/mpc8xx/fec.c
@@ -363,6 +363,14 @@ static int fec_init(struct eth_device* dev, bd_t * bd)
 	/* Configure port A for MII.
 	*/
 
+#if defined(CONFIG_ICU862) && defined(CFG_DISCOVER_PHY)
+
+	/* On the ICU862 board the MII-MDC pin is routed to PD8 pin
+	 * of CPU, so for this board we need to configure Utopia and
+	 * enable PD8 to MII-MDC function */
+	immr->im_ioport.iop_pdpar |= 0x4080;
+#endif
+
 	/* Has Utopia been configured? */
 	if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
 		/*
@@ -615,6 +623,14 @@ void mii_init (bd_t *bd)
 	/* Configure port A for MII.
 	*/
 
+#if defined(CONFIG_ICU862)
+
+	/* On the ICU862 board the MII-MDC pin is routed to PD8 pin
+	 * of CPU, so for this board we need to configure Utopia and 
+	 * enable PD8 to MII-MDC function */
+	immr->im_ioport.iop_pdpar |= 0x4080;
+#endif
+
 	/* Has Utopia been configured? */
 	if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
 		/*