[PATCH] ppc32: add Freescale MPC885ADS board support

This patch adds the Freescale MPC86xADS board support.  The supported
devices are SMC UART and 10Mbit ethernet on SCC1.

The manual for the board says that it "is compatible with the MPC8xxFADS
for software point of view".  That's why this patch extends FADS instead of
introducing a new platform.

FEC is not supported as the "combined FCC/FEC ethernet driver" driver by
Pantelis Antoniou should replace the current FEC driver.

Signed-off-by: Gennadiy Kurtsman <gkurtsman@ru.mvista.com>
Signed-off-by: Andrei Konovalov <akonovalov@ru.mvista.com>
Acked-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 44 insertions, 8 deletions

diff --git a/arch/ppc/8xx_io/enet.c b/arch/ppc/8xx_io/enet.c
index 4ea7158e5062..ece6a9fbe09b 100644
--- a/arch/ppc/8xx_io/enet.c
+++ b/arch/ppc/8xx_io/enet.c
@@ -714,16 +714,24 @@ static int __init scc_enet_init(void)
         immap->im_ioport.iop_pcdat &= ~PC_ENET_LBK;     /* Disable Loopback */
 #endif  /* PC_ENET_LBK */
 
-        /* Configure port C pins to enable CLSN and RENA.
+#ifdef PE_ENET_TCLK
+        /* Configure port E for TCLK and RCLK.
         */
-        immap->im_ioport.iop_pcpar &= ~(PC_ENET_CLSN | PC_ENET_RENA);
-        immap->im_ioport.iop_pcdir &= ~(PC_ENET_CLSN | PC_ENET_RENA);
-        immap->im_ioport.iop_pcso  |=  (PC_ENET_CLSN | PC_ENET_RENA);
-
+        cp->cp_pepar |=  (PE_ENET_TCLK | PE_ENET_RCLK);
+        cp->cp_pedir &= ~(PE_ENET_TCLK | PE_ENET_RCLK);
+        cp->cp_peso  &= ~(PE_ENET_TCLK | PE_ENET_RCLK);
+#else
         /* Configure port A for TCLK and RCLK.
         */
         immap->im_ioport.iop_papar |=  (PA_ENET_TCLK | PA_ENET_RCLK);
         immap->im_ioport.iop_padir &= ~(PA_ENET_TCLK | PA_ENET_RCLK);
+#endif
+
+        /* Configure port C pins to enable CLSN and RENA.
+        */
+        immap->im_ioport.iop_pcpar &= ~(PC_ENET_CLSN | PC_ENET_RENA);
+        immap->im_ioport.iop_pcdir &= ~(PC_ENET_CLSN | PC_ENET_RENA);
+        immap->im_ioport.iop_pcso  |=  (PC_ENET_CLSN | PC_ENET_RENA);
 
         /* Configure Serial Interface clock routing.
          * First, clear all SCC bits to zero, then set the ones we want.
@@ -896,14 +904,18 @@ static int __init scc_enet_init(void)
         /* It is now OK to enable the Ethernet transmitter.
          * Unfortunately, there are board implementation differences here.
          */
-#if   (!defined (PB_ENET_TENA) &&  defined (PC_ENET_TENA))
+#if   (!defined (PB_ENET_TENA) &&  defined (PC_ENET_TENA) && !defined (PE_ENET_TENA))
         immap->im_ioport.iop_pcpar |=  PC_ENET_TENA;
         immap->im_ioport.iop_pcdir &= ~PC_ENET_TENA;
-#elif ( defined (PB_ENET_TENA) && !defined (PC_ENET_TENA))
+#elif ( defined (PB_ENET_TENA) && !defined (PC_ENET_TENA) && !defined (PE_ENET_TENA))
         cp->cp_pbpar |= PB_ENET_TENA;
         cp->cp_pbdir |= PB_ENET_TENA;
+#elif ( !defined (PB_ENET_TENA) && !defined (PC_ENET_TENA) && defined (PE_ENET_TENA))
+        cp->cp_pepar |=  PE_ENET_TENA;
+        cp->cp_pedir &= ~PE_ENET_TENA;
+        cp->cp_peso  |=  PE_ENET_TENA;
 #else
-#error Configuration Error: define exactly ONE of PB_ENET_TENA, PC_ENET_TENA
+#error Configuration Error: define exactly ONE of PB_ENET_TENA, PC_ENET_TENA, PE_ENET_TENA
 #endif
 
 #if defined(CONFIG_RPXLITE) || defined(CONFIG_RPXCLASSIC)
@@ -936,6 +948,29 @@ static int __init scc_enet_init(void)
         *((volatile uint *)BCSR1) &= ~BCSR1_ETHEN;
 #endif
 
+#ifdef CONFIG_MPC885ADS
+
+        /* Deassert PHY reset and enable the PHY.
+         */
+        {
+                volatile uint __iomem *bcsr = ioremap(BCSR_ADDR, BCSR_SIZE);
+                uint tmp;
+
+                tmp = in_be32(bcsr + 1 /* BCSR1 */);
+                tmp |= BCSR1_ETHEN;
+                out_be32(bcsr + 1, tmp);
+                tmp = in_be32(bcsr + 4 /* BCSR4 */);
+                tmp |= BCSR4_ETH10_RST;
+                out_be32(bcsr + 4, tmp);
+                iounmap(bcsr);
+        }
+
+        /* On MPC885ADS SCC ethernet PHY defaults to the full duplex mode
+         * upon reset. SCC is set to half duplex by default. So this
+         * inconsistency should be better fixed by the software.
+         */
+#endif
+
         dev->base_addr = (unsigned long)ep;
 #if 0
         dev->name = "CPM_ENET";
@@ -969,3 +1004,4 @@ static int __init scc_enet_init(void)
 }
 
 module_init(scc_enet_init);
+