[PATCH 2/2] net: macb: turn off endian_swp_pkt_en

Steffen Trumtrar s.trumtrar at pengutronix.de
Wed Mar 13 04:48:14 EDT 2013


The core has a bit for swapping packet data endianism.
Reset default from Cadence is off. Xilinx however, that uses this core on the
Zynq SoCs, opted for on. Turn it off for all devices.

Signed-off-by: Steffen Trumtrar <s.trumtrar at pengutronix.de>
Cc: Nicolas Ferre <nicolas.ferre at atmel.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 drivers/net/macb.c | 1 +
 drivers/net/macb.h | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index a12eea7..005234e 100644
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -277,6 +277,7 @@ static void macb_configure_dma(struct macb_device *bp)
 		dmacfg |= GEM_BF(FBLDO, 16);
 		dmacfg |= GEM_BIT(TXPBMS) | GEM_BF(RXBMS, -1L);
 		dmacfg |= GEM_BIT(DDRP);
+		dmacfg &= ~GEM_BIT(ENDIA);
 		gem_writel(bp, DMACFG, dmacfg);
 	}
 }
diff --git a/drivers/net/macb.h b/drivers/net/macb.h
index cadd561..1be9ff9 100644
--- a/drivers/net/macb.h
+++ b/drivers/net/macb.h
@@ -168,6 +168,8 @@
 /* Bitfields in DMACFG. */
 #define GEM_FBLDO_OFFSET			0
 #define GEM_FBLDO_SIZE				5
+#define GEM_ENDIA_OFFSET			7
+#define GEM_ENDIA_SIZE				1
 #define GEM_RXBMS_OFFSET			8
 #define GEM_RXBMS_SIZE				2
 #define GEM_TXPBMS_OFFSET			10
-- 
1.8.2.rc2




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