Blackfin arch: Add BF537-STAMP platform support for ENC28J60 SPI Ethernet MAC

This device shouldn't be considered as an alternative to a Memory Mapped
or built-in Ethernet MAC. Throughput is slow (~460kByte/s) while generating
a very high system load (~60%).

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/mach-bf537/boards/stamp.c b/arch/blackfin/mach-bf537/boards/stamp.c
index e6e722d7767ef5c26f607ed87a87e52f7d049f55..c198f9085ad503ab81da8b942ef153f6d038e454 100644 (file)
--- a/arch/blackfin/mach-bf537/boards/stamp.c
+++ b/arch/blackfin/mach-bf537/boards/stamp.c
@@ -623,6 +623,14 @@ static struct bfin5xx_spi_chip lq035q1_spi_chip_info = {
 };
 #endif
 
+#if defined(CONFIG_ENC28J60) || defined(CONFIG_ENC28J60_MODULE)
+static struct bfin5xx_spi_chip enc28j60_spi_chip_info = {
+       .enable_dma     = 1,
+       .bits_per_word  = 8,
+       .cs_gpio = GPIO_PF10,
+};
+#endif
+
 #if defined(CONFIG_MTD_DATAFLASH) \
        || defined(CONFIG_MTD_DATAFLASH_MODULE)
 
@@ -784,6 +792,17 @@ static struct spi_board_info bfin_spi_board_info[] __initdata = {
                .mode = SPI_CPHA | SPI_CPOL,
        },
 #endif
+#if defined(CONFIG_ENC28J60) || defined(CONFIG_ENC28J60_MODULE)
+       {
+               .modalias = "enc28j60",
+               .max_speed_hz = 20000000,     /* max spi clock (SCK) speed in HZ */
+               .irq = IRQ_PF6,
+               .bus_num = 0,
+               .chip_select = 0,       /* GPIO controlled SSEL */
+               .controller_data = &enc28j60_spi_chip_info,
+               .mode = SPI_MODE_0,
+       },
+#endif
 };
 
 #if defined(CONFIG_SPI_BFIN) || defined(CONFIG_SPI_BFIN_MODULE)