mtd: atmel_nand: add a new dt binding item for nand dma support

[karo-tx-linux.git] / drivers / mtd / nand / atmel_nand.c

diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 7bf912b5b969607040d422181dea6b34862c5023..61d38697986ecd6d4a0f7af9bd6079563d973a22 100644 (file)
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -43,8 +43,6 @@
 #include <linux/platform_data/atmel.h>
 #include <linux/pinctrl/consumer.h>
 
-#include <mach/cpu.h>
-
 static int use_dma = 1;
 module_param(use_dma, int, 0);
 
@@ -128,11 +126,6 @@ struct atmel_nand_host {
 
 static struct nand_ecclayout atmel_pmecc_oobinfo;
 
-static int cpu_has_dma(void)
-{
-       return cpu_is_at91sam9rl() || cpu_is_at91sam9g45();
-}
-
 /*
  * Enable NAND.
  */
@@ -1336,6 +1329,8 @@ static int atmel_of_init_port(struct atmel_nand_host *host,
 
        board->on_flash_bbt = of_get_nand_on_flash_bbt(np);
 
+       board->has_dma = of_property_read_bool(np, "atmel,nand-has-dma");
+
        if (of_get_nand_bus_width(np) == 16)
                board->bus_width_16 = 1;
 
@@ -1600,7 +1595,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
                nand_chip->bbt_options |= NAND_BBT_USE_FLASH;
        }
 
-       if (!cpu_has_dma())
+       if (!host->board.has_dma)
                use_dma = 0;
 
        if (use_dma) {