[PATCH 3/4] mrf24j40: Increase max SPI speed to 10MHz

From: Alan Ott
Date: Mon Mar 18 2013 - 18:07:47 EST


Upon consulting the datasheet further, it does indicates a maximum speed
for SCK at 10MHz.

Signed-off-by: Alan Ott <alan@xxxxxxxxxxx>
---
drivers/net/ieee802154/mrf24j40.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index 582c0a3..b4f9b67 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -92,9 +92,8 @@ struct mrf24j40 {
#define MRF24J40_READLONG(reg) (1 << 15 | (reg) << 5)
#define MRF24J40_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4)

-/* Maximum speed to run the device at. TODO: Get the real max value from
- * someone at Microchip since it isn't in the datasheet. */
-#define MAX_SPI_SPEED_HZ 1000000
+/* The datasheet indicates the theoretical maximum for SCK to be 10MHz */
+#define MAX_SPI_SPEED_HZ 10000000

#define printdev(X) (&X->spi->dev)

--
1.7.11.2

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