[PATCH 3/4] mrf24j40: Increase max SPI speed to 10MHz
From: Alan Ott <hidden>
Date: 2013-03-18 22:07:46
Also in:
lkml
Subsystem:
ieee 802.15.4 subsystem, mrf24j40 ieee 802.15.4 radio driver, networking drivers, the rest · Maintainers:
Alexander Aring, Stefan Schmidt, Miquel Raynal, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Upon consulting the datasheet further, it does indicates a maximum speed for SCK at 10MHz. Signed-off-by: Alan Ott <redacted> --- 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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