On Fri, Oct 14, 2016 at 8:49 AM, Chris Packham judge.packham@gmail.com wrote:
Set the appropriate bits in the interface config register based on the SPI_ mode flags.
Signed-off-by: Chris Packham judge.packham@gmail.com
arch/arm/include/asm/arch-mvebu/spi.h | 4 ++++ drivers/spi/kirkwood_spi.c | 13 +++++++++++++ 2 files changed, 17 insertions(+)
diff --git a/arch/arm/include/asm/arch-mvebu/spi.h b/arch/arm/include/asm/arch-mvebu/spi.h index 78869a253d1f..3545aed17347 100644 --- a/arch/arm/include/asm/arch-mvebu/spi.h +++ b/arch/arm/include/asm/arch-mvebu/spi.h @@ -52,6 +52,10 @@ struct kwspi_registers { #define KWSPI_ADRLEN_3BYTE (2 << 8) #define KWSPI_ADRLEN_4BYTE (3 << 8) #define KWSPI_ADRLEN_MASK (3 << 8) +#define KWSPI_CPOL (1 << 11) +#define KWSPI_CPHA (1 << 12) +#define KWSPI_TXLSBF (1 << 13) +#define KWSPI_RXLSBF (1 << 14)
#define KWSPI_IRQUNMASK 1 /* unmask SPI interrupt */ #define KWSPI_IRQMASK 0 /* mask SPI interrupt */ diff --git a/drivers/spi/kirkwood_spi.c b/drivers/spi/kirkwood_spi.c index 6851ba942f51..69a0be9ea5b2 100644 --- a/drivers/spi/kirkwood_spi.c +++ b/drivers/spi/kirkwood_spi.c @@ -271,6 +271,19 @@ static int mvebu_spi_set_speed(struct udevice *bus, uint hz)
static int mvebu_spi_set_mode(struct udevice *bus, uint mode) {
struct mvebu_spi_platdata *plat = dev_get_platdata(bus);struct kwspi_registers *reg = plat->spireg;u32 data = readl(®->cfg);
Better to clear the bits(mask) on data before updating,
thanks!