Align the SSP clock speed with oscilator to achieve higher transfer stability.
Signed-off-by: Marek Vasut marex@denx.de Cc: Fabio Estevam festevam@gmail.com Cc: Otavio Salvador otavio@ossystems.com.br Cc: Stefano Babic sbabic@denx.de --- board/denx/m28evk/m28evk.c | 4 ++-- include/configs/m28evk.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/board/denx/m28evk/m28evk.c b/board/denx/m28evk/m28evk.c index 74da3ea..255c139 100644 --- a/board/denx/m28evk/m28evk.c +++ b/board/denx/m28evk/m28evk.c @@ -49,8 +49,8 @@ int board_early_init_f(void)
/* SSP0 clock at 96MHz */ mx28_set_sspclk(MXC_SSPCLK0, 96000, 0); - /* SSP2 clock at 96MHz */ - mx28_set_sspclk(MXC_SSPCLK2, 96000, 0); + /* SSP2 clock at 160MHz */ + mx28_set_sspclk(MXC_SSPCLK2, 160000, 0);
#ifdef CONFIG_CMD_USB mxs_iomux_setup_pad(MX28_PAD_SSP2_SS1__USB1_OVERCURRENT); diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h index b3ac316..2b16d69 100644 --- a/include/configs/m28evk.h +++ b/include/configs/m28evk.h @@ -255,11 +255,11 @@ #define CONFIG_SPI_FLASH_STMICRO #define CONFIG_SF_DEFAULT_CS 2 #define CONFIG_SF_DEFAULT_MODE SPI_MODE_0 -#define CONFIG_SF_DEFAULT_SPEED 24000000 +#define CONFIG_SF_DEFAULT_SPEED 40000000
#define CONFIG_ENV_SPI_CS 0 #define CONFIG_ENV_SPI_BUS 2 -#define CONFIG_ENV_SPI_MAX_HZ 24000000 +#define CONFIG_ENV_SPI_MAX_HZ 40000000 #define CONFIG_ENV_SPI_MODE SPI_MODE_0 #endif #endif