Add simplified and meaningful macro for channel number.
Signed-off-by: Jagan Teki jagan@amarulasolutions.com Signed-off-by: YouMin Chen cym@rock-chips.com --- arch/arm/include/asm/arch-rockchip/sdram_common.h | 1 + drivers/ram/rockchip/sdram_rk3399.c | 3 +-- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_common.h b/arch/arm/include/asm/arch-rockchip/sdram_common.h index 83936d3679..38a8bb8642 100644 --- a/arch/arm/include/asm/arch-rockchip/sdram_common.h +++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h @@ -35,6 +35,7 @@ #define SYS_REG_ROW_3_4_MASK 1 #define SYS_REG_CHINFO_SHIFT(ch) (28 + (ch)) #define SYS_REG_ENC_DDRTYPE(n) ((n) << 13) +#define SYS_REG_ENC_NUM_CH(n) (((n) - 1) << 12) #define SYS_REG_RANK_SHIFT(ch) (11 + (ch) * 16) #define SYS_REG_RANK_MASK 1 #define SYS_REG_COL_SHIFT(ch) (9 + (ch) * 16) diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index 69c8d53314..3d2447a24e 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -1009,8 +1009,7 @@ static void dram_all_config(struct dram_info *dram, unsigned int channel, idx;
sys_reg |= SYS_REG_ENC_DDRTYPE(sdram_params->base.dramtype); - sys_reg |= (sdram_params->base.num_channels - 1) - << SYS_REG_NUM_CH_SHIFT; + sys_reg |= SYS_REG_ENC_NUM_CH(sdram_params->base.num_channels); for (channel = 0, idx = 0; (idx < sdram_params->base.num_channels) && (channel < 2); channel++) {