Add simplified and meaningful macro for channel number. Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: YouMin Chen <cym@xxxxxxxxxxxxxx> --- arch/arm/include/asm/arch-rockchip/sdram_common.h | 2 ++ drivers/ram/rockchip/sdram_rk3399.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm/include/asm/arch-rockchip/sdram_common.h b/arch/arm/include/asm/arch-rockchip/sdram_common.h index ce1b62982c..a565f8d045 100644 --- a/arch/arm/include/asm/arch-rockchip/sdram_common.h +++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h @@ -35,6 +35,8 @@ #define SYS_REG_ROW_3_4_MASK 1 #define SYS_REG_CHINFO_SHIFT(ch) (28 + (ch)) #define SYS_REG_ENC_DDRTYPE(n) ((n) << SYS_REG_DDRTYPE_SHIFT) +#define SYS_REG_ENC_NUM_CH(n) (((n) - SYS_REG_NUM_CH_MASK) << \ + SYS_REG_NUM_CH_SHIFT) #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 28178f4ee9..ad2d03729d 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -1008,7 +1008,7 @@ static void dram_all_config(struct dram_info *dram, unsigned int channel, idx; sys_reg |= SYS_REG_ENC_DDRTYPE(params->base.dramtype); - sys_reg |= (params->base.num_channels - 1) << SYS_REG_NUM_CH_SHIFT; + sys_reg |= SYS_REG_ENC_NUM_CH(params->base.num_channels); for (channel = 0, idx = 0; (idx < params->base.num_channels) && (channel < 2); -- 2.18.0.321.gffc6fa0e3 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
