Add simplified and meaningful macro for rank.
Signed-off-by: Jagan Teki <ja...@amarulasolutions.com>
Signed-off-by: YouMin Chen <c...@rock-chips.com>
---
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 d7d44749de..e2173aeeea 100644
--- a/arch/arm/include/asm/arch-rockchip/sdram_common.h
+++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h
@@ -41,6 +41,8 @@
SYS_REG_NUM_CH_SHIFT)
#define SYS_REG_RANK_SHIFT(ch) (11 + (ch) * 16)
#define SYS_REG_RANK_MASK 1
+#define SYS_REG_ENC_RANK(n, ch) (((n) - SYS_REG_RANK_MASK) << \
+ SYS_REG_RANK_SHIFT(ch))
#define SYS_REG_COL_SHIFT(ch) (9 + (ch) * 16)
#define SYS_REG_COL_MASK 3
#define SYS_REG_BK_SHIFT(ch) (8 + (ch) * 16)
diff --git a/drivers/ram/rockchip/sdram_rk3399.c
b/drivers/ram/rockchip/sdram_rk3399.c
index 7d071f998b..acc8f17491 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -1022,7 +1022,7 @@ static void dram_all_config(struct dram_info *dram,
idx++;
sys_reg |= SYS_REG_ENC_ROW_3_4(info->row_3_4, channel);
sys_reg |= SYS_REG_ENC_CHINFO(channel);
- sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(channel);
+ sys_reg |= SYS_REG_ENC_RANK(info->rank, channel);
sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(channel);
sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(channel);
sys_reg |= (info->cs0_row - 13) <<
--
2.18.0.321.gffc6fa0e3
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