[U-Boot] [PATCH v3 02/57] ram: rk3399: Add channel number encoder macro

[Jagan Teki]

Add simplified and meaningful macro for channel number.

Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
Signed-off-by: YouMin Chen <cym at 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 92a4c485c2..076afe2ae3 100644
--- a/arch/arm/include/asm/arch-rockchip/sdram_common.h
+++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h
@@ -73,6 +73,8 @@ struct sdram_base_params {
 #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 f58836c037..830311ffa9 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -1077,7 +1077,7 @@ 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