From bd7e6086c5a1e83975fa87f7958b52c5d23881fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Heiko=20St=C3=BCbner?= <heiko@sntech.de>
Date: Sat, 18 Feb 2017 19:46:23 +0100
Subject: [PATCH] rockchip: rk3288: sdram: use constants in ddrconf table
Use defines to describe the bit shifts used to create the
table for ddrconf register values.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Simon Glass <sjg@chromium.org>
---
.../include/asm/arch-rockchip/ddr_rk3288.h | 8 ++++++++
arch/arm/mach-rockchip/rk3288/sdram_rk3288.c | 20 +++++++++----------
2 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/arch/arm/include/asm/arch-rockchip/ddr_rk3288.h b/arch/arm/include/asm/arch-rockchip/ddr_rk3288.h
index fccabcd2c03..9a59075afcf 100644
--- a/arch/arm/include/asm/arch-rockchip/ddr_rk3288.h
+++ b/arch/arm/include/asm/arch-rockchip/ddr_rk3288.h
@@ -425,6 +425,14 @@ enum {
#define START_CMD (1u << 31)
+/*
+ * DDRCONF
+ * [5:4] row(13+n)
+ * [1:0] col(9+n), assume bw=2
+ */
+#define DDRCONF_ROW_SHIFT 4
+#define DDRCONF_COL_SHIFT 0
+
/* DEVTODEV */
#define BUSWRTORD_SHIFT 4
#define BUSRDTOWR_SHIFT 2
diff --git a/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c b/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
index 89fd8e6bff1..868b96d51a2 100644
--- a/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
+++ b/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
@@ -596,16 +596,16 @@ static void dram_all_config(const struct dram_info *dram,
const int ddrconf_table[] = {
/* row col,bw */
0,
- ((1 << 4) | 1),
- ((2 << 4) | 1),
- ((3 << 4) | 1),
- ((4 << 4) | 1),
- ((1 << 4) | 2),
- ((2 << 4) | 2),
- ((3 << 4) | 2),
- ((1 << 4) | 0),
- ((2 << 4) | 0),
- ((3 << 4) | 0),
+ ((1 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT),
+ ((2 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT),
+ ((3 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT),
+ ((4 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT),
+ ((1 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT),
+ ((2 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT),
+ ((3 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT),
+ ((1 << DDRCONF_ROW_SHIFT) | 0 << DDRCONF_COL_SHIFT),
+ ((2 << DDRCONF_ROW_SHIFT) | 0 << DDRCONF_COL_SHIFT),
+ ((3 << DDRCONF_ROW_SHIFT) | 0 << DDRCONF_COL_SHIFT),
0,
0,
0,
--
GitLab