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rockchip: rk3288: sdram: use constants in ddrconf table

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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>
This commit is contained in:
Heiko Stübner 2017-02-18 19:46:23 +01:00 • committed by Simon Glass
parent 6496498a62
commit bd7e6086c5
2 changed files with 18 additions and 10 deletions
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8
arch/arm/include/asm/arch-rockchip/ddr_rk3288.h
View file

@ -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

20
arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
View file

@ -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,