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rockchip/rk3399: rockchip: gru/kevin: support sdram 933MHz on kevin

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We should be running faster.  Faster = better.

BRANCH=None
BUG=chrome-os-partner:54873
TEST=Boot; stressapptest -M 1028 -s 10000

Change-Id: Iec9343763c1a5a5344959b6e8c4dee8079cf8a20
Signed-off-by: Lin Huang <hl@rock-chips.com>
Reviewed-on: https://chromium-review.googlesource.com/362822
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Lin Huang 2016-07-25 10:06:09 +08:00 • committed by chrome-bot
commit 51bfd2abb1
4 changed files with 1560 additions and 4 deletions
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8
src/mainboard/google/gru/sdram_configs.c
View file

@ -35,6 +35,9 @@ static struct rk3399_sdram_params sdram_configs[] = {
/* 800MHz, disable odt */
#include "sdram_inf/sdram-lpddr3-hynix-4GB-800-no-odt.inc"
/* 933MHz, enable odt 120o */
#include "sdram_inf/sdram-lpddr3-hynix-4GB-933.inc"
};
enum dram_speeds {
@ -43,6 +46,7 @@ enum dram_speeds {
dram_800MHz = 2,
dram_666MHz_NO_ODT = 3,
dram_800MHz_NO_ODT = 4,
dram_933MHz = 5,
};
static enum dram_speeds get_sdram_index(void)
@ -59,8 +63,10 @@ static enum dram_speeds get_sdram_index(void)
return dram_200MHz;
case 3:
return dram_666MHz_NO_ODT;
default:
case 4:
return dram_800MHz;
default:
return dram_933MHz;
}
if (IS_ENABLED(CONFIG_BOARD_GOOGLE_GRU))

1550
src/mainboard/google/gru/sdram_inf/sdram-lpddr3-hynix-4GB-933.inc Normal file
View file

File diff suppressed because it is too large Load diff

4
src/soc/rockchip/rk3399/clock.c
View file

@ -556,9 +556,9 @@ void rkclk_configure_ddr(unsigned int hz)
dpll_cfg = (struct pll_div)
{.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1};
break;
case 928*MHz:
case 933*MHz:
dpll_cfg = (struct pll_div)
{.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1};
{.refdiv = 3, .fbdiv = 350, .postdiv1 = 3, .postdiv2 = 1};
break;
default:
die("Unsupported SDRAM frequency, add to clock.c!");

2
src/soc/rockchip/rk3399/sdram.c
View file

@ -992,7 +992,7 @@ void sdram_init(const struct rk3399_sdram_params *sdram_params)
printk(BIOS_INFO, "Starting SDRAM initialization...\n");
if ((dramtype == DDR3 && ddr_freq > 800*MHz) ||
(dramtype == LPDDR3 && ddr_freq > 928*MHz) ||
(dramtype == LPDDR3 && ddr_freq > 933*MHz) ||
(dramtype == LPDDR4 && ddr_freq > 800*MHz))
die("SDRAM frequency is to high!");