diff options
| author | Shunqian Zheng <zhengsq@rock-chips.com> | 2016-05-11 15:18:17 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-06-07 16:14:05 +0200 |
| commit | 0d9839b3334d7769e1d89ebc68e01d91e5672c74 (patch) | |
| tree | fed211c666724d2e53c90328d295fd246b2c4f12 /src/soc | |
| parent | 6724b1b6b46f7fbc21d80511177fca6080067d69 (diff) | |
rockchip: gru: update the hynix lpddr3 config to run at 928MHz
Update the DDR config and DRAM driver to allow running at up to
928MHz. Kevin config/clock rate are not being changed, but Gru now
runs at 928 MHz.
BRANCH=none
BUG=chrome-os-partner:51537
TEST=booted Kevin and Gru to Linux prompt. Ran stressapptest for 10 min on Gru,
Change-Id: I66c1a171d5c7d05b2878c7bc5eaa0d436c7a1be2
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 8baf0d82816a7ea1c4428e15caeefa2795d001f9
Original-Change-Id: I5e1d6d1025f10203da8f11afc3bbdf95f133c586
Original-Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/343984
Original-Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-on: https://review.coreboot.org/15027
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/rockchip/rk3399/clock.c | 4 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3399/sdram.c | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/src/soc/rockchip/rk3399/clock.c b/src/soc/rockchip/rk3399/clock.c index 6222b77730..ba66230e23 100644 --- a/src/soc/rockchip/rk3399/clock.c +++ b/src/soc/rockchip/rk3399/clock.c @@ -549,6 +549,10 @@ void rkclk_configure_ddr(unsigned int hz) dpll_cfg = (struct pll_div) {.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1}; break; + case 928*MHz: + dpll_cfg = (struct pll_div) + {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1}; + break; default: die("Unsupported SDRAM frequency, add to clock.c!"); } diff --git a/src/soc/rockchip/rk3399/sdram.c b/src/soc/rockchip/rk3399/sdram.c index 83c0ee6255..1536910e2c 100644 --- a/src/soc/rockchip/rk3399/sdram.c +++ b/src/soc/rockchip/rk3399/sdram.c @@ -819,7 +819,7 @@ void sdram_init(const struct rk3399_sdram_params *sdram_params) if ((sdram_params->dramtype == DDR3 && sdram_params->ddr_freq > 800*MHz) || (sdram_params->dramtype == LPDDR3 - && sdram_params->ddr_freq > 800*MHz) || + && sdram_params->ddr_freq > 928*MHz) || (sdram_params->dramtype == LPDDR4 && sdram_params->ddr_freq > 800*MHz)) die("SDRAM frequency is to high!"); |