diff options
| author | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2017-05-31 16:16:35 (GMT) |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2017-06-07 13:29:23 (GMT) |
| commit | fcb21585169c0bf800a143ceb1b91a323c9d1261 (patch) | |
| tree | be6a9f103133eeb11231d095c7830bb5c5793e8e /arch/arm/mach-rockchip | |
| parent | fbecb94e4b06a385adc860870ebd64e57f521b9f (diff) | |
| download | u-boot-fcb21585169c0bf800a143ceb1b91a323c9d1261.tar.xz | |
rockchip: arm64: rk3399: support DDR3-1866 (i.e. 933MHz clock)
The RK3399 is capable of driving DDR3 at 933MHz (i.e. DDR3-1866),
if the PCB layout permits and appropriate memory timings are used.
This changes the sanity checks to allow a DTS to request DDR3-1866
operation.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'arch/arm/mach-rockchip')
| -rw-r--r-- | arch/arm/mach-rockchip/rk3399/sdram_rk3399.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c b/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c index 1989578..1b91bb1 100644 --- a/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c +++ b/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c @@ -1087,7 +1087,7 @@ static int sdram_init(struct dram_info *dram, debug("Starting SDRAM initialization...\n"); - if ((dramtype == DDR3 && ddr_freq > 800) || + if ((dramtype == DDR3 && ddr_freq > 933) || (dramtype == LPDDR3 && ddr_freq > 933) || (dramtype == LPDDR4 && ddr_freq > 800)) { debug("SDRAM frequency is to high!"); |