cros_bundle_firmware: Add support for exynos memory frequency
Support the 'f' machine parameter so that the memory frequency can be
controlled from the fdt.
BUG=chromium-os:31121
BRANCH=none
TEST=manual
Change memory controller node in U-Boot's cros5250-common.dts to use a
clock-frequency of 533MHz instead of 800MHz.
dmc@10C00000 {
mem-interleave-size = <0x1f>;
mem-type = "ddr3";
clock-frequency = <533000000>;
arm-frequency = <1700000000>;
};
boot on snow with the SPL code manually changed to print the speed, and see
that it is 533MHz. Unfortunately the normal boot message gives a warning:
U-Boot 2011.12-02475-g0e7346a-dirty (Sep 14 2012 - 11:31:21) for SMDK5250
CPU: S5PC520 @ 1700MHz
I2C: ready
DRAM: 2 GiB Elpida DDR3 @ 800MHz (Warning: 533MHz requested)
MMC: S5P MSHC0: 0, S5P MSHC1: 1
Using default environment
Change-Id: Ifbc5e2598c1987eac7903a22aa43a14b241a5e51
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/33336
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed
