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| author | Xi Chen <xixi.chen@mediatek.corp-partner.google.com> | 2022-08-18 11:27:18 +0800 |
|---|---|---|
| committer | Martin Roth <martin.roth@amd.corp-partner.google.com> | 2022-08-31 16:44:46 +0000 |
| commit | af4bad167d4ab07ba2d44666c878a0871d7f91cd (patch) | |
| tree | ca8071405b2eefeb199add572cb7f24231a92763 /src/soc/mediatek | |
| parent | df0396149aba5171d64b9fbab0856dc9f07b1c15 (diff) | |
| download | coreboot-af4bad167d4ab07ba2d44666c878a0871d7f91cd.tar.gz coreboot-af4bad167d4ab07ba2d44666c878a0871d7f91cd.tar.bz2 coreboot-af4bad167d4ab07ba2d44666c878a0871d7f91cd.zip | |
soc/mediatek/mt8188: Initialize DPM in ramstage
Add initialization of DPM drvier for DRAM low power mode.
DPM is an essential component on MediaTek SoC, so we initialize DPM
in soc_init().
This DPM flow adds 22ms to the boot time.
coreboot logs:
CBFS: Found 'dpm.dm' @0x156c0 size 0xfc in mcache @0xfffdd110
mtk_init_mcu: Loaded (and reset) dpm.dm in 6 msecs (422 bytes)
CBFS: Found 'dpm.pm' @0x15800 size 0x3c59 in mcache @0xfffdd140
mtk_init_mcu: Loaded (and reset) dpm.pm in 16 msecs (18910 bytes)
TEST=build pass
BUG=b:236331724
Signed-off-by: Xi Chen <xixi.chen@mediatek.corp-partner.google.com>
Change-Id: I46baa7b49e90d53dd4d1d95af9c46622faf30419
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66969
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/mediatek')
| -rw-r--r-- | src/soc/mediatek/mt8188/soc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8188/soc.c b/src/soc/mediatek/mt8188/soc.c index 5b2431bc2509..dc04e29faacc 100644 --- a/src/soc/mediatek/mt8188/soc.c +++ b/src/soc/mediatek/mt8188/soc.c @@ -1,8 +1,10 @@ /* SPDX-License-Identifier: GPL-2.0-only OR MIT */ #include <bootmem.h> +#include <console/console.h> #include <device/device.h> #include <soc/dfd.h> +#include <soc/dpm.h> #include <soc/emi.h> #include <soc/mcupm.h> #include <soc/mmu_operations.h> @@ -26,6 +28,9 @@ static void soc_init(struct device *dev) mcupm_init(); sspm_init(); + if (dpm_init()) + printk(BIOS_ERR, "dpm init failed, DVFS may not work\n"); + if (CONFIG(MTK_DFD)) dfd_init(); } |