diff options
| author | Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com> | 2021-11-17 17:45:42 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-11-26 11:22:21 +0000 |
| commit | 47516553fb0e2ea9a0606763cf3ade3a76aed2b8 (patch) | |
| tree | 7961f5e04d868e19b72519f519d1dc501016d600 /src/mainboard | |
| parent | c5e56f59486aae1ef11f8aab4da314d73ead1b8a (diff) | |
mb/google/corsola: Raise little CPU frequency
Raise little CPU to 2GHz at romstage.
TEST=check little core cpu frequency is 2GHz
BUG=b:202871018
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: If4c983d15beb2b588230f3db7416cb767b29978d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59569
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/corsola/romstage.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/mainboard/google/corsola/romstage.c b/src/mainboard/google/corsola/romstage.c index d1e9e20639..aff496b563 100644 --- a/src/mainboard/google/corsola/romstage.c +++ b/src/mainboard/google/corsola/romstage.c @@ -1,11 +1,29 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <arch/stages.h> +#include <console/console.h> +#include <delay.h> #include <soc/mt6366.h> +#include <soc/pll_common.h> +#include <soc/regulator.h> #include <soc/rtc.h> +static void raise_little_cpu_freq(void) +{ + mainboard_set_regulator_vol(MTK_REGULATOR_VPROC12, 1031250); + mainboard_set_regulator_vol(MTK_REGULATOR_VSRAM_PROC12, 1118750); + udelay(200); + mt_pll_raise_little_cpu_freq(2000 * MHz); + mt_pll_raise_cci_freq(1385 * MHz); + + printk(BIOS_INFO, "Check CPU freq: %u KHz, cci: %u KHz\n", + mt_fmeter_get_freq_khz(FMETER_ABIST, 9), + mt_fmeter_get_freq_khz(FMETER_ABIST, 7)); +} + void platform_romstage_main(void) { mt6366_init(); + raise_little_cpu_freq(); rtc_boot(); } |