From 47516553fb0e2ea9a0606763cf3ade3a76aed2b8 Mon Sep 17 00:00:00 2001 From: Rex-BC Chen Date: Wed, 17 Nov 2021 17:45:42 +0800 Subject: 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 Change-Id: If4c983d15beb2b588230f3db7416cb767b29978d Reviewed-on: https://review.coreboot.org/c/coreboot/+/59569 Tested-by: build bot (Jenkins) Reviewed-by: Yu-Ping Wu --- src/mainboard/google/corsola/romstage.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'src/mainboard/google') 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 +#include +#include #include +#include +#include #include +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(); } -- cgit v1.2.3