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soc/mediatek/mt8186: Add register protect control for MT6366 

Some registers of PMIC init settings are protected, so we failed to
set the correct value for init_setting. We disable protection before
setting PMIC init setting and enable it afterward.

BUG=b:216263707
TEST=PMIC setting value is set correctly.

Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I94d73d9c8a137444988e65c3709d29a3a4c03c5b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61390
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Rex-BC Chen 2022-01-25 18:57:40 +08:00 committed by Hung-Te Lin
parent 730107e6c1
commit fb6d6a9333
1 changed files with 12 additions and 5 deletions
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17
src/soc/mediatek/mt8186/mt6366.c
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@ -420,6 +420,12 @@ static const int vddq_votrim[] = {
80000, 70000, 60000, 50000, 40000, 30000, 20000, 10000,
};
static void mt6366_protect_control(bool en_protect)
{
/* Write a magic number 0x9CA7 to disable protection */
pwrap_write_field(PMIC_TOP_TMA_KEY, en_protect ? 0 : 0x9CA7, 0xFFFF, 0);
}
static u32 pmic_read_efuse(int i)
{
u32 efuse_data = 0;
@ -591,9 +597,9 @@ static void pmic_set_vddq_vol(u32 vddq_uv)
assert(cali_trim < ARRAY_SIZE(vddq_votrim));
}
pwrap_write_field(PMIC_TOP_TMA_KEY, 0x9CA7, 0xFFFF, 0);
mt6366_protect_control(false);
pwrap_write_field(PMIC_VDDQ_ELR_0, cali_trim, 0xF, 0);
pwrap_write_field(PMIC_TOP_TMA_KEY, 0, 0xFFFF, 0);
mt6366_protect_control(true);
udelay(1);
}
@ -779,10 +785,12 @@ static void pmic_wdt_set(void)
static void mt6366_init_setting(void)
{
mt6366_protect_control(false);
for (size_t i = 0; i < ARRAY_SIZE(init_setting); i++)
pwrap_write_field(
init_setting[i].addr, init_setting[i].val,
init_setting[i].mask, init_setting[i].shift);
mt6366_protect_control(true);
}
static void wk_sleep_voltage_by_ddr(void)
@ -793,11 +801,10 @@ static void wk_sleep_voltage_by_ddr(void)
static void wk_power_down_seq(void)
{
/* Write TMA KEY with magic number */
pwrap_write_field(PMIC_TOP_TMA_KEY, 0x9CA7, 0xFFFF, 0);
mt6366_protect_control(false);
/* Set VPROC12 sequence to VA12 */
pwrap_write_field(PMIC_CPSDSA4, 0xA, 0x1F, 0);
pwrap_write_field(PMIC_TOP_TMA_KEY, 0x0, 0xFFFF, 0);
mt6366_protect_control(true);
}
static void mt6366_lp_setting(void)