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mediatek/mt8183: Init PLLs for DRAM 

Set up DRAM related PLLs.
And update post divider table to fulfill all freqency settings.

BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Kukui

Change-Id: Ic197cef7d31f75ffe4e7d9e73c9cc544719943ab
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Reviewed-on: https://review.coreboot.org/28667
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Joel Kitching <kitching@google.com>
This commit is contained in:
Tristan Shieh 2018-09-14 11:12:14 +08:00 committed by Patrick Georgi
parent 38dc00bed1
commit 022f76b0d3
2 changed files with 15 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/soc/mediatek/mt8183/include/soc/pll.h
View File

@ -255,6 +255,7 @@ enum {
TVDPLL_HZ = 594 * MHz,
APLL1_HZ = 180633600,
APLL2_HZ = 196608 * KHz,
MPLL_HZ = 208 * MHz,
};
/* top_div rate */

23
src/soc/mediatek/mt8183/pll.c
View File

@ -208,15 +208,16 @@ enum pll_id {
APMIXED_TVDPLL,
APMIXED_APLL1,
APMIXED_APLL2,
APMIXED_NR_PLL
APMIXED_MPLL,
APMIXED_PLL_MAX
};
const u32 pll_div_rate[] = {
3800UL * MHz,
1248 * MHz,
624 * MHz,
384 * MHz,
200 * MHz,
1900 * MHz,
950 * MHz,
475 * MHz,
237500 * KHz,
0,
};
@ -254,6 +255,9 @@ static const struct pll plls[] = {
PLL(APMIXED_APLL2, apll2_con0, apll2_pwr_con0,
NO_RSTB_SHIFT, 32, apll2_con0, 1, apll2_con1, 0,
pll_div_rate),
PLL(APMIXED_MPLL, mpll_con0, mpll_pwr_con0,
NO_RSTB_SHIFT, 22, mpll_con1, 24, mpll_con1, 0,
pll_div_rate),
};
struct rate {
@ -273,6 +277,7 @@ static const struct rate rates[] = {
{ .id = APMIXED_TVDPLL, .rate = TVDPLL_HZ },
{ .id = APMIXED_APLL1, .rate = APLL1_HZ },
{ .id = APMIXED_APLL2, .rate = APLL2_HZ },
{ .id = APMIXED_MPLL, .rate = MPLL_HZ },
};
void pll_set_pcw_change(const struct pll *pll)
@ -291,13 +296,13 @@ void mt_pll_init(void)
setbits_le32(&mtk_apmixed->ap_pll_con0, 0x2);
/* xPLL PWR ON */
for (i = 0; i < APMIXED_NR_PLL; i++)
for (i = 0; i < APMIXED_PLL_MAX; i++)
setbits_le32(plls[i].pwr_reg, PLL_PWR_ON);
udelay(PLL_PWR_ON_DELAY);
/* xPLL ISO Disable */
for (i = 0; i < APMIXED_NR_PLL; i++)
for (i = 0; i < APMIXED_PLL_MAX; i++)
clrbits_le32(plls[i].pwr_reg, PLL_ISO);
udelay(PLL_ISO_DELAY);
@ -313,14 +318,14 @@ void mt_pll_init(void)
read32(&mtk_apmixed->apll2_con1) + 1);
/* xPLL Frequency Enable */
for (i = 0; i < APMIXED_NR_PLL; i++)
for (i = 0; i < APMIXED_PLL_MAX; i++)
setbits_le32(plls[i].reg, PLL_EN);
/* wait for PLL stable */
udelay(PLL_EN_DELAY);
/* xPLL DIV RSTB */
for (i = 0; i < APMIXED_NR_PLL; i++) {
for (i = 0; i < APMIXED_PLL_MAX; i++) {
if (plls[i].rstb_shift != NO_RSTB_SHIFT)
setbits_le32(plls[i].reg, 1 << plls[i].rstb_shift);
}