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authorTristan Shieh <tristan.shieh@mediatek.com>2018-09-14 11:12:14 +0800
committerPatrick Georgi <pgeorgi@google.com>2018-10-10 12:16:43 +0000
commit022f76b0d3d571143238b0f8740b0e1d0ee99e3e (patch)
tree0c62c286730d0afbe07e1a65e356c5b56cba3160 /src
parent38dc00bed15bc70bde14209f730451861a38a393 (diff)
downloadcoreboot-022f76b0d3d571143238b0f8740b0e1d0ee99e3e.tar.xz
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>
Diffstat (limited to 'src')
-rw-r--r--src/soc/mediatek/mt8183/include/soc/pll.h1
-rw-r--r--src/soc/mediatek/mt8183/pll.c23
2 files changed, 15 insertions, 9 deletions
diff --git a/src/soc/mediatek/mt8183/include/soc/pll.h b/src/soc/mediatek/mt8183/include/soc/pll.h
index 8c0d4e3a2d..5a5f58db3b 100644
--- a/src/soc/mediatek/mt8183/include/soc/pll.h
+++ b/src/soc/mediatek/mt8183/include/soc/pll.h
@@ -255,6 +255,7 @@ enum {
TVDPLL_HZ = 594 * MHz,
APLL1_HZ = 180633600,
APLL2_HZ = 196608 * KHz,
+ MPLL_HZ = 208 * MHz,
};
/* top_div rate */
diff --git a/src/soc/mediatek/mt8183/pll.c b/src/soc/mediatek/mt8183/pll.c
index e0dd3880f3..799b6ca315 100644
--- a/src/soc/mediatek/mt8183/pll.c
+++ b/src/soc/mediatek/mt8183/pll.c
@@ -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);
}