diff options
| author | Peter Kao <peter.kao@mediatek.com> | 2015-07-31 17:11:14 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2016-03-12 09:00:21 +0100 |
| commit | da1e02a3a0cd8de244a03cc84d5ecc9663e5e694 (patch) | |
| tree | 561d900efe1632f802de2eee84ff11d6f4465ed5 /src/soc/mediatek/mt8173/pll.c | |
| parent | b74a2eca80deed3e7d21ba1123c2b986abcfcc10 (diff) | |
mediatek/mt8173: Add EMI driver, DRAM initialization
BUG=none
TEST=emerge-oak coreboot
BRANCH=none
Change-Id: I6b05898de2d0022e0de7b18f1db3c3e9c06d8135
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: b614eeb1bba5660438c214e82225832809caca8e
Original-Change-Id: I0f7b0a426dae1548b34114a024c92befdf6002f6
Original-Signed-off-by: Peter Kao <peter.kao@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/292692
Original-Commit-Ready: Yidi Lin <yidi.lin@mediatek.com>
Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/13105
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/soc/mediatek/mt8173/pll.c')
| -rw-r--r-- | src/soc/mediatek/mt8173/pll.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8173/pll.c b/src/soc/mediatek/mt8173/pll.c index 3faf7859a7..d54538d91d 100644 --- a/src/soc/mediatek/mt8173/pll.c +++ b/src/soc/mediatek/mt8173/pll.c @@ -505,3 +505,29 @@ void mt_pll_set_aud_div(u32 rate) 7 << 28); } } + +void mt_mem_pll_config_pre(const struct mt8173_sdram_params *sdram_params) +{ + u32 mpll_sdm_pcw_20_0 = 0xF13B1; + + /* disable MPLL for adjusting memory clk frequency */ + clrbits_le32(&mt8173_apmixed->mpll_con0, BIT(0)); + /* MPLL configuration: mode selection */ + setbits_le32(&mt8173_apmixed->mpll_con0, BIT(16)); + clrbits_le32(&mt8173_apmixed->mpll_con0, 0x7 << 4); + clrbits_le32(&mt8173_apmixed->pll_test_con0, 1 << 31); + /* set RG_MPLL_SDM_PCW for feedback divide ratio */ + clrsetbits_le32(&mt8173_apmixed->mpll_con1, 0x1fffff, mpll_sdm_pcw_20_0); +} + +void mt_mem_pll_config_post(void) +{ + /* power up sequence starts: enable MPLL */ + setbits_le32(&mt8173_apmixed->mpll_con0, BIT(0)); +} + +void mt_mem_pll_mux(void) +{ + /* CLK_CFG_0 */ + mux_set_sel(&muxes[TOP_MEM_SEL], 1); /* 1: dmpll_ck */ +} |