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| author | Xi Chen <xixi.chen@mediatek.com> | 2021-03-11 17:31:27 +0800 |
|---|---|---|
| committer | Hung-Te Lin <hungte@chromium.org> | 2021-03-16 03:49:09 +0000 |
| commit | 995eed9fef467fd8c7cf76b0502dfa8da037028e (patch) | |
| tree | ffe898f5c0041941340e8e5b47c3359829734605 /src/vendorcode | |
| parent | 46d05bcc4e22cb85a1820106d17da498cd13fd17 (diff) | |
| download | coreboot-995eed9fef467fd8c7cf76b0502dfa8da037028e.tar.xz | |
vendorcode/mt8192: limit fast-k frequency count from 7 to 3
For bootup faster, fast-k elapsed time is improved by ~400ms.
Signed-off-by: Xi Chen <xixi.chen@mediatek.com>
Change-Id: Ifa945012aa66df4433fe63aab75a1e785d343d9d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51406
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/vendorcode')
| -rw-r--r-- | src/vendorcode/mediatek/mt8192/dramc/dramc_pi_main.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/src/vendorcode/mediatek/mt8192/dramc/dramc_pi_main.c b/src/vendorcode/mediatek/mt8192/dramc/dramc_pi_main.c index d0e16d492d..11345590fa 100644 --- a/src/vendorcode/mediatek/mt8192/dramc/dramc_pi_main.c +++ b/src/vendorcode/mediatek/mt8192/dramc/dramc_pi_main.c @@ -12,6 +12,7 @@ #include "dramc_pi_api.h" #include <soc/dramc_param.h> #include <soc/emi.h> +#include <types.h> DRAMC_CTX_T dram_ctx_chb; @@ -1299,6 +1300,7 @@ int Init_DRAM(DRAM_DRAM_TYPE_T dram_type, DRAM_CBT_MODE_EXTERN_T dram_cbt_mode_e DRAMC_CTX_T * p; U8 final_shu; + DRAM_DFS_FREQUENCY_TABLE_T *first_cali_freq_tbl; #ifdef DDR_INIT_TIME_PROFILING U32 CPU_Cycle; @@ -1403,11 +1405,12 @@ int Init_DRAM(DRAM_DRAM_TYPE_T dram_type, DRAM_CBT_MODE_EXTERN_T dram_cbt_mode_e // DramC & PHY init for all channels //=== First frequency ====== + first_cali_freq_tbl = &gFreqTbl[DRAM_DFS_SHUFFLE_MAX-1]; #if defined(DUMP_INIT_RG_LOG_TO_DE) vSetDFSFreqSelByTable(p, &gFreqTbl[1]); //0:3200 1:4266, 2:800, 3:1866, 4:1200, 5:2400, 6:1600 #else - vSetDFSFreqSelByTable(p, &gFreqTbl[DRAM_DFS_SHUFFLE_MAX-1]); + vSetDFSFreqSelByTable(p, first_cali_freq_tbl); //vSetDFSFreqSelByTable(p, &gFreqTbl[1]); #endif //#if (ENABLE_DRAM_SINGLE_FREQ_SELECT != 0xFF) || defined(FIRST_BRING_UP) || (__FLASH_TOOL_DA__) @@ -1509,6 +1512,16 @@ int Init_DRAM(DRAM_DRAM_TYPE_T dram_type, DRAM_CBT_MODE_EXTERN_T dram_cbt_mode_e #endif S8 u1ShuIdx; + S8 allCaliShuIdx = 0xFF; + + if (CONFIG(MEDIATEK_DRAM_DVFS_LIMIT_FREQ_CNT)) { + if (p->DRAMPinmux == PINMUX_DSC) + allCaliShuIdx = 0x61; // 3200, 2400, 1600 + else + allCaliShuIdx = 0x43; // 3200, 4266, 1600 + } + dramc_debug("all cali shu idx: 0x%x\n", allCaliShuIdx); + //#if (ENABLE_DRAM_SINGLE_FREQ_SELECT == 0xFF) if (is_dvfs_enabled()) { for (u1ShuIdx = DRAM_DFS_SHUFFLE_MAX - 2; u1ShuIdx >= DRAM_DFS_SHUFFLE_1; u1ShuIdx--) @@ -1518,6 +1531,13 @@ int Init_DRAM(DRAM_DRAM_TYPE_T dram_type, DRAM_CBT_MODE_EXTERN_T dram_cbt_mode_e continue; #endif + // ignore the calibration for shuffle which is not in allCaliShuIdx, just copy first cali shuffle data + if (!(allCaliShuIdx & BIT(u1ShuIdx))) { + // copy first calibration shuffle to this shuffle (if DVFS, need double confirm) + DramcSaveToShuffleSRAM(p, DRAM_DFS_SHUFFLE_1, gFreqTbl[u1ShuIdx].shuffleIdx); + continue; + } + vSetDFSFreqSelByTable(p, &gFreqTbl[u1ShuIdx]); #if SUPPORT_SAVE_TIME_FOR_CALIBRATION DramcSave_Time_For_Cal_Init(p); |