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add timing fixes to erista

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Lightos1
2026-07-12 20:00:20 +02:00
parent 6309950402
commit 60cffadf8e
1 changed files with 21 additions and 6 deletions
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27
Source/Atmosphere/stratosphere/loader/source/oc/pcv/pcv_erista.cpp
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@@ -322,7 +322,18 @@ namespace ams::ldr::hoc::pcv::erista {
da_covers |= (w_cover << 16);
table->burst_mc_regs.mc_emem_arb_da_covers = da_covers;
table->burst_mc_regs.mc_emem_arb_misc0 = (table->burst_mc_regs.mc_emem_arb_misc0 & 0xFFE08000) | (table->burst_mc_regs.mc_emem_arb_timing_rc + 1);
constexpr u32 AtomsPerDvfsPulse = 0x7;
constexpr u32 McEmcSameFreq = 0x0;
/* On certain frequencies (2966, 3100, 3133 and 3200 MHz), ExpiringSoonSlackThreshold has a value of 0x12. */
/* But 0x13 is good enough for now. */
constexpr u32 ExpiringSoonSlackThreshold = 0x13;
const u32 PriorityInversionIsoThreshold = GET_CYCLE_CEIL(7.5);
constexpr u32 EmcReqB2bXfer = 0x0;
const u32 PriorityInversionThreshold = GET_CYCLE_CEIL(22.5);
const u32 Bc2aaHoldoffThreshold = table->burst_mc_regs.mc_emem_arb_timing_rc + 1;
const u32 mc_emem_arb_misc0 = (AtomsPerDvfsPulse << 28) | (McEmcSameFreq << 27) | (ExpiringSoonSlackThreshold << 21) | (PriorityInversionIsoThreshold << 16) | (EmcReqB2bXfer << 15) | (PriorityInversionThreshold << 8) | (Bc2aaHoldoffThreshold << 0);
table->burst_mc_regs.mc_emem_arb_misc0 = mc_emem_arb_misc0;
u32 mpcorer_ptsa_rate = MIN(static_cast<u32>(227), (table->rate_khz / 1600000) * 208);
table->la_scale_regs.mc_mll_mpcorer_ptsa_rate = mpcorer_ptsa_rate;
@@ -363,12 +374,16 @@ namespace ams::ldr::hoc::pcv::erista {
table->la_scale_regs.mc_latency_allowance_hc_1 = (table->la_scale_regs.mc_latency_allowance_hc_1 & Mask2) | allowance1;
table->la_scale_regs.mc_latency_allowance_vi2_0 = (table->la_scale_regs.mc_latency_allowance_vi2_0 & Mask2) | allowance1;
table->dram_timings.t_rp = tRFCpb;
table->dram_timings.t_rfc = tRFCab;
table->emc_cfg_2 = 0x11083D;
table->min_volt = std::clamp(900 + (C.emcDvbShift * 25), 900, 1050);
table->dram_timings.t_rp = tRP_values[0];
const u32 tRFCabStock = tRFC_values[0] * 2;
table->dram_timings.t_rfc = tRFCabStock;
table->emc_mrw2 = (table->emc_mrw2 & ~0xFFu) | static_cast<u32>(mrw2);
table->emc_mrw = (table->emc_mrw & ~0x70u) | 0x40; /* nWR */
table->emc_cfg_2 = 0x11083D;
table->min_volt = std::clamp(900 + (C.emcDvbShift * 25), 900, 1050);
}
/* TODO: Template this */
Result VerifyMtcTable(EristaMtcTable *tableStart, u32 expectedFreq) {
R_UNLESS(tableStart->rate_khz == expectedFreq, ldr::ResultInvalidMtcTable());