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206c10f333
Use 204 MHz as host clock in SDR104 mode instead of 136 MHz. Due to this, also change the frequency init divider so the initialization frequency is below 400 kHz. This makes the clocks for SDMMC1 in all modes to match the TRM table. Make it clear in the code that HS200/HS400 modes in fact use PLLP_OUT0 and not PLLC4_OUT2_LJ like the comment suggest. In fact selecting the PLLC4_OUT2_LJ as clock source results in freeze after switching to HS200/HS400 mode. This is most likely related to the PLLC4 not being enabled, but it should be checked later. Set the HS200/HS400 divider to 3, as this is what the code really did set prior to this change - so this commit does not change that. Configure Legacy 12 MHz clock to run at 12 MHz using the SW default configuration (as per TRM) for the SDMMC legacy timer. Introduce initial version of sdmmc_host_clock_delay() in order to use it in places where the wait is host clock dependent. The way it is implemented now does not change the sleep that was used instead. |
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