Messages in this thread | | | From | Adam Ford <> | Date | Tue, 9 Oct 2018 08:38:27 -0500 | Subject | Pinmuxing and SDHC speeds on sdhci-esdhc-imx |
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I have a question regarding the pinstate and the corresponding uhs_signaling.
The uhs_signaling shows a variety of timing options,
MMC_TIMING_UHS_SDR12, MMC_TIMING_UHS_SDR25:, MMC_TIMING_UHS_SDR50, MMC_TIMING_UHS_SDR104, MMC_TIMING_MMC_HS200, MMC_TIMING_UHS_DDR50, MMC_TIMING_MMC_DDR52, MMC_TIMING_MMC_HS400, and MMC_TIMING_LEGACY
However the esdhc_change_pinstate function only lists MMC_TIMING_UHS_SDR50, MMC_TIMING_UHS_DDR50, MMC_TIMING_UHS_SDR104, MMC_TIMING_MMC_HS200, and MMC_TIMING_MMC_HS40, and a defaut.
From what I can tell, this means that MMC_TIMING_MMC_DDR52 uses the default pinmux. I am wondering if it should use pins_100mhz. We have an eMMC part that we want to operate at this point and it seems like it missing. If so, I can submit a patch.
It also seems like that SDR12, SDR25 use the default. I assume this is OK.
adam
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