ARM: dts: sama7d65: Remove the vqmmc-supply property from the sdmmc1#57
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kay54068 wants to merge 2 commits intolinux4sam:linux-6.12-mchpfrom
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ARM: dts: sama7d65: Remove the vqmmc-supply property from the sdmmc1#57kay54068 wants to merge 2 commits intolinux4sam:linux-6.12-mchpfrom
kay54068 wants to merge 2 commits intolinux4sam:linux-6.12-mchpfrom
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…node. On the SAMA7D65 Curiosity development board, the SD CARD (SDMMC1) circuit uses SDMMC1_1V8SEL_PB30 to switch the SD card voltage. If you configure vqmmc-supply = <&vdd_3v3>;, it will force the voltage to stay at 3.3V, preventing high-speed SD cards from operating efficiently.
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Confirmed: with this regulator property, sdhci_setup_host() masks the UHS-I bus speed modes. |
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@kay54068, please advise in case you wish credits (name, email address) in the related commit message. |
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On the SAMA7D65 Curiosity development board, the SD CARD (SDMMC1) circuit uses SDMMC1_1V8SEL_PB30 to switch the SD card voltage.
If you configure vqmmc-supply = <&vdd_3v3>;, it will force the voltage to stay at 3.3V, preventing high-speed SD cards from operating efficiently.