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tornado/fw/mmc-hw.c (mmc_activate): allow card to "pre-charge" (Ben needs this)
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@ -104,10 +104,14 @@ void mmc_activate(void)
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SET(MMC_nCS);
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SET(MMC_nCS);
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CLR(MMC_CLK);
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CLR(MMC_CLK);
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OUT(MMC_nCS);
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OUT(MMC_nCS);
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SET(MMC_MOSI);
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SET(MMC_CLK); /* for pre-charging */
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OUT(MMC_MOSI);
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OUT(MMC_MOSI);
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OUT(MMC_CLK);
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OUT(MMC_CLK);
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IN(MMC_MISO);
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IN(MMC_MISO);
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_delay_ms(100); /* allow card to pre-charge, to limit inrush current */
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CLR(CARD_nPWR);
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CLR(CARD_nPWR);
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_delay_ms(10);
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_delay_ms(10);
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