我现在的配置如下，理论上应该没有问题，但是插入SD卡还是没法反应，请各位大佬指点一下！！！
;-------------------------------------------------------------------------------
; mmc configuration
;
; Config Guide
; sdc_used: 1-enable card, 0-disable card
; sdc_detmode: card detect mode
; 1-detect card by gpio polling
; 2-detect card by gpio irq(must use IO with irq function)
; 3-no detect, always in for boot card
; 4-manually insert and remove by /proc/driver/sunxi-mmc.x/insert
; sdc_buswidth: card bus width, 1-1bit, 4-4bit, 8-8bit
; sdc_use_wp: 1-with write protect IO, 0-no write protect IO
; sdc_isio: for sdio card
; sdc_regulator: power control.if card supports UHS-I/DDR and HS200 timing for
; SD3.0 or eMMC4.5, regulator must be configured. the value is
; the ldo name of AXP221, eg: sdc_regulator = "axp22_eldo2"
; other: GPIO Mapping configuration
;
; Note:
; 1 if detmode=2, sdc_det's config=6
; else if detmode=1, sdc_det's config=0
; else sdc_det IO is not necessary
; 2 if the customer wants to support UHS-I and HS200 features, he must provide
; an independent power supply for the card. This is only used in platforms
; that supports SD3.0 cards and eMMC4.4+ flashes
;-------------------------------------------------------------------------------
[mmc0_para]
sdc_used = 1
sdc_detmode = 1 ===============》这里检测模式的1/3我都试过了
sdc_buswidth = 4
sdc_d1 = port:PF00<2><1><2><default>
sdc_d0 = port:PF01<2><1><2><default>
sdc_clk = port:PF02<2><1><2><default>
sdc_cmd = port:PF03<2><1><2><default>
sdc_d3 = port:PF04<2><1><2><default>
sdc_d2 = port:PF05<2><1><2><default>
;sdc_det = port:PL05<4><1><2><default>
;add
sdc_power_supply = "axp22_dcdc1"
sdc_use_wp = 0
sdc_wp =
sdc_isio = 0
sdc_regulator = "none"
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