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Opened 23 months ago

#22072 new defect

Issue with MMC MOD on brcm47xx legacy branch.

Reported by: gooolash@… Owned by: developers
Priority: normal Milestone: Designated Driver (Trunk)
Component: base system Version: Chaos Calmer 15.05
Keywords: MMC MOD on brcm47xx Cc:

Description

I own WRT54GL wit 16MB Flash & 64MB RAM.
While running newer OPENWRT versions (BB & CC), MMC MOD does not work.

Here's how dmesg log used to look before legacy branch (AA):

[35947.072000] gpio-mmc: Failed to request mmc_spi module.
[35947.096000] mmc_spi spi32766.0: ASSUMING 3.2-3.4 V slot power
[35947.104000] mmc_spi spi32766.0: SD/MMC host mmc0, no DMA, no WP, no poweroff
[35947.112000] gpio-mmc: MMC-Card "default" attached to GPIO pins di=2, do=4, clk=3, cs=7
[35947.156000] mmc_spi spi32766.0: setup: unsupported mode bits 4
[35947.164000] mmc_spi spi32766.0: can't change chip-select polarity
[35947.508000] mmc0: host does not support reading read-only switch. assuming write-enable.
[35947.516000] mmc0: new SD card on SPI
[35947.540000] mmcblk0: mmc0:0000 SMI 1.87 GiB
[35947.904000] mmcblk0: p1

Here's what it looks now (both BB & CC):

[127.730000] gpio-mmc: Failed to request mmc_spi module.
[127.740000] spi-gpio: probe of spi-gpio.0 failed with error -16
[127.740000] gpio-mmc: MMC-Card "default" attached to GPIO pins di=2, do=4, clk

There is one file missing in the BB & CC distributions of brcm47xx legacy branch, /etc/modules.d/30-b43, which is vital to perform MMC Mod on brcm47xx.

There are two similar ones:
/etc/modules.d/b43
/etc/modules.d/b43legacy
However modifying them does not help.
Manually adding the 30-b43 file does not help either.

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