• Lee Jones's avatar
    dt-bindings: mmc: sdhci-st: Mention the discretionary "icn" clock · 981b1789
    Lee Jones authored
    The interconnect (ICN) clock is required for functional working of
    MMC on some ST platforms.  When not supplied it can result in
    broken MMC and the following output:
    
            [   13.916949] mmc0: Timeout waiting for hardware interrupt.
            [   13.922349] sdhci: =========== REGISTER DUMP (mmc0)===========
            [   13.928175] sdhci: Sys addr: 0x00000000 | Version:  0x00001002
            [   13.933999] sdhci: Blk size: 0x00007040 | Blk cnt:  0x00000001
            [   13.939825] sdhci: Argument: 0x00fffff0 | Trn mode: 0x00000013
            [   13.945650] sdhci: Present:  0x1fff0206 | Host ctl: 0x00000011
            [   13.951475] sdhci: Power:    0x0000000f | Blk gap:  0x00000080
            [   13.957300] sdhci: Wake-up:  0x00000000 | Clock:    0x00003f07
            [   13.963126] sdhci: Timeout:  0x00000004 | Int stat: 0x00000000
            [   13.968952] sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
            [   13.974777] sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
            [   13.980602] sdhci: Caps:     0x21ed3281 | Caps_1:   0x00000000
            [   13.986428] sdhci: Cmd:      0x0000063a | Max curr: 0x00000000
            [   13.992252] sdhci: Host ctl2: 0x00000000
            [   13.996166] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x7c048200
            [   14.001990] sdhci: ===========================================
            [   14.009802] mmc0: Got data interrupt 0x02000000 even though no data operation was in progress.
    Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
    Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
    981b1789
sdhci-st.txt 3.66 KB