On Fri, Sep 15, 2017 at 04:35:24PM -0700, Bjorn Andersson wrote: > The delay circuit used to support HS400 is calibrated based on two > additional clocks. When these clocks are not available and > FF_CLK_SW_RST_DIS is not set in CORE_HC_MODE, reset might fail. But on > some platforms this doesn't work properly and below dump can be seen in > the kernel log. > > mmc0: Reset 0x1 never completed. > mmc0: sdhci: ============ SDHCI REGISTER DUMP =========== > mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00001102 > mmc0: sdhci: Blk size: 0x00004000 | Blk cnt: 0x00000000 > mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000000 > mmc0: sdhci: Present: 0x01f80000 | Host ctl: 0x00000000 > mmc0: sdhci: Power: 0x00000000 | Blk gap: 0x00000000 > mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x00000002 > mmc0: sdhci: Timeout: 0x00000000 | Int stat: 0x00000000 > mmc0: sdhci: Int enab: 0x00000000 | Sig enab: 0x00000000 > mmc0: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000 > mmc0: sdhci: Caps: 0x742dc8b2 | Caps_1: 0x00008007 > mmc0: sdhci: Cmd: 0x00000000 | Max curr: 0x00000000 > mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x00000000 > mmc0: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000 > mmc0: sdhci: Host ctl2: 0x00000000 > mmc0: sdhci: ============================================ > > Add support for the additional calibration clocks to allow these > platforms to be configured appropriately. > > Cc: Venkat Gopalakrishnan <venkatg@xxxxxxxxxxxxxx> > Cc: Ritesh Harjani <riteshh@xxxxxxxxxxxxxx> > Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> > --- > > Changes since v1: > - Add new clocks to DT binding > > Documentation/devicetree/bindings/mmc/sdhci-msm.txt | 2 ++ Acked-by: Rob Herring <robh@xxxxxxxxxx> > drivers/mmc/host/sdhci-msm.c | 12 +++++++++++- > 2 files changed, 13 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
