diff options
| author | Haibo Chen <haibo.chen@nxp.com> | 2021-03-03 12:05:46 +0300 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2021-04-09 00:44:40 +0300 |
| commit | 63756575b42b8b4fb3f59cbbf0cedf03331bc2d2 (patch) | |
| tree | 588f99ca8cff444255aad60793e42b082e8c5e27 /include/fsl_esdhc_imx.h | |
| parent | dec7755c442ff84358704a5566e4ae908afecf13 (diff) | |
| download | u-boot-63756575b42b8b4fb3f59cbbf0cedf03331bc2d2.tar.xz | |
mmc: fsl_esdhc_imx: use VENDORSPEC_FRC_SDCLK_ON to control card clock output
For FSL_USDHC, it do not implement VENDORSPEC_CKEN/PEREN/HCKEN/IPGEN, these
are reserved bits. Instead, use VENDORSPEC_FRC_SDCLK_ON to gate on/off the
card clock output.
After commit b5874b552ffa ("mmc: fsl_esdhc_imx: add wait_dat0() support"),
we meet SD3.0 card can't work at UHS mode, mmc_switch_voltage() fail because
the second mmc_wait_dat0 return -ETIMEDOUT. According to SD spec, during
voltage switch, need to gate off/on the card clock. If not set the FRC_SDCLK_ON,
after CMD11, hardware will gate off the card clock automatically, so card do
not detect the clock off/on behavior, so will draw the data0 line low until
next command.
Fixes: b5874b552ffa ("mmc: fsl_esdhc_imx: add wait_dat0() support")
Tested-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Diffstat (limited to 'include/fsl_esdhc_imx.h')
| -rw-r--r-- | include/fsl_esdhc_imx.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/fsl_esdhc_imx.h b/include/fsl_esdhc_imx.h index 45ed635a77..b092034464 100644 --- a/include/fsl_esdhc_imx.h +++ b/include/fsl_esdhc_imx.h @@ -39,6 +39,7 @@ #define VENDORSPEC_HCKEN 0x00001000 #define VENDORSPEC_IPGEN 0x00000800 #define VENDORSPEC_INIT 0x20007809 +#define VENDORSPEC_FRC_SDCLK_ON 0x00000100 #define IRQSTAT 0x0002e030 #define IRQSTAT_DMAE (0x10000000) @@ -96,6 +97,7 @@ #define PRSSTAT_CINS (0x00010000) #define PRSSTAT_BREN (0x00000800) #define PRSSTAT_BWEN (0x00000400) +#define PRSSTAT_SDOFF (0x00000080) #define PRSSTAT_SDSTB (0X00000008) #define PRSSTAT_DLA (0x00000004) #define PRSSTAT_CICHB (0x00000002) |