Searched hist:"4 c94cb65" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/mmc/core/ |
| H A D | mmc_ops.c | 4c94cb65 Tue Apr 09 06:05:06 CDT 2019 Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> mmc: core: retry CMD1 in mmc_send_op_cond() even if the ocr = 0
According to eMMC specification v5.1 section 6.4.3, we should issue
CMD1 repeatedly in the idle state until the eMMC is ready even if
the mmc_attach_mmc() calls this function with ocr = 0. Otherwise
some eMMC devices seems to enter the inactive mode after
mmc_init_card() issued CMD0 when the eMMC device is busy.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
4c94cb65 Tue Apr 09 06:05:06 CDT 2019 Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> mmc: core: retry CMD1 in mmc_send_op_cond() even if the ocr = 0
According to eMMC specification v5.1 section 6.4.3, we should issue
CMD1 repeatedly in the idle state until the eMMC is ready even if
the mmc_attach_mmc() calls this function with ocr = 0. Otherwise
some eMMC devices seems to enter the inactive mode after
mmc_init_card() issued CMD0 when the eMMC device is busy.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
|