Thanks for quickly work this out, it works fine by testing until now,
and it perfactly make the system work better in single core platform.
Tested-by: Ziyuan Xu <xzy.xu@xxxxxxxxxxxxxx>
On 2019/2/27 上午11:36, Shawn Lin wrote:
DesignWare MMC controler lacks proper hardware wait
busy support, so the software must check the busy
state if the following tranfser need use data line.
And dw_mci_wait_while_busy() now use busy check mostly
with host's lock hold, and we can't relinguish CPU
at this moment, which makes it rather painful when used
in low-end platform. To solve this, Rockchip invent
a new hardware unbusy interrupt module, which could
generate interrupt if the state machine runs from
busy state into idle state.
Shawn Lin (3):
mmc: dw_mmc: Check busy state in dw_mci_request()
mmc: dw_mmc: Add hardware unbusy interrupt support
mmc: dw_mmc-rockchip: Enable hardware unbusy interrupt support
drivers/mmc/host/dw_mmc-rockchip.c | 30 +++++++++++++++++++
drivers/mmc/host/dw_mmc.c | 60 +++++++++++++++++++++++++++++++++++++-
drivers/mmc/host/dw_mmc.h | 6 ++++
3 files changed, 95 insertions(+), 1 deletion(-)
--
Ziyuan Xu
