]> git.itanic.dy.fi Git - linux-stable/commit
mmc: core: sdio: hold retuning if sdio in 1-bit mode
authorHaibo Chen <haibo.chen@nxp.com>
Wed, 30 Aug 2023 09:39:22 +0000 (17:39 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 25 Oct 2023 09:53:24 +0000 (11:53 +0200)
commit894b678d865b374fe95cf95b29e15e3edee2d7df
tree7bea9eb65065751c29eca84bc915f4d091e937a9
parent37ae7c493a0767a614795521eeaab3ca5f33a60d
mmc: core: sdio: hold retuning if sdio in 1-bit mode

commit 32a9cdb8869dc111a0c96cf8e1762be9684af15b upstream.

tuning only support in 4-bit mode or 8 bit mode, so in 1-bit mode,
need to hold retuning.

Find this issue when use manual tuning method on imx93. When system
resume back, SDIO WIFI try to switch back to 4 bit mode, first will
trigger retuning, and all tuning command failed.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: dfa13ebbe334 ("mmc: host: Add facility to support re-tuning")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230830093922.3095850-1-haibo.chen@nxp.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/mmc/core/sdio.c