]> git.ipfire.org Git - thirdparty/kernel/stable.git/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 10:03:13 +0000 (12:03 +0200)
commit85664ad23f8b5b31c8f5f16e7f70b5b6602854a5
tree02561e45f723fd14e30f23e479c127e06c0e0dad
parentaaa476a7ad50a1ba3d4db5ed34d7442af51256ec
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