]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
clk: sunxi-ng: a100: enable MMC clock reparenting
authorCody Eksal <masterr3c0rd@epochal.quest>
Sat, 9 Nov 2024 00:37:37 +0000 (20:37 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 21 Feb 2025 12:49:41 +0000 (13:49 +0100)
commit60a2399ccef4174df696478becf8490678c9f2ac
treef33ef3802600672f0de19bf793921d419897deb9
parent7a589441733267fb079969709574476e7c3d0b60
clk: sunxi-ng: a100: enable MMC clock reparenting

commit 16414720045de30945b8d14b7907e0cbf81a4b49 upstream.

While testing the MMC nodes proposed in [1], it was noted that mmc0/1
would fail to initialize, with "mmc: fatal err update clk timeout" in
the kernel logs. A closer look at the clock definitions showed that the MMC
MPs had the "CLK_SET_RATE_NO_REPARENT" flag set. No reason was given for
adding this flag in the first place, and its original purpose is unknown,
but it doesn't seem to make sense and results in severe limitations to MMC
speeds. Thus, remove this flag from the 3 MMC MPs.

[1] https://msgid.link/20241024170540.2721307-10-masterr3c0rd@epochal.quest

Fixes: fb038ce4db55 ("clk: sunxi-ng: add support for the Allwinner A100 CCU")
Cc: stable@vger.kernel.org
Signed-off-by: Cody Eksal <masterr3c0rd@epochal.quest>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://patch.msgid.link/20241109003739.3440904-1-masterr3c0rd@epochal.quest
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/clk/sunxi-ng/ccu-sun50i-a100.c