This is a note to let you know that I've just added the patch titled clk: qcom: ipq8074: Use floor ops for SDCC1 clock to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: clk-qcom-ipq8074-use-floor-ops-for-sdcc1-clock.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 817907cb9cb00d6e08123ce0f8a20bfed64cfb2c Author: Dirk Buchwalder <buchwalder@xxxxxxxxx> Date: Thu Feb 10 18:31:00 2022 +0100 clk: qcom: ipq8074: Use floor ops for SDCC1 clock [ Upstream commit b77d8306d84f83d1da68028a68c91da9c867b6f6 ] Use floor ops on SDCC1 APPS clock in order to round down selected clock frequency and avoid overclocking SD/eMMC cards. For example, currently HS200 cards were failling tuning as they were actually being clocked at 384MHz instead of 192MHz. This caused some boards to disable 1.8V I/O and force the eMMC into the standard HS mode (50MHz) and that appeared to work despite the eMMC being overclocked to 96Mhz in that case. There was a previous commit to use floor ops on SDCC clocks, but it looks to have only covered SDCC2 clock. Fixes: 9607f6224b39 ("clk: qcom: ipq8074: add PCIE, USB and SDCC clocks") Signed-off-by: Dirk Buchwalder <buchwalder@xxxxxxxxx> Signed-off-by: Robert Marko <robimarko@xxxxxxxxx> Reviewed-by: Stephen Boyd <sboyd@xxxxxxxxxx> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220210173100.505128-1-robimarko@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/clk/qcom/gcc-ipq8074.c b/drivers/clk/qcom/gcc-ipq8074.c index b09d99343e09..541016db3c4b 100644 --- a/drivers/clk/qcom/gcc-ipq8074.c +++ b/drivers/clk/qcom/gcc-ipq8074.c @@ -1074,7 +1074,7 @@ static struct clk_rcg2 sdcc1_apps_clk_src = { .name = "sdcc1_apps_clk_src", .parent_names = gcc_xo_gpll0_gpll2_gpll0_out_main_div2, .num_parents = 4, - .ops = &clk_rcg2_ops, + .ops = &clk_rcg2_floor_ops, }, };