Patch "clk: qcom: ipq8074: Use floor ops for SDCC1 clock" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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,
 	},
 };