[PATCH 6.6 213/283] clk: qcom: gcc-sm8550: Use floor ops for SDCC RCGs

Sasha Levin
2026-02-28T18:10:07Z

From: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>

[ Upstream commit 1c06e3956054fb5a0930f07b02726b1774b6c700 ]

In line with commit a27ac3806b0a ("clk: qcom: gcc-sm8450: Use floor ops
for SDCC RCGs") done to fix issues with overclocked SD cards on SM8450
powered boards set floor clock operations for SDCC RCGs on SM8550.

This change fixes initialization of some SD cards, where the problem
is manifested by the SDHC driver:

mmc0: Card appears overclocked; req 50000000 Hz, actual 100000000 Hz
mmc0: error -110 whilst initialising SD card

Fixes: 955f2ea3b9e9 ("clk: qcom: Add GCC driver for SM8550")
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Taniya Das <taniya.das@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251124212012.3660189-2-vladimir.zapolskiy@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/clk/qcom/gcc-sm8550.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/qcom/gcc-sm8550.c b/drivers/clk/qcom/gcc-sm8550.c
index b30ece62216f7..3e5ce6fa68058 100644
--- a/drivers/clk/qcom/gcc-sm8550.c
+++ b/drivers/clk/qcom/gcc-sm8550.c
@@ -1025,7 +1025,7 @@ static struct clk_rcg2 gcc_sdcc2_apps_clk_src = {
.parent_data = gcc_parent_data_9,
.num_parents = ARRAY_SIZE(gcc_parent_data_9),
.flags = CLK_SET_RATE_PARENT,
- .ops = &clk_rcg2_shared_ops,
+ .ops = &clk_rcg2_shared_floor_ops,
},
};

@@ -1048,7 +1048,7 @@ static struct clk_rcg2 gcc_sdcc4_apps_clk_src = {
.parent_data = gcc_parent_data_0,
.num_parents = ARRAY_SIZE(gcc_parent_data_0),
.flags = CLK_SET_RATE_PARENT,
- .ops = &clk_rcg2_shared_ops,
+ .ops = &clk_rcg2_shared_floor_ops,
},
};

--
2.51.0