mmc: host: renesas_sdhi: Fix the actual clock

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[ Upstream commit 9c174e4dac ]

Wrong actual clock reported, if the SD clock division ratio is other
than 1:1(bits DIV[7:0] in SD_CLK_CTRL are set to 11111111).

On high speed mode, cat /sys/kernel/debug/mmc1/ios
Without the patch:
clock:          50000000 Hz
actual clock:   200000000 Hz

After the fix:
clock:          50000000 Hz
actual clock:   50000000 Hz

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20250629203859.170850-1-biju.das.jz@bp.renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Biju Das 2025-06-29 21:38:56 +01:00 • committed by Greg Kroah-Hartman

parent 6a6613f968

commit fe653f9f1f

1 changed files with 5 additions and 1 deletions

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drivers/mmc/host/renesas_sdhi_core.c

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