clk: qcom: gcc-sdm845: Use floor ops for sdcc clks
[ Upstream commit 5e4b7e82 ] Some MMC cards fail to enumerate properly when inserted into an MMC slot on sdm845 devices. This is because the clk ops for qcom clks round the frequency up to the nearest rate instead of down to the nearest rate. For example, the MMC driver requests a frequency of 52MHz from clk_set_rate() but the qcom implementation for these clks rounds 52MHz up to the next supported frequency of 100MHz. The MMC driver could be modified to request clk rate ranges but for now we can fix this in the clk driver by changing the rounding policy for this clk to be round down instead of round up. Fixes: 06391edd ("clk: qcom: Add Global Clock controller (GCC) driver for SDM845") Reported-by:Douglas Anderson <dianders@chromium.org> Cc: Taniya Das <tdas@codeaurora.org> Signed-off-by:
Stephen Boyd <swboyd@chromium.org> Link: https://lkml.kernel.org/r/20190830195142.103564-1-swboyd@chromium.org Reviewed-by:
Douglas Anderson <dianders@chromium.org> Signed-off-by:
Stephen Boyd <sboyd@kernel.org> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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e5169c00
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