clk: qcom: clk-rcg2: fix gfx3d frequency calculation
authorDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tue, 19 Apr 2022 23:54:47 +0000 (02:54 +0300)
committerStephen Boyd <sboyd@kernel.org>
Fri, 22 Apr 2022 02:49:19 +0000 (19:49 -0700)
commitd968fda3de91ec2f250ba27149cb1b5e9516415f
tree21dae89f79a41527a0d4722cd4a9de58027132c9
parent37843d0f6e7a23af19a6cbe68b9503d318fe1a29
clk: qcom: clk-rcg2: fix gfx3d frequency calculation

Since the commit 948fb0969eae ("clk: Always clamp the rounded rate"),
the clk_core_determine_round_nolock() would clamp the requested rate
between min and max rates from the rate request. Normally these fields
would be filled by clk_core_get_boundaries() called from
clk_round_rate().

However clk_gfx3d_determine_rate() uses a manually crafted rate request,
which did not have these fields filled. Thus the requested frequency
would be clamped to 0, resulting in weird frequencies being requested
from the hardware.

Fix this by filling min_rate and max_rate to the values valid for the
respective PLLs (0 and ULONG_MAX).

Fixes: 948fb0969eae ("clk: Always clamp the rounded rate")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220419235447.1586192-1-dmitry.baryshkov@linaro.org
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reported-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
drivers/clk/qcom/clk-rcg2.c