Searched hist:bbd7a6cc382f4317b08ba71151b23abf76fc4c34 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/drivers/clk/ |
| H A D | clk-divider.c | diff bbd7a6cc382f4317b08ba71151b23abf76fc4c34 Sun Jun 27 17:39:57 CDT 2021 Martin Blumenstingl <martin.blumenstingl@googlemail.com> clk: divider: Add re-usable determine_rate implementations
These are useful when running on 32-bit systems to increase the upper
supported frequency limit. clk_ops.round_rate returns a signed long
which limits the maximum rate on 32-bit systems to 2^31 (or approx.
2.14GHz). clk_ops.determine_rate internally uses an unsigned long so
the maximum rate on 32-bit systems is 2^32 or approx. 4.29GHz.
To avoid code-duplication switch over divider_{ro_,}round_rate_parent
to use the new divider_{ro_,}determine_rate functions.
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20210627223959.188139-2-martin.blumenstingl@googlemail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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| /openbmc/linux/include/linux/ |
| H A D | clk-provider.h | diff bbd7a6cc382f4317b08ba71151b23abf76fc4c34 Sun Jun 27 17:39:57 CDT 2021 Martin Blumenstingl <martin.blumenstingl@googlemail.com> clk: divider: Add re-usable determine_rate implementations
These are useful when running on 32-bit systems to increase the upper
supported frequency limit. clk_ops.round_rate returns a signed long
which limits the maximum rate on 32-bit systems to 2^31 (or approx.
2.14GHz). clk_ops.determine_rate internally uses an unsigned long so
the maximum rate on 32-bit systems is 2^32 or approx. 4.29GHz.
To avoid code-duplication switch over divider_{ro_,}round_rate_parent
to use the new divider_{ro_,}determine_rate functions.
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20210627223959.188139-2-martin.blumenstingl@googlemail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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