clk: zynqmp: Add support for get max divider

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To achieve best possible rate, maximum limit of divider is required
while computation. Get maximum supported divisor from firmware. To
maintain backward compatibility assign maximum possible value(0xFFFF)
if query for max divisor is not successful.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Link: https://lkml.kernel.org/r/1575527759-26452-5-git-send-email-rajan.vaja@xilinx.com
Acked-by: Michal Simek <michal.simek@xilinx.com>
[sboyd@kernel.org: Remove else return and just return]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

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Rajan Vaja 2019-12-04 22:35:57 -08:00 • committed by Stephen Boyd

parent df2a4d94f1

commit e942171bbb

2 changed files with 37 additions and 0 deletions

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36

drivers/clk/zynqmp/divider.c

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1

include/linux/firmware/xlnx-zynqmp.h

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