clk: vc5: Enable addition output configurations of the Versaclock
The existing driver is expecting the Versaclock to be pre-programmed,
and only sets the output frequency. Unfortunately, not all devices
are pre-programmed, and the Versaclock chip has more options beyond
just the frequency.
This patch enables the following additional features:
- Programmable voltage: 1.8V, 2.5V, or 3.3V
- Slew Percentage of normal: 85%, 90%, or 100%
- Output Type: LVPECL, CMOS, HCSL, or LVDS
Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20200603154329.31579-3-aford173@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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