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The dispcnlunit1_cp_xosc_clk should be de-asserted in display off
and only asserted in display on. As part of this workaround, Display
driver shall execute set-reset sequence at the end of the initialize
sequence to ensure clk does not remain active in display OFF.

--v2:
- Rebase.
--v3:
- Correct HSD number in commit message.
--v4:
- Reformat commit message.
- Use intel_de_rmw instead of intel_de_write
--v5:
- Build Fixes.

WA: 15013987218
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Nemesa Garg <nemesa.garg@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240708083247.2611258-1-mitulkumar.ajitkumar.golani@intel.com