driver: espi: add espi peripheral channel HOST_CMD driver for rts5912
espi: add espi peripheral channel HOST_CMD driver for rts5912
Unlike other chips using IO port 0x800-0x8ff, we utilize shared memory to
transfer host command parameters. The AP firmware must have corresponding
settings for this configuration.
Signed-off-by:
jhan bo chao <jhan_bo_chao@realtek.com>
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