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Based on device tree setting, set the internal analog gain. Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20220429220144.1476049-9-gwendal@chromium.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>