mtk_mipi_tx is a part of mtk_drm module, but phy driver should be an
independent module rather than be part of drm module, so separate the phy
driver to an independent module.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
        select DRM_PANEL
        select MEMORY
        select MTK_SMI
+       select PHY_MTK_MIPI_DSI
        select VIDEOMODE_HELPERS
        help
          Choose this option if you have a Mediatek SoCs.
        select PHY_MTK_HDMI
        help
          DRM/KMS HDMI driver for Mediatek SoCs
+
+config PHY_MTK_MIPI_DSI
+       tristate "Mediatek MIPI-DSI-PHY Driver"
+       depends on ARCH_MEDIATEK && OF
+       select GENERIC_PHY
+       help
+         Support MIPI DSI PHY for Mediatek SoCs.
 
                  mtk_drm_gem.o \
                  mtk_drm_plane.o \
                  mtk_dsi.o \
-                 mtk_mipi_tx.o \
-                 mtk_mt8173_mipi_tx.o \
-                 mtk_mt8183_mipi_tx.o \
                  mtk_dpi.o
 
 obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
                          mtk_hdmi_ddc.o
 
 obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
+
+phy-mtk-mipi-dsi-drv-objs := mtk_mipi_tx.o \
+                            mtk_mt8173_mipi_tx.o \
+                            mtk_mt8183_mipi_tx.o
+
+obj-$(CONFIG_PHY_MTK_MIPI_DSI) += phy-mtk-mipi-dsi-drv.o
 
        &mtk_disp_rdma_driver,
        &mtk_dpi_driver,
        &mtk_drm_platform_driver,
-       &mtk_mipi_tx_driver,
        &mtk_dsi_driver,
 };
 
 
 extern struct platform_driver mtk_disp_rdma_driver;
 extern struct platform_driver mtk_dpi_driver;
 extern struct platform_driver mtk_dsi_driver;
-extern struct platform_driver mtk_mipi_tx_driver;
 
 #endif /* MTK_DRM_DRV_H */
 
                .of_match_table = mtk_mipi_tx_match,
        },
 };
+module_platform_driver(mtk_mipi_tx_driver);
 
+MODULE_DESCRIPTION("MediaTek MIPI TX Driver");
+MODULE_LICENSE("GPL v2");