diff --git a/Software/OperatingSystem/Linux/Development/KernelDriver/Linux_SPI_设备驱动开发_x86平台.md b/Software/OperatingSystem/Linux/Development/KernelDriver/Linux_SPI_设备驱动开发_x86平台.md
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+# Linux SPI 设备驱动开发（x86平台）
+
+## Platform
+
+arch->x86->platform 下创建 board 文件。
+
+## Match
+
+spi_register_board_info <------------------------+
+                                                 |
+pxa2xx_spi_probe                                 |
+    devm_spi_register_controller                 |
+        spi_register_controller                  |
+            spi_match_controller_to_boardinfo <--+
+                bus_num 必须一致才会执行 spi_new_device()