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Softwares/BIOS/SATA/README.md

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+# SATA Branch
+
+Enabled integrated SATA controller on the basis of standard BIOS.
+
+## Interface Configuration
+
+### Special Notes
+
+- **USB2_P6**: Dedicated for USB Type-C, must be used in conjunction with a PD controller, **cannot be used as a standard USB port**.
+
+### HSIO (High-Speed Input/Output)
+
+- **HSIO0**: USB 3.2 10Gbps
+- **HSIO1**: USB 3.2 10Gbps
+- **HSIO2**: PCIe 3.0 x1
+- **HSIO3**: PCIe 3.0 x1
+- ==========
+- **HSIO8**: PCIe 3.0 x4 (Lane 0)
+- **HSIO9**: PCIe 3.0 x4 (Lane 1)
+- **HSIO10**: SATA 3.0
+- **HSIO11**: SATA 3.0
+- ==========
+- **HSIO6**: PCIe 3.0 x1
+
+### DDI/TCP
+
+- **DDIA**: eDP 1.4b (eDP interface on LattePanda Mu)
+
+- **DDIB**: HDMI 2.0
+
+- **TCP0**: HDMI 2.0
+
+- **TCP1**: USB Type-C (requires external PD controller)
+
+### GPIOs
+
+- **I2C1**: Touch panel (touch connector on LattePanda Mu)
+- **I2C2**: Communication with Type-C PD controller
+- **GPP_B11**: Type-C PD controller PMCALERT\#
+- **GPP_B14**: SATA HDD LED
+- **GPP_D0**: WWAN_Power_Off
+- **GPP_D1**: WWAN_Reset
+- **GPP_D2**: Communication interrupt with Type-C PD controller
+
+Other GPIOs not listed are not allocated specific functions.