LANDZO 3.5 Inch Touch Screen 320480 for Raspberry Pi 3 Model B and Pi 2 Pi Zero Pi 1 with Touch Pen ... (3.5 inch);

Production Introduction
This 3.5 inch touch screen module is designed especially for Raspberry Pi, using the latest Linux Core system (vision 3.18.9), the latest Raspberry Pi official UI desktop file system and the fastest SPI transmission data, an ideal alternative solution for HDMI monitor and convenient Men-Machine interface for Raspberry Pi, combined with the portable power, DIY anywhere anytime.

Specification
Type: TFT
LCD Interface: SP1
Touch Screen Controller: XPT2046
Backlight: LED
Color Levels Index: 65536
Resolution: 320*480 (Pixel)
Power Consumption Backlight Current

here is driver link for you
http://www.waveshare.com/wiki/3.5inch_RPi_LCD_(A) LCD