1*54a17cb1STang Yun ping1. modify "ddrbin_param.txt", choose ddr frequency, uart info. 2*54a17cb1STang Yun ping2. run "ddrbin_tool" with argument 1: ddrbin_param.txt, argument 2: ddr bin file. 3*54a17cb1STang Yun ping like: ./ddrbin_tool ddrbin_param.txt px30_ddr_333MHz_v1.13.bin 4*54a17cb1STang Yun ping 5*54a17cb1STang Yun pingsupport following chip: 6*54a17cb1STang Yun pingPX30：ddr bin version should be released later than V1.11. Support modify uart info only. 7*54a17cb1STang Yun pingRK1808: ddr bin version should be released later than V1.03. Support modify uart info and ddr frequency. ddr freq should be one of 333,400,533,666,786,933. 8*54a17cb1STang Yun pingRK322x: ddr bin version should be released later than V1.08. Support modify uart info and ddr frequency. These is no limit to ddr frequency. 9*54a17cb1STang Yun pingRK322xh: ddr bin version should be released later than V1.14. Support modify uart info only. 10*54a17cb1STang Yun pingRK3288: ddr bin version should be released later than V1.07. Support modify uart info only. 11*54a17cb1STang Yun pingRK3308: ddr bin version should be released later than V1.28. Support modify uart info and ddr frequency. ddr freq should be one of 225,294,393,451,589. 12*54a17cb1STang Yun pingRK3326：ddr bin version should be released later than V1.11. Support modify uart info only. 13*54a17cb1STang Yun pingRK3368: ddr bin version should be released later than V2.04. Support modify uart info and ddr frequency. These is no limit to ddr frequency. 14*54a17cb1STang Yun pingRK3328: ddr bin version should be released later than V1.14. Support modify uart info only. 15*54a17cb1STang Yun pingRK3399: ddr bin version should be released later than V1.20. Support modify uart info only. 16*54a17cb1STang Yun pingRK3399PRO NPU: ddr bin version should be released later than V1.03. Support modify uart info and ddr frequency. ddr freq should be one of 333,400,533,666,786,933. 17*54a17cb1STang Yun ping 18*54a17cb1STang Yun pingddrbin_param.txt: 19*54a17cb1STang Yun pingstart tag: keep default value. Do not modify it. 20*54a17cb1STang Yun pingddr2_freq： ddr2 frequency, unit:MHz. 21*54a17cb1STang Yun pinglp2_freq：lpddr2 frequency, unit:MHz. 22*54a17cb1STang Yun pingddr3_freq：ddr3 frequency, unit:MHz. 23*54a17cb1STang Yun pinglp3_freq：lpddr3 frequency, unit:MHz. 24*54a17cb1STang Yun pingddr4_freq：ddr4 frequency, unit:MHz. 25*54a17cb1STang Yun pinglp4_freq：lpddr4 frequency, unit:MHz. 26*54a17cb1STang Yun ping 27*54a17cb1STang Yun pinguart id：uart number. 0 for uart0, 1 for uart1, 2 for uart2..., 0xf will disable uart. 28*54a17cb1STang Yun pinguart iomux：uart iomux info, 0 for uartn_m0, 1 for uartn_m1, 2 for uartn_m2...(like uart2_m0, uart2_m1,uart2_m2), Or 0 for uartn_a, 1 for uartn_b, 2 for uartn_c.(like uar2a, uart2b, uart2c). 29*54a17cb1STang Yun pinguart baudrate：uart baudrate should be 115200 or 1500000. 30