11. modify "ddrbin_param.txt", choose ddr frequency, uart info. 22. run "ddrbin_tool" with argument 1: ddrbin_param.txt, argument 2: ddr bin file. 3 like: ./ddrbin_tool ddrbin_param.txt px30_ddr_333MHz_v1.13.bin 4 5support following chip: 6PX30: ddr bin version should be released later than V1.11. Support modify uart info only. The ddr bin version V1.12 and later support DDR 2t info modification, only DDR3 support. 7RK1808: 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. The ddr bin version V1.03 and later support DDR 2t info modification, only DDR2/DDR3/DDR4 support. 8RK322x: ddr bin version should be released later than V1.08. Support modify uart info and ddr frequency. These is no limit to ddr frequency. The ddr bin version V1.09 and later support DDR 2t info modification, only DDR2/DDR3 support. 9RK322xh: ddr bin version should be released later than V1.14. Support modify uart info only. The ddr bin version V1.16 and later support DDR 2t info modification, only DDR3 support. 10RK3288: ddr bin version should be released later than V1.07. Support modify uart info only. The ddr bin version V1.08 and later support DDR 2t info modification, only DDR3 support. 11RK3308: 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. The ddr bin version V1.29 and later support DDR 2t info modification, only DDR2/DDR3 support. 12RK3326: ddr bin version should be released later than V1.11. Support modify uart info only. The ddr bin version V1.12 and later support DDR 2t info modification, only DDR3 support. 13RK3368: ddr bin version should be released later than V2.04. Support modify uart info and ddr frequency. These is no limit to ddr frequency. The ddr bin version V2.05 and later support DDR 2t info modification, only DDR3 support. 14RK3328: ddr bin version should be released later than V1.14. Support modify uart info only. The ddr bin version V1.16 and later support DDR 2t info modification, only DDR3 support. 15RK3399: ddr bin version should be released later than V1.20. Support modify uart info only. 16RK3399PRO 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. The ddr bin version V1.03 and later support DDR 2t info modification, only DDR2/DDR3/DDR4 support. 17RV1126/RV1109: all of version. Support modify uart info and ddr frequency. ddr freq should be one of 330,396,528,664,784,924,1056. Support DDR 2t info modification, only DDR3/DDR4 support. 18 19ddrbin_param.txt: 20start tag: keep default value. Do not modify it. 21ddr2_freq: ddr2 frequency, unit:MHz. 22lp2_freq: lpddr2 frequency, unit:MHz. 23ddr3_freq: ddr3 frequency, unit:MHz. 24lp3_freq: lpddr3 frequency, unit:MHz. 25ddr4_freq: ddr4 frequency, unit:MHz. 26lp4_freq: lpddr4 frequency, unit:MHz. 27 28If ddr*_freq/lp*_freq is no value, it's frequency will keep the same with the ddr bin frequency. 29 30uart id：uart number. 0 for uart0, 1 for uart1, 2 for uart2..., 0xf will disable uart. 31uart iomux：uart iomux info, 0 for uartn_m0, 1 for uartn_m1, 2 for uartn_m2...(like uart2_m0, uart2_m1,uart2_m2), 32Or 1 for uartn_a, 2 for uartn_b, 3 for uartn_c.(like uar2a, uart2b, uart2c). 33uart baudrate：uart baudrate should be 115200 or 1500000. 34 35If uart id/iomux/baudrate is no value, uart info will keep the same with ddr bin config. 36 37ddr_2t: ddr 2T timing mode. 1: enable ddr 2T, 0: disable ddr 2T. 38If 'ddr_2t' is no value, ddr_2t info will keep the same with ddr bin config. 39 40ddrx_fx_freq_mhz/lpx_fx_freq_mhz: ddr init will preinit these ddr frequencies. These frequencies correspond to the kernel frequency table. 41