From 72640b4b427d56561368327560c900ed64bbe71d Mon Sep 17 00:00:00 2001 From: Zhihuan He Date: Tue, 20 Oct 2020 15:17:03 +0800 Subject: [PATCH] tool: ddrbin_tool: add more instructions for ddr*_f*_freq_mhz/lp*_f*_freq_mhz Change-Id: I6675270be751c6bbfd5353ace24263d6565e4b42 Signed-off-by: Zhihuan He --- tools/ddrbin_tool_user_guide.txt | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/ddrbin_tool_user_guide.txt b/tools/ddrbin_tool_user_guide.txt index e608b6ce..6fa8fa4f 100644 --- a/tools/ddrbin_tool_user_guide.txt +++ b/tools/ddrbin_tool_user_guide.txt @@ -37,4 +37,12 @@ If uart id/iomux/baudrate is no value, uart info will keep the same with ddr bin ddr_2t: ddr 2T timing mode. 1: enable ddr 2T, 0: disable ddr 2T. If 'ddr_2t' is no value, ddr_2t info will keep the same with ddr bin config. -ddrx_fx_freq_mhz/lpx_fx_freq_mhz: ddr init will preinit these ddr frequencies. These frequencies correspond to the kernel frequency table. +ddr2_f1_freq_mhz: ddr2 frequency number 1, unit:MHz. +ddr2_f2_freq_mhz: ddr2 frequency number 2, unit:MHz. +ddr2_f3_freq_mhz: ddr2 frequency number 3, unit:MHz. +ddr2_f4_freq_mhz: ddr2 frequency number 4, unit:MHz. +ddr2_f5_freq_mhz: ddr2 frequency number 5, unit:MHz. +... +ddr*_f*_freq_mhz/lp*_f*_freq_mhz: Only RV1126/RV1109 used.The program will initialize dram by following order for example: ddr4_freq, ddr4_f1_freq_mhz, ddr4_f2_freq_mhz, ddr4_f3_freq_mhz, ddr4_f4_freq_mhz, ddr4_f5_freq_mhz. +And the final frequency is ddr4_freq to boot system. +The kernel dts ddr frequency table correspond to these frequencies.