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tool: ddrbin_tool: add more instructions for ddr*_f*_freq_mhz/lp*_f*_freq_mhz

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Change-Id: I6675270be751c6bbfd5353ace24263d6565e4b42
Signed-off-by: Zhihuan He <huan.he@rock-chips.com>
This commit is contained in:
Zhihuan He
2020-10-20 15:17:03 +08:00
parent 598d969617
commit 72640b4b42
1 changed files with 9 additions and 1 deletions
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10
tools/ddrbin_tool_user_guide.txt
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@@ -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.