RK3288怎么修改DDR频率

Monster_Mr · 发表于 2018-2-5 19:43:42

本帖最后由 Monster_Mr 于 2018-2-5 20:43 编辑

各位大神求教，如何修改RK3288的DDR的频率，小弟新手，不知道如何下手，希望各位大神指点一二

lialong1st · 发表于 2018-2-6 11:32:36

rk3288.dts

&clk_ddr_dvfs_table {
operating-points = <
/* KHz uV */
200000 950000
300000 950000
400000 1000000
533000 1050000
800000 1200000
>;

freq-table = <
/*status freq(KHz)*/
SYS_STATUS_NORMAL 400000
SYS_STATUS_SUSPEND 200000
SYS_STATUS_VIDEO_1080P  240000
SYS_STATUS_VIDEO_4K    400000
SYS_STATUS_PERFORMANCE  792000
SYS_STATUS_DUALVIEW 400000
SYS_STATUS_BOOST 324000
SYS_STATUS_ISP 533000
>;
auto-freq-table = <
240000
324000
396000
528000
792000
>;
auto-freq=<0>;
status="okay";
};

lialong1st · 发表于 2018-2-6 11:33:08

rk3288.dts

&clk_ddr_dvfs_table {
operating-points = <
/* KHz uV */
200000 950000
300000 950000
400000 1000000
533000 1050000
800000 1200000
>;

freq-table = <
/*status freq(KHz)*/
SYS_STATUS_NORMAL 400000
SYS_STATUS_SUSPEND 200000
SYS_STATUS_VIDEO_1080P  240000
SYS_STATUS_VIDEO_4K    400000
SYS_STATUS_PERFORMANCE  792000
SYS_STATUS_DUALVIEW 400000
SYS_STATUS_BOOST 324000
SYS_STATUS_ISP 533000
>;
auto-freq-table = <
240000
324000
396000
528000
792000
>;
auto-freq=<0>;
status="okay";
};

RK3288怎么修改DDR频率

RK3288怎么修改DDR频率

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