RK3288怎么修改DDR频率

Chip Platform Rockchip
1

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

2

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";

};

3

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";

};