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通过rv1108.dtsi调整其中dvfs节点下pd_core和pd_ddr对应频率的电压。发现修改后电压并没有改变#xff0c;一直为11.25v。尝试了将pd_core下的operating-points中的1008000 1150000修改为1008000 1200000#xff0c;也无作用。将operating-points中频率是留一个一直为11.25v。尝试了将pd_core下的operating-points中的1008000 1150000修改为1008000 1200000也无作用。将operating-points中频率是留一个指定电压为1200000。电压依旧为11.25v那么应该如何修改vdd_core的电压的呢 解决方案
首先核查SDK的配置SDK不要开启DVFS变频。 KERNEL下的.config配置如下 # CONFIG_DVFS is not set
如果要修改vdd_core的电压可以单独加下代码
diff --git a/drivers/regulator/rk816-regulator.c b/drivers/regulator/rk816-regulator.c
index 0b070b2..1609f60 100644
--- a/drivers/regulator/rk816-regulator.cb/drivers/regulator/rk816-regulator.c-766,6 766,7 static int rk816_regulator_probe(struct platform_device *pdev)struct regulator_config config {};struct regulator_dev *rk816_rdev;int ret, i;unsigned int sel;if (!pdata || !pdata-chip_name) {dev_err(pdev-dev, invalid platform data\n);-814,6 815,11 static int rk816_regulator_probe(struct platform_device *pdev)}rk816-rdev[i] rk816_rdev;if(rk8xx_reg-reg_desc[i].idRK805_ID_DCDC1||rk8xx_reg-reg_desc[i].idRK816_ID_DCDC1){printk(%sset dcdc1 voltage\n,__func__);rk816_dcdc_set_voltage(rk816-rdev[i],1200000,1200000,sel);}}
