Inquiry VDD_PU control by imx6q-cpufreq.c

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Inquiry VDD_PU control by imx6q-cpufreq.c

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andychien
Contributor III

Dear Sir,

Our Customer setting VDDPU  turned off turing startup on i.MX6D , Linux OS.

customer suspect that it will be turned on unless there is an application using the VPU want to use imx6q-cpufreq.c if the PU regulator is enabled. 

Could you help check in imx6q-cpufreq.c if the PU regulator is enabled?

Thanks,

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Andy

please check vpu driver mxc_vpu.c in linux/drivers/mxc/vpu, it uses regulator_enable(vpu_regulator)
and reg_pu: regulator-vddpu  in imx6qdl.dtsi
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/arch/arm/boot/dts/imx6qdl.dtsi?id=r...
regulator_set_voltage_time(pu_reg..,regulator_set_voltage_time(soc_reg.. using array
imx6_soc_volt[] = PU_SOC_VOLTAGE_NORMAL

Best regards
igor
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