On 05.07.23 10:28, Andrej Picej wrote:
> Hi Marco,
>
> On 4. 07. 23 10:17, Marco Felsch wrote:
>> On 23-07-04, Andrej Picej wrote:
>>> If regulator is not marked as always-on the regulator gets disabled on
>>> reboot breaking the next boot.
>>>
>>> Signed-off-by: Andrej Picej <andrej.picej@xxxxxxxxx>
>>> ---
>>> arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi | 1 +
>>> 1 file changed, 1 insertion(+)
>>>
>>> diff --git a/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi b/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
>>> index 80adb2a02cc9..25d6a036d5b8 100644
>>> --- a/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
>>> +++ b/arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi
>>> @@ -192,6 +192,7 @@ vdd_3v3_pmic_io_reg: ldo6 {
>>> vdd_sd0_reg: ldo9 {
>>> regulator-min-microvolt = <3300000>;
>>> regulator-max-microvolt = <3300000>;
>>> + regulator-always-on;
>>
>> I think this is the supply for the sd-card, so you can make use of
>> 'vmmc-supply'.
>
> This is already the case:
>
>> &usdhc3 {
>> pinctrl-names = "default";
>> pinctrl-0 = <&pinctrl_usdhc3
>> &pinctrl_usdhc3_cdwp>;
>> cd-gpios = <&gpio1 27 GPIO_ACTIVE_LOW>;
>> wp-gpios = <&gpio1 29 GPIO_ACTIVE_HIGH>;
>> vmmc-supply = <&vdd_sd0_reg>;
>> status = "disabled";
>> };
>
> I think the main reason for a failed boot is that the PMIC doesn't get reset and that the bootloader doesn't specifically enable the SD card regulator.
>
> Could this patch still be applied or should we put the fix in reset routine/bootloader?
Is SD-Card not main boot medium? From your description, I thought BootROM
will fail to boot before bootloader has a chance to do anything about it.
>
> Best regards,
> Andrej
>
>>
>> Regards,
>> Marco
>>
>>> };
>>> vdd_sd1_reg: ldo10 {
>>> --
>>> 2.25.1
>>>
>>>
>>>
>
>
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