lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <7ed6fde0-37a4-a667-2629-0a6b8a202a69@norik.com>
Date:   Wed, 5 Jul 2023 10:28:22 +0200
From:   Andrej Picej <andrej.picej@...ik.com>
To:     Marco Felsch <m.felsch@...gutronix.de>
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, upstream@...tec.de
Subject: Re: [PATCH 2/2] ARM: dts: imx6: pfla02: Fix SD card reboot problem

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@...ik.com>
>> ---
>>   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?

Best regards,
Andrej

> 
> Regards,
>    Marco
> 
>>   			};
>>   
>>   			vdd_sd1_reg: ldo10 {
>> -- 
>> 2.25.1
>>
>>
>>

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ