Re: [PATCH 6/7] arm64: dts: Add ipq9574 SoC and AL02 board support

Devi Priya
2023-01-24T07:21:24Z

On 1/13/2023 7:50 PM, Krzysztof Kozlowski wrote:
> On 13/01/2023 14:29, Devi Priya wrote:
>>>> +
>>>> + soc: soc@0 {
>>>> + #address-cells = <1>;
>>>> + #size-cells = <1>;
>>>> + ranges = <0 0 0 0xffffffff>;
>>>> + compatible = "simple-bus";
>>>> +
>>>> + tlmm: pinctrl@1000000 {
>>>> + compatible = "qcom,ipq9574-tlmm";
>>>> + reg = <0x01000000 0x300000>;
>>>> + interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
>>>> + gpio-controller;
>>>> + #gpio-cells = <2>;
>>>> + gpio-ranges = <&tlmm 0 0 65>;
>>>> + gpio-reserved-ranges = <59 1>;
>>>
>>> Hm, why reserved ranges are in SoC?
>> As the gpio is forbidden on all ipq9574 boards, we have added it in SoC
>
> Why it is forbidden on all boards? I guess it depends on the firmware
> and this can differ, can't it?
>
This GPIO is protected and used by the TZ firmware and is forbidden on
all the boards & firmware
> Best regards,
> Krzysztof
>
Regards,
Devi Priya