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

On 24.01.2023 08:19, Devi Priya wrote:

On 1/13/2023 7:50 PM, Krzysztof Kozlowski wrote:

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On 13/01/2023 14:29, Devi Priya wrote:

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+
+    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

If it's protected on *all* boards and *all* firmwares (for any
good reason that you probably have internally), perhaps it
would be better to describe it in the .c driver.. wdyt?

Konrad

quoted

Best regards,
Krzysztof

Regards,
Devi Priya

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