Re: [PATCH v2 04/11] arm64: dts: Initial DTS files for Broadcom Stingray SOC

From: Anup Patel
Date: Tue May 16 2017 - 06:48:11 EST


On Mon, May 15, 2017 at 6:43 PM, Mark Rutland <mark.rutland@xxxxxxx> wrote:
> Hi,
>
> On Mon, May 15, 2017 at 05:32:14PM +0530, Anup Patel wrote:
>> +/ {
>> + chosen { /* Default kernel args */
>> + bootargs = "root=/dev/ram rw rootwait \
>> + earlycon=uart8250,mmio32,0x68a10000 \
>> + pci=pcie_bus_safe cma=64M";
>
> Why do we need all of these?

Yes, we don't need bootargs here. This were just for reference.

I will remove default bootargs because its responsibility of
bootloader to add it.

>
>> + linux,stdout-path = "serial0:115200n8";
>
> Please drop the 'linux,' prefix here.

Sure, will do.

>
> [...]
>
>> + memory: memory@80000000 {
>> + device_type = "memory";
>> + reg = <0x00000000 0x80000000 0 0x40000000>;
>> + };
>> +
>> + psci {
>> + compatible = "arm,psci-0.2";
>> + method = "smc";
>> + };
>> +
>> + pmu {
>> + compatible = "arm,armv8-pmuv3";
>> + interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
>> + };
>> +
>> + timer {
>> + compatible = "arm,armv8-timer";
>> + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(8) |
>> + IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(8) |
>> + IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(8) |
>> + IRQ_TYPE_LEVEL_LOW)>,
>> + <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(8) |
>> + IRQ_TYPE_LEVEL_LOW)>;
>
> GICv3 PPIs don't have a mask. See
>
> Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt
>
> Please remove the GIC_CPU_MASK_*() uses here and in this dts. They
> shouldn't be there.

Thanks for catching.

We had taken care of this in PMU DT node but did not cleanup timer
DT node.

Thanks,
Anup