[PATCH v3 16/16] arm_mpam: detect and enable MPAM-Fb PCC support

Lee Trager lee at trager.us
Wed Jul 15 09:08:15 PDT 2026


On 7/10/26 7:45 AM, Andre Przywara wrote:

> diff --git a/drivers/acpi/arm64/mpam.c b/drivers/acpi/arm64/mpam.c
> index 84963a20c3e7..64bc84bb2029 100644
> --- a/drivers/acpi/arm64/mpam.c
> +++ b/drivers/acpi/arm64/mpam.c
> @@ -256,6 +256,8 @@ static struct platform_device * __init acpi_mpam_parse_msc(struct acpi_mpam_msc_
>   	} else if (iface == MPAM_IFACE_PCC) {
>   		props[next_prop++] = PROPERTY_ENTRY_U32("pcc-channel",
>   							tbl_msc->base_address);
> +		props[next_prop++] = PROPERTY_ENTRY_U32("msc-id",
> +							tbl_msc->identifier);
>   	}

props is defined above as:

/* pcc, nrdy, affinity, and a sentinel */

struct property_entry props[4] = { 0 };

With the addition of the new property the array size needs to be 
increased to 5 and the comment updated




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