firmware: arm_scmi: Increase performance MAX_OPPS limit to 64

Some platforms expose more than 32 operating performance points (OPPs)
per performance domain via the SCMI performance protocol, but the
driver currently limits the number of OPPs it can handle to 32 via
MAX_OPPS.

Bump MAX_OPPS to 64 so that these platforms can register all their
performance levels. This is an internal limit in the driver only and
does not affect the SCMI protocol ABI.

64 is chosen as the next power of two above the existing limit.

Signed-off-by: Vivek Aknurwar <vivek.aknurwar@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Alexey Klimov <alexey.klimov@linaro.org>
Message-Id: <20251014073454.461999-1-vivek.aknurwar@oss.qualcomm.com>
(sudeep.holla: Updated commit log to reflect driver limitation rather than spec)
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c
index 683fd9b85c5ce2c2a836de50139a136e8c310580..2249ef7fe7901df1b750ed82ccc4bc28a0f7d8f0 100644 (file)
--- a/drivers/firmware/arm_scmi/perf.c
+++ b/drivers/firmware/arm_scmi/perf.c
@@ -27,7 +27,7 @@
 /* Updated only after ALL the mandatory features for that version are merged */
 #define SCMI_PROTOCOL_SUPPORTED_VERSION                0x40000
 
-#define MAX_OPPS               32
+#define MAX_OPPS               64
 
 enum scmi_performance_protocol_cmd {
        PERF_DOMAIN_ATTRIBUTES = 0x3,