linux-kernel - [PATCH 01/53] dt-bindings: interconnect: qcom,icc: Introduce fixed BCM voter indices

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Message-Id: <20230708-topic-rpmh_icc_rsc-v1-1-b223bd2ac8dd@linaro.org>
Date:   Tue, 11 Jul 2023 14:18:00 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Georgi Djakov <djakov@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        cros-qcom-dts-watchers@...omium.org
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 01/53] dt-bindings: interconnect: qcom,icc: Introduce fixed
 BCM voter indices

It makes zero (or less) sense to consume BCM voters per interconnect
provider. They are shared throughout the entire system and it's enough
to keep a single reference to each of them.

Storing them in a shared array at fixed indices will let us improve both
the representation of the RPMh architecture (every RSC can hold a resource
vote on any bus, they're not limited in that regard) and save as much as
kilobytes worth of RAM.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 include/dt-bindings/interconnect/qcom,icc.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/dt-bindings/interconnect/qcom,icc.h b/include/dt-bindings/interconnect/qcom,icc.h
index cd34f36daaaa..9c13ef8a044e 100644
--- a/include/dt-bindings/interconnect/qcom,icc.h
+++ b/include/dt-bindings/interconnect/qcom,icc.h
@@ -23,4 +23,12 @@
 #define QCOM_ICC_TAG_ALWAYS		(QCOM_ICC_TAG_AMC | QCOM_ICC_TAG_WAKE |\
 					 QCOM_ICC_TAG_SLEEP)
 
+#define ICC_BCM_VOTER_APPS		0
+#define ICC_BCM_VOTER_DISP		1
+#define ICC_BCM_VOTER_CAM0		2
+#define ICC_BCM_VOTER_CAM1		3
+#define ICC_BCM_VOTER_CAM2		4
+
+#define ICC_BCM_VOTER_MAX		64
+
 #endif

-- 
2.41.0