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From:   Konrad Dybcio <konrad.dybcio@linaro.org>
Date:   Thu, 14 Dec 2023 19:13:38 +0100
Subject: [PATCH 1/6] interconnect: qcom: sc8180x: Mark CO0 BCM keepalive
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Message-Id: <20231214-topic-sc8180_fixes-v1-1-421904863006@linaro.org>
References: <20231214-topic-sc8180_fixes-v1-0-421904863006@linaro.org>
In-Reply-To: <20231214-topic-sc8180_fixes-v1-0-421904863006@linaro.org>
To:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Georgi Djakov <djakov@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Vinod Koul <vkoul@kernel.org>
Cc:     linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        Maximilian Luz <luzmaximilian@gmail.com>,
        Gustave Monce <gustave.monce@outlook.com>,
        Konrad Dybcio <konrad.dybcio@linaro.org>
Precedence: bulk

The CO0 BCM needs to be up at all times, otherwise some hardware (like
the UFS controller) loses its connection to the rest of the SoC,
resulting in a hang of the platform, accompanied by a spectacular
logspam.

Mark it as keepalive to prevent such cases.

Fixes: 9c8c6bac1ae8 ("interconnect: qcom: Add SC8180x providers")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/interconnect/qcom/sc8180x.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/interconnect/qcom/sc8180x.c b/drivers/interconnect/qcom/sc8180x.c
index 20331e119beb..03d626776ba1 100644
--- a/drivers/interconnect/qcom/sc8180x.c
+++ b/drivers/interconnect/qcom/sc8180x.c
@@ -1372,6 +1372,7 @@ static struct qcom_icc_bcm bcm_mm0 = {
 
 static struct qcom_icc_bcm bcm_co0 = {
 	.name = "CO0",
+	.keepalive = true,
 	.num_nodes = 1,
 	.nodes = { &slv_qns_cdsp_mem_noc }
 };

-- 
2.40.1