linux-kernel - [PATCH 2/2] clk: qcom: smd-rpm: Set XO rate and CLK_IS

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Message-Id: <20230731-topic-pcnoc-v1-2-452dd36d11d7@linaro.org>
Date:   Mon, 31 Jul 2023 14:20:13 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 2/2] clk: qcom: smd-rpm: Set XO rate and CLK_IS_CRITICAL on
 PCNoC

On all supported SoCs to date, the PCNoC (a.k.a CNoC_PERIPH) clock must
be always-on as long as the APSS is online and only has to run
at 19.2 MHz. Define it to be as such in the ACTIVE domain.

Some SoCs use that clock for bus scaling, while others just need it for
reaching the hardware. This commit will hurt neither.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/clk/qcom/clk-smd-rpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/clk-smd-rpm.c b/drivers/clk/qcom/clk-smd-rpm.c
index ebb8d9aac89d..0191fc0dd7da 100644
--- a/drivers/clk/qcom/clk-smd-rpm.c
+++ b/drivers/clk/qcom/clk-smd-rpm.c
@@ -455,7 +455,7 @@ DEFINE_CLK_SMD_RPM_BRANCH(aggre2_noc, QCOM_SMD_RPM_AGGR_CLK, 2, 1000);
 DEFINE_CLK_SMD_RPM(aggre1_noc, QCOM_SMD_RPM_AGGR_CLK, 1);
 DEFINE_CLK_SMD_RPM(aggre2_noc, QCOM_SMD_RPM_AGGR_CLK, 2);
 
-DEFINE_CLK_SMD_RPM_BUS(pcnoc, 0);
+DEFINE_CLK_SMD_RPM_BUS_A(pcnoc, 0, 19200000, CLK_IS_CRITICAL);
 DEFINE_CLK_SMD_RPM_BUS(snoc, 1);
 DEFINE_CLK_SMD_RPM_BUS(sysmmnoc, 2);
 DEFINE_CLK_SMD_RPM_BUS(cnoc, 2);

-- 
2.41.0