linux-kernel - [PATCH 2/2] clk: qcom: gcc-msm8996: Use read-only RCG ops for RPM bus clocks

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Message-Id: <20230612-topic-rcg2_ro-v1-2-e7d824aeb628@linaro.org>
Date:   Mon, 12 Jun 2023 11:22:48 +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,
        Stephan Gerhold <stephan@...hold.net>,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 2/2] clk: qcom: gcc-msm8996: Use read-only RCG ops for RPM
 bus clocks

The config/periph/system NoC clocks are wholly controlled by the
RPM firmware and Linux should never ever alter their configuration.

Switch them over to read-only ops to avoid that.

Fixes: b1e010c0730a ("clk: qcom: Add MSM8996 Global Clock Control (GCC) driver")
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/clk/qcom/gcc-msm8996.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/qcom/gcc-msm8996.c b/drivers/clk/qcom/gcc-msm8996.c
index 5e44d1bcca9e..588e3b67657a 100644
--- a/drivers/clk/qcom/gcc-msm8996.c
+++ b/drivers/clk/qcom/gcc-msm8996.c
@@ -264,7 +264,7 @@ static struct clk_rcg2 system_noc_clk_src = {
 		.name = "system_noc_clk_src",
 		.parent_data = gcc_xo_gpll0_gpll0_early_div,
 		.num_parents = ARRAY_SIZE(gcc_xo_gpll0_gpll0_early_div),
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_ro_ops,
 	},
 };
 
@@ -284,7 +284,7 @@ static struct clk_rcg2 config_noc_clk_src = {
 		.name = "config_noc_clk_src",
 		.parent_data = gcc_xo_gpll0,
 		.num_parents = ARRAY_SIZE(gcc_xo_gpll0),
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_ro_ops,
 	},
 };
 
@@ -306,7 +306,7 @@ static struct clk_rcg2 periph_noc_clk_src = {
 		.name = "periph_noc_clk_src",
 		.parent_data = gcc_xo_gpll0,
 		.num_parents = ARRAY_SIZE(gcc_xo_gpll0),
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_ro_ops,
 	},
 };
 

-- 
2.41.0