linux-kernel - [PATCH v2 2/8] clk: qcom: gcc-sm8750: Update the SDCC RCGs to use shared_floor

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Message-Id: <20251127-sdcc_shared_floor_ops-v2-2-473afc86589c@oss.qualcomm.com>
Date: Thu, 27 Nov 2025 23:27:37 +0530
From: Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Taniya Das <quic_tdas@...cinc.com>,
        Melody Olvera <quic_molvera@...cinc.com>,
        Ajit Pandey <quic_ajipan@...cinc.com>,
        Imran Shaik <quic_imrashai@...cinc.com>,
        Luca Weiss <luca.weiss@...rphone.com>,
        Rajendra Nayak <quic_rjendra@...cinc.com>,
        Abel Vesa <abel.vesa@...aro.org>,
        Sibi Sankar <sibi.sankar@....qualcomm.com>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Cc: Ajit Pandey <ajit.pandey@....qualcomm.com>,
        Imran Shaik <imran.shaik@....qualcomm.com>,
        Taniya Das <taniya.das@....qualcomm.com>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>,
        Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
Subject: [PATCH v2 2/8] clk: qcom: gcc-sm8750: Update the SDCC RCGs to use
 shared_floor_ops

Use shared_floor_ops for the SDCC RCGs so the RCG is safely parked
during disable and the new parent configuration is programmed in
hardware only when the new parent is enabled, avoiding cases where
the RCG configuration fails to update.

Fixes: 3267c774f3ff ("clk: qcom: Add support for GCC on SM8750")
Reviewed-by: Taniya Das <taniya.das@....qualcomm.com>
Reviewed-by: Imran Shaik <imran.shaik@....qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
Signed-off-by: Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>
---
 drivers/clk/qcom/gcc-sm8750.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/qcom/gcc-sm8750.c b/drivers/clk/qcom/gcc-sm8750.c
index def86b71a3da534f07844f01ecb73b424db3bddc..db81569dd4b17de1c70ab5058d4ea186e08ce09e 100644
--- a/drivers/clk/qcom/gcc-sm8750.c
+++ b/drivers/clk/qcom/gcc-sm8750.c
@@ -1030,7 +1030,7 @@ static struct clk_rcg2 gcc_sdcc2_apps_clk_src = {
 		.parent_data = gcc_parent_data_8,
 		.num_parents = ARRAY_SIZE(gcc_parent_data_8),
 		.flags = CLK_SET_RATE_PARENT,
-		.ops = &clk_rcg2_floor_ops,
+		.ops = &clk_rcg2_shared_floor_ops,
 	},
 };
 
@@ -1052,7 +1052,7 @@ static struct clk_rcg2 gcc_sdcc4_apps_clk_src = {
 		.parent_data = gcc_parent_data_0,
 		.num_parents = ARRAY_SIZE(gcc_parent_data_0),
 		.flags = CLK_SET_RATE_PARENT,
-		.ops = &clk_rcg2_floor_ops,
+		.ops = &clk_rcg2_shared_floor_ops,
 	},
 };
 

-- 
2.34.1