linux-kernel - [PATCH v2] clk: qcom: gcc: Update the SDCC clock to use shared_floor

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Message-Id: <20251024-sdcc_rcg2_shared_ops-v2-1-8fd5daca9cd2@oss.qualcomm.com>
Date: Fri, 24 Oct 2025 10:48:45 +0530
From: Taniya Das <taniya.das@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Dmitry Baryshkov <lumag@...nel.org>,
        Taniya Das <quic_tdas@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Ajit Pandey <ajit.pandey@....qualcomm.com>,
        Imran Shaik <imran.shaik@....qualcomm.com>,
        Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>,
        Taniya Das <taniya.das@....qualcomm.com>
Subject: [PATCH v2] clk: qcom: gcc: Update the SDCC clock to use
 shared_floor_ops

Fix "gcc_sdcc2_apps_clk_src: rcg didn't update its configuration" during
boot. This happens due to the floor_ops tries to update the rcg
configuration even if the clock is not enabled.
The shared_floor_ops ensures that the RCG is safely parked and the new
parent configuration is cached in the parked_cfg when the clock is off.

Ensure to use the ops for the other SDCC clock instances as well.

Fixes: 39d6dcf67fe9 ("clk: qcom: gcc: Add support for QCS615 GCC clocks")
Signed-off-by: Taniya Das <taniya.das@....qualcomm.com>
---
Changes in v2:
- EDITME: describe what is new in this series revision.
- EDITME: use bulletpoints and terse descriptions.
- Link to v1: https://lore.kernel.org/r/20250804-sdcc_rcg2_shared_ops-v1-1-41f989e8cbb1@oss.qualcomm.com
---
 drivers/clk/qcom/gcc-qcs615.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/qcom/gcc-qcs615.c b/drivers/clk/qcom/gcc-qcs615.c
index 9695446bc2a3c81f63f6fc0c98d298270f3494cc..5b3b8dd4f114bdcb8911a9ce612c39a1c6e05b23 100644
--- a/drivers/clk/qcom/gcc-qcs615.c
+++ b/drivers/clk/qcom/gcc-qcs615.c
@@ -784,7 +784,7 @@ static struct clk_rcg2 gcc_sdcc1_apps_clk_src = {
 		.name = "gcc_sdcc1_apps_clk_src",
 		.parent_data = gcc_parent_data_1,
 		.num_parents = ARRAY_SIZE(gcc_parent_data_1),
-		.ops = &clk_rcg2_floor_ops,
+		.ops = &clk_rcg2_shared_floor_ops,
 	},
 };
 
@@ -806,7 +806,7 @@ static struct clk_rcg2 gcc_sdcc1_ice_core_clk_src = {
 		.name = "gcc_sdcc1_ice_core_clk_src",
 		.parent_data = gcc_parent_data_0,
 		.num_parents = ARRAY_SIZE(gcc_parent_data_0),
-		.ops = &clk_rcg2_floor_ops,
+		.ops = &clk_rcg2_shared_floor_ops,
 	},
 };
 
@@ -830,7 +830,7 @@ static struct clk_rcg2 gcc_sdcc2_apps_clk_src = {
 		.name = "gcc_sdcc2_apps_clk_src",
 		.parent_data = gcc_parent_data_8,
 		.num_parents = ARRAY_SIZE(gcc_parent_data_8),
-		.ops = &clk_rcg2_floor_ops,
+		.ops = &clk_rcg2_shared_floor_ops,
 	},
 };
 

---
base-commit: 5c5a10f0be967a8950a2309ea965bae54251b50e
change-id: 20250804-sdcc_rcg2_shared_ops-ea6e26185fe6

Best regards,
-- 
Taniya Das <taniya.das@....qualcomm.com>