[PATCH 17/48] clk: qcom: gcc-qcs8300: Use common clock controller probe data

From: Abel Vesa

Date: Wed Sep 16 2026 - 06:45:24 EST


Move the always-on branch register offsets into a critical_cbcrs array,
describe the DFS RCGs through qcom_cc_driver_data and move the register
programming into the clk_regs_configure callback.

Use qcom_cc_probe() to perform the common initialization instead of
open-coding it in the driver's probe.

Assisted-by: LLM
Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>
---
drivers/clk/qcom/gcc-qcs8300.c | 51 +++++++++++++++++++++---------------------
1 file changed, 26 insertions(+), 25 deletions(-)

diff --git a/drivers/clk/qcom/gcc-qcs8300.c b/drivers/clk/qcom/gcc-qcs8300.c
index 146b3b5dfead..1d2976aedc51 100644
--- a/drivers/clk/qcom/gcc-qcs8300.c
+++ b/drivers/clk/qcom/gcc-qcs8300.c
@@ -3673,7 +3673,32 @@ static const struct regmap_config gcc_qcs8300_regmap_config = {
.fast_io = true,
};

+static const u32 gcc_qcs8300_critical_cbcrs[] = {
+ 0x32004, /* GCC_CAMERA_AHB_CLK */
+ 0x32020, /* GCC_CAMERA_XO_CLK */
+ 0x33004, /* GCC_DISP_AHB_CLK */
+ 0x33018, /* GCC_DISP_XO_CLK */
+ 0x7d004, /* GCC_GPU_CFG_AHB_CLK */
+ 0x34004, /* GCC_VIDEO_AHB_CLK */
+ 0x34024, /* GCC_VIDEO_XO_CLK */
+};
+
+static void gcc_qcs8300_regs_configure(struct device *dev, struct regmap *regmap)
+{
+ /* FORCE_MEM_CORE_ON for ufs phy ice core clocks */
+ qcom_branch_set_force_mem_core(regmap, gcc_ufs_phy_ice_core_clk, true);
+}
+
+static const struct qcom_cc_driver_data gcc_qcs8300_driver_data = {
+ .clk_cbcrs = gcc_qcs8300_critical_cbcrs,
+ .num_clk_cbcrs = ARRAY_SIZE(gcc_qcs8300_critical_cbcrs),
+ .dfs_rcgs = gcc_dfs_clocks,
+ .num_dfs_rcgs = ARRAY_SIZE(gcc_dfs_clocks),
+ .clk_regs_configure = gcc_qcs8300_regs_configure,
+};
+
static const struct qcom_cc_desc gcc_qcs8300_desc = {
+ .driver_data = &gcc_qcs8300_driver_data,
.config = &gcc_qcs8300_regmap_config,
.clks = gcc_qcs8300_clocks,
.num_clks = ARRAY_SIZE(gcc_qcs8300_clocks),
@@ -3691,31 +3716,7 @@ MODULE_DEVICE_TABLE(of, gcc_qcs8300_match_table);

static int gcc_qcs8300_probe(struct platform_device *pdev)
{
- struct regmap *regmap;
- int ret;
-
- regmap = qcom_cc_map(pdev, &gcc_qcs8300_desc);
- if (IS_ERR(regmap))
- return PTR_ERR(regmap);
-
- ret = qcom_cc_register_rcg_dfs(regmap, gcc_dfs_clocks,
- ARRAY_SIZE(gcc_dfs_clocks));
- if (ret)
- return ret;
-
- /* Keep some clocks always enabled */
- qcom_branch_set_clk_en(regmap, 0x32004); /* GCC_CAMERA_AHB_CLK */
- qcom_branch_set_clk_en(regmap, 0x32020); /* GCC_CAMERA_XO_CLK */
- qcom_branch_set_clk_en(regmap, 0x33004); /* GCC_DISP_AHB_CLK */
- qcom_branch_set_clk_en(regmap, 0x33018); /* GCC_DISP_XO_CLK */
- qcom_branch_set_clk_en(regmap, 0x7d004); /* GCC_GPU_CFG_AHB_CLK */
- qcom_branch_set_clk_en(regmap, 0x34004); /* GCC_VIDEO_AHB_CLK */
- qcom_branch_set_clk_en(regmap, 0x34024); /* GCC_VIDEO_XO_CLK */
-
- /* FORCE_MEM_CORE_ON for ufs phy ice core clocks */
- qcom_branch_set_force_mem_core(regmap, gcc_ufs_phy_ice_core_clk, true);
-
- return qcom_cc_really_probe(&pdev->dev, &gcc_qcs8300_desc, regmap);
+ return qcom_cc_probe(pdev, &gcc_qcs8300_desc);
}

static struct platform_driver gcc_qcs8300_driver = {

--
2.54.0