Add support for the TCSR clock controller found on Hawi SoCs.
This controller provides reference clocks for various peripherals
including PCIe, UFS, and USB.

Signed-off-by: Vivek Aknurwar <vivek.aknurwar@oss.qualcomm.com>
---
 drivers/clk/qcom/Kconfig       |   7 ++
 drivers/clk/qcom/Makefile      |   1 +
 drivers/clk/qcom/tcsrcc-hawi.c | 158 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 166 insertions(+)

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 8f55f10261ec..412badb0fb58 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -286,6 +286,13 @@ config QCOM_CLK_RPMH
 	 Say Y if you want to support the clocks exposed by RPMh on
 	 platforms such as SDM845.
 
+config CLK_HAWI_TCSRCC
+	tristate "Hawi TCSR Clock Controller"
+	depends on ARM64 || COMPILE_TEST
+	help
+	  Support for the TCSR clock controller on Hawi devices.
+	  Say Y if you want to use peripheral devices such as PCIe, USB, UFS.
+
 config APQ_GCC_8084
 	tristate "APQ8084 Global Clock Controller"
 	depends on ARM || COMPILE_TEST
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 103d6c4b860c..e85ed6678e51 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_CLK_GLYMUR_GCC) += gcc-glymur.o
 obj-$(CONFIG_CLK_GLYMUR_GPUCC) += gpucc-glymur.o gxclkctl-kaanapali.o
 obj-$(CONFIG_CLK_GLYMUR_TCSRCC) += tcsrcc-glymur.o
 obj-$(CONFIG_CLK_GLYMUR_VIDEOCC) += videocc-glymur.o
+obj-$(CONFIG_CLK_HAWI_TCSRCC) += tcsrcc-hawi.o
 obj-$(CONFIG_CLK_KAANAPALI_CAMCC) += cambistmclkcc-kaanapali.o camcc-kaanapali.o
 obj-$(CONFIG_CLK_KAANAPALI_DISPCC) += dispcc-kaanapali.o
 obj-$(CONFIG_CLK_KAANAPALI_GCC) += gcc-kaanapali.o
diff --git a/drivers/clk/qcom/tcsrcc-hawi.c b/drivers/clk/qcom/tcsrcc-hawi.c
new file mode 100644
index 000000000000..c942b0c8e09f
--- /dev/null
+++ b/drivers/clk/qcom/tcsrcc-hawi.c
@@ -0,0 +1,158 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,hawi-tcsrcc.h>
+
+#include "clk-alpha-pll.h"
+#include "clk-branch.h"
+#include "clk-pll.h"
+#include "clk-rcg.h"
+#include "clk-regmap.h"
+#include "clk-regmap-divider.h"
+#include "clk-regmap-mux.h"
+#include "common.h"
+#include "reset.h"
+
+enum {
+	DT_BI_TCXO_PAD,
+};
+
+static struct clk_branch tcsr_pcie_0_clkref_en = {
+	.halt_reg = 0x4c,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x4c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "tcsr_pcie_0_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_pcie_1_clkref_en = {
+	.halt_reg = 0x0,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x0,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "tcsr_pcie_1_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_ufs_clkref_en = {
+	.halt_reg = 0x10,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x10,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "tcsr_ufs_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_usb2_clkref_en = {
+	.halt_reg = 0x18,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x18,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "tcsr_usb2_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch tcsr_usb3_clkref_en = {
+	.halt_reg = 0x8,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x8,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "tcsr_usb3_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.index = DT_BI_TCXO_PAD,
+			},
+			.num_parents = 1,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_regmap *tcsr_cc_hawi_clocks[] = {
+	[TCSR_PCIE_0_CLKREF_EN] = &tcsr_pcie_0_clkref_en.clkr,
+	[TCSR_PCIE_1_CLKREF_EN] = &tcsr_pcie_1_clkref_en.clkr,
+	[TCSR_UFS_CLKREF_EN] = &tcsr_ufs_clkref_en.clkr,
+	[TCSR_USB2_CLKREF_EN] = &tcsr_usb2_clkref_en.clkr,
+	[TCSR_USB3_CLKREF_EN] = &tcsr_usb3_clkref_en.clkr,
+};
+
+static const struct regmap_config tcsr_cc_hawi_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.max_register = 0x4c,
+	.fast_io = true,
+};
+
+static const struct qcom_cc_desc tcsr_cc_hawi_desc = {
+	.config = &tcsr_cc_hawi_regmap_config,
+	.clks = tcsr_cc_hawi_clocks,
+	.num_clks = ARRAY_SIZE(tcsr_cc_hawi_clocks),
+};
+
+static const struct of_device_id tcsr_cc_hawi_match_table[] = {
+	{ .compatible = "qcom,hawi-tcsrcc" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tcsr_cc_hawi_match_table);
+
+static int tcsr_cc_hawi_probe(struct platform_device *pdev)
+{
+	return qcom_cc_probe(pdev, &tcsr_cc_hawi_desc);
+}
+
+static struct platform_driver tcsr_cc_hawi_driver = {
+	.probe = tcsr_cc_hawi_probe,
+	.driver = {
+		.name = "tcsrcc-hawi",
+		.of_match_table = tcsr_cc_hawi_match_table,
+	},
+};
+
+module_platform_driver(tcsr_cc_hawi_driver);
+
+MODULE_DESCRIPTION("QTI TCSRCC HAWI Driver");
+MODULE_LICENSE("GPL");

-- 
2.34.1

On 3/31/2026 6:05 AM, Vivek Aknurwar wrote:
> Add support for the TCSR clock controller found on Hawi SoCs.
> This controller provides reference clocks for various peripherals
> including PCIe, UFS, and USB.
> 
> Signed-off-by: Vivek Aknurwar <vivek.aknurwar@oss.qualcomm.com>
> ---
>  drivers/clk/qcom/Kconfig       |   7 ++
>  drivers/clk/qcom/Makefile      |   1 +
>  drivers/clk/qcom/tcsrcc-hawi.c | 158 +++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 166 insertions(+)

Reviewed-by: Taniya Das <taniya.das@oss.qualcomm.com>

-- 
Thanks,
Taniya Das