Commit 80676185 authored by Taniya Das's avatar Taniya Das Committed by Bjorn Andersson
Browse files

clk: qcom: Add TCSR clock driver for SM8750 



The TCSR clock controller found on SM8750 provides refclks
for PCIE, USB and UFS. Add clock driver for it.

Signed-off-by: default avatarMelody Olvera <quic_molvera@quicinc.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarTaniya Das <quic_tdas@quicinc.com>
Link: https://lore.kernel.org/r/20241204-sm8750_master_clks-v3-8-1a8f31a53a86@quicinc.com


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent 3267c774

drivers/clk/qcom/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -1274,6 +1274,14 @@ config SM_TCSRCC_8650 
	  Support for the TCSR clock controller on SM8650 devices.

	  Say Y if you want to use peripheral devices such as SD/UFS.



config SM_TCSRCC_8750

	tristate "SM8750 TCSR Clock Controller"

	depends on ARM64 || COMPILE_TEST

	select QCOM_GDSC

	help

	  Support for the TCSR clock controller on SM8750 devices.

	  Say Y if you want to use peripheral devices such as UFS/USB/PCIe.



config SA_VIDEOCC_8775P

	tristate "SA8775P Video Clock Controller"

	depends on ARM64 || COMPILE_TEST

drivers/clk/qcom/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -159,6 +159,7 @@ obj-$(CONFIG_SM_GPUCC_8550) += gpucc-sm8550.o 
obj-$(CONFIG_SM_GPUCC_8650) += gpucc-sm8650.o

obj-$(CONFIG_SM_TCSRCC_8550) += tcsrcc-sm8550.o

obj-$(CONFIG_SM_TCSRCC_8650) += tcsrcc-sm8650.o

obj-$(CONFIG_SM_TCSRCC_8750) += tcsrcc-sm8750.o

obj-$(CONFIG_SM_VIDEOCC_7150) += videocc-sm7150.o

obj-$(CONFIG_SM_VIDEOCC_8150) += videocc-sm8150.o

obj-$(CONFIG_SM_VIDEOCC_8250) += videocc-sm8250.o

drivers/clk/qcom/tcsrcc-sm8750.c

0 → 100644
+141 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

/*

 * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.

 */



#include <linux/clk-provider.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/regmap.h>



#include <dt-bindings/clock/qcom,sm8750-tcsr.h>



#include "clk-branch.h"

#include "clk-regmap.h"

#include "clk-regmap-divider.h"

#include "clk-regmap-mux.h"

#include "common.h"



enum {

	DT_BI_TCXO_PAD,

};



static struct clk_branch tcsr_pcie_0_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_0_clkref_en",

			.ops = &clk_branch2_ops,

		},

	},

};



static struct clk_branch tcsr_ufs_clkref_en = {

	.halt_reg = 0x1000,

	.halt_check = BRANCH_HALT_DELAY,

	.clkr = {

		.enable_reg = 0x1000,

		.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 = 0x2000,

	.halt_check = BRANCH_HALT_DELAY,

	.clkr = {

		.enable_reg = 0x2000,

		.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 = 0x3000,

	.halt_check = BRANCH_HALT_DELAY,

	.clkr = {

		.enable_reg = 0x3000,

		.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_sm8750_clocks[] = {

	[TCSR_PCIE_0_CLKREF_EN] = &tcsr_pcie_0_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_sm8750_regmap_config = {

	.reg_bits = 32,

	.reg_stride = 4,

	.val_bits = 32,

	.max_register = 0x3000,

	.fast_io = true,

};



static const struct qcom_cc_desc tcsr_cc_sm8750_desc = {

	.config = &tcsr_cc_sm8750_regmap_config,

	.clks = tcsr_cc_sm8750_clocks,

	.num_clks = ARRAY_SIZE(tcsr_cc_sm8750_clocks),

};



static const struct of_device_id tcsr_cc_sm8750_match_table[] = {

	{ .compatible = "qcom,sm8750-tcsr" },

	{ }

};

MODULE_DEVICE_TABLE(of, tcsr_cc_sm8750_match_table);



static int tcsr_cc_sm8750_probe(struct platform_device *pdev)

{

	return qcom_cc_probe(pdev, &tcsr_cc_sm8750_desc);

}



static struct platform_driver tcsr_cc_sm8750_driver = {

	.probe = tcsr_cc_sm8750_probe,

	.driver = {

		.name = "tcsr_cc-sm8750",

		.of_match_table = tcsr_cc_sm8750_match_table,

	},

};



static int __init tcsr_cc_sm8750_init(void)

{

	return platform_driver_register(&tcsr_cc_sm8750_driver);

}

subsys_initcall(tcsr_cc_sm8750_init);



static void __exit tcsr_cc_sm8750_exit(void)

{

	platform_driver_unregister(&tcsr_cc_sm8750_driver);

}

module_exit(tcsr_cc_sm8750_exit);



MODULE_DESCRIPTION("QTI TCSR_CC SM8750 Driver");

MODULE_LICENSE("GPL");