clk: qcom: Add TCSR clock driver for Nord SoC

Add a clock driver for the TCSR clock controller found on Nord SoC,
which provides refclks for PCIE, USB, SGMII, UFS subsystems.

[Shawn:
- Use compatible qcom,nord-tcsrcc
- Drop include of <linux/of.h> as the driver doesn't use any OF APIs]

Signed-off-by: Taniya Das <taniya.das@oss.qualcomm.com>
Co-developed-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
Signed-off-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260403-nord-clks-v1-4-018af14979fd@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 460ce8ac06bd3fb84eca406494d5725e3ed64e10..e284b1cd01ee94832991534782d52813f60132c0 100644 (file)
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -674,6 +674,13 @@ config QCS_GCC_404
          Say Y if you want to use multimedia devices or peripheral
          devices such as UART, SPI, I2C, USB, SD/eMMC, PCIe etc.
 
+config CLK_NORD_TCSRCC
+       tristate "Nord TCSR Clock Controller"
+       depends on ARM64 || COMPILE_TEST
+       help
+         Support for the TCSR clock controller on Nord devices.
+         Say Y if you want to use peripheral devices such as PCIe, USB, UFS etc.
+
 config SA_CAMCC_8775P
        tristate "SA8775P Camera Clock Controller"
        depends on ARM64 || COMPILE_TEST

diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index b818fd5af8bfb85a51ee90fdc3baa93af30dc39a..fa50d7b6e34650d5a743bb239476b995983443b0 100644 (file)
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -35,6 +35,7 @@ obj-$(CONFIG_CLK_KAANAPALI_GCC) += gcc-kaanapali.o
 obj-$(CONFIG_CLK_KAANAPALI_GPUCC) += gpucc-kaanapali.o gxclkctl-kaanapali.o
 obj-$(CONFIG_CLK_KAANAPALI_TCSRCC) += tcsrcc-kaanapali.o
 obj-$(CONFIG_CLK_KAANAPALI_VIDEOCC) += videocc-kaanapali.o
+obj-$(CONFIG_CLK_NORD_TCSRCC) += tcsrcc-nord.o
 obj-$(CONFIG_CLK_X1E80100_CAMCC) += camcc-x1e80100.o
 obj-$(CONFIG_CLK_X1E80100_DISPCC) += dispcc-x1e80100.o
 obj-$(CONFIG_CLK_X1E80100_GCC) += gcc-x1e80100.o

diff --git a/drivers/clk/qcom/tcsrcc-nord.c b/drivers/clk/qcom/tcsrcc-nord.c
new file mode 100644 (file)
index 0000000..ed0f490
--- /dev/null
+++ b/drivers/clk/qcom/tcsrcc-nord.c
@@ -0,0 +1,337 @@
+// 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/platform_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,nord-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_dp_rx_0_clkref_en = {
+       .halt_reg = 0xa008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0xa008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_dp_rx_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_dp_rx_1_clkref_en = {
+       .halt_reg = 0xb008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0xb008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_dp_rx_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_dp_tx_0_clkref_en = {
+       .halt_reg = 0xc008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0xc008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_dp_tx_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_dp_tx_1_clkref_en = {
+       .halt_reg = 0xd008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0xd008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_dp_tx_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_dp_tx_2_clkref_en = {
+       .halt_reg = 0xe008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0xe008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_dp_tx_2_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_dp_tx_3_clkref_en = {
+       .halt_reg = 0xf008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0xf008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_dp_tx_3_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_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_pcie_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 = 0x3008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0x3008,
+               .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_0_clkref_en = {
+       .halt_reg = 0x4008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0x4008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_usb2_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_usb2_1_clkref_en = {
+       .halt_reg = 0x5008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0x5008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_usb2_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_usb2_2_clkref_en = {
+       .halt_reg = 0x6008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0x6008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_usb2_2_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_0_clkref_en = {
+       .halt_reg = 0x8008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0x8008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_usb3_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_usb3_1_clkref_en = {
+       .halt_reg = 0x7008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0x7008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_usb3_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_ux_sgmii_0_clkref_en = {
+       .halt_reg = 0x1008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0x1008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_ux_sgmii_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_ux_sgmii_1_clkref_en = {
+       .halt_reg = 0x2008,
+       .halt_check = BRANCH_HALT_DELAY,
+       .clkr = {
+               .enable_reg = 0x2008,
+               .enable_mask = BIT(0),
+               .hw.init = &(const struct clk_init_data) {
+                       .name = "tcsr_ux_sgmii_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_regmap *tcsr_cc_nord_clocks[] = {
+       [TCSR_DP_RX_0_CLKREF_EN] = &tcsr_dp_rx_0_clkref_en.clkr,
+       [TCSR_DP_RX_1_CLKREF_EN] = &tcsr_dp_rx_1_clkref_en.clkr,
+       [TCSR_DP_TX_0_CLKREF_EN] = &tcsr_dp_tx_0_clkref_en.clkr,
+       [TCSR_DP_TX_1_CLKREF_EN] = &tcsr_dp_tx_1_clkref_en.clkr,
+       [TCSR_DP_TX_2_CLKREF_EN] = &tcsr_dp_tx_2_clkref_en.clkr,
+       [TCSR_DP_TX_3_CLKREF_EN] = &tcsr_dp_tx_3_clkref_en.clkr,
+       [TCSR_PCIE_CLKREF_EN] = &tcsr_pcie_clkref_en.clkr,
+       [TCSR_UFS_CLKREF_EN] = &tcsr_ufs_clkref_en.clkr,
+       [TCSR_USB2_0_CLKREF_EN] = &tcsr_usb2_0_clkref_en.clkr,
+       [TCSR_USB2_1_CLKREF_EN] = &tcsr_usb2_1_clkref_en.clkr,
+       [TCSR_USB2_2_CLKREF_EN] = &tcsr_usb2_2_clkref_en.clkr,
+       [TCSR_USB3_0_CLKREF_EN] = &tcsr_usb3_0_clkref_en.clkr,
+       [TCSR_USB3_1_CLKREF_EN] = &tcsr_usb3_1_clkref_en.clkr,
+       [TCSR_UX_SGMII_0_CLKREF_EN] = &tcsr_ux_sgmii_0_clkref_en.clkr,
+       [TCSR_UX_SGMII_1_CLKREF_EN] = &tcsr_ux_sgmii_1_clkref_en.clkr,
+};
+
+static const struct regmap_config tcsr_cc_nord_regmap_config = {
+       .reg_bits = 32,
+       .reg_stride = 4,
+       .val_bits = 32,
+       .max_register = 0xf008,
+       .fast_io = true,
+};
+
+static const struct qcom_cc_desc tcsr_cc_nord_desc = {
+       .config = &tcsr_cc_nord_regmap_config,
+       .clks = tcsr_cc_nord_clocks,
+       .num_clks = ARRAY_SIZE(tcsr_cc_nord_clocks),
+};
+
+static const struct of_device_id tcsr_cc_nord_match_table[] = {
+       { .compatible = "qcom,nord-tcsrcc" },
+       { }
+};
+MODULE_DEVICE_TABLE(of, tcsr_cc_nord_match_table);
+
+static int tcsr_cc_nord_probe(struct platform_device *pdev)
+{
+       return qcom_cc_probe(pdev, &tcsr_cc_nord_desc);
+}
+
+static struct platform_driver tcsr_cc_nord_driver = {
+       .probe = tcsr_cc_nord_probe,
+       .driver = {
+               .name = "tcsrcc-nord",
+               .of_match_table = tcsr_cc_nord_match_table,
+       },
+};
+
+module_platform_driver(tcsr_cc_nord_driver);
+
+MODULE_DESCRIPTION("QTI TCSRCC NORD Driver");
+MODULE_LICENSE("GPL");