[PATCH v6 07/10] clk: qcom: gpucc-qcs615: Add QCS615 graphics clock controller driver

Taniya Das posted 10 patches 11 months ago
There is a newer version of this series
[PATCH v6 07/10] clk: qcom: gpucc-qcs615: Add QCS615 graphics clock controller driver
Posted by Taniya Das 11 months ago
Add support for the graphics clock controller for graphics clients to
be able to request for the clocks on QCS615 platform.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Taniya Das <quic_tdas@quicinc.com>
---
 drivers/clk/qcom/Kconfig        |   9 +
 drivers/clk/qcom/Makefile       |   1 +
 drivers/clk/qcom/gpucc-qcs615.c | 525 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 535 insertions(+)

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index f6cd8c1cfe5179f5bcd4df6506581336ea22717b..4b74f44ebdbf2f1cec83d311e004ce18091350c8 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -542,6 +542,15 @@ config QCS_GCC_615
 	  Say Y if you want to use multimedia devices or peripheral
 	  devices such as UART, SPI, I2C, USB, SD/eMMC, PCIe etc.
 
+config QCS_GPUCC_615
+	tristate "QCS615 Graphics clock controller"
+	depends on ARM64 || COMPILE_TEST
+	select QCS_GCC_615
+	help
+	  Support for the graphics clock controller on QCS615 devices.
+	  Say Y if you want to support graphics controller devices and
+	  functionality such as 3D graphics.
+
 config SC_CAMCC_7180
 	tristate "SC7180 Camera Clock Controller"
 	depends on ARM64 || COMPILE_TEST
diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index 5ddf1655cb83a6f27c57a234c175db2e659b9683..f9497e00d4fef8af05865a235fbb833fe6735528 100644
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -77,6 +77,7 @@ obj-$(CONFIG_QCS_CAMCC_615) += camcc-qcs615.o
 obj-$(CONFIG_QCS_GCC_404) += gcc-qcs404.o
 obj-$(CONFIG_QCS_GCC_615) += gcc-qcs615.o
 obj-$(CONFIG_QCS_GCC_8300) += gcc-qcs8300.o
+obj-$(CONFIG_QCS_GPUCC_615) += gpucc-qcs615.o
 obj-$(CONFIG_QCS_Q6SSTOP_404) += q6sstop-qcs404.o
 obj-$(CONFIG_QCS_TURING_404) += turingcc-qcs404.o
 obj-$(CONFIG_QDU_ECPRICC_1000) += ecpricc-qdu1000.o
diff --git a/drivers/clk/qcom/gpucc-qcs615.c b/drivers/clk/qcom/gpucc-qcs615.c
new file mode 100644
index 0000000000000000000000000000000000000000..a984180fcad3694bc9983582a5246b16ea702dc9
--- /dev/null
+++ b/drivers/clk/qcom/gpucc-qcs615.c
@@ -0,0 +1,525 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,qcs615-gpucc.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 "gdsc.h"
+#include "reset.h"
+
+enum {
+	DT_BI_TCXO,
+	DT_GPLL0_OUT_MAIN,
+	DT_GPLL0_OUT_MAIN_DIV,
+};
+
+enum {
+	P_BI_TCXO,
+	P_GPLL0_OUT_MAIN,
+	P_GPLL0_OUT_MAIN_DIV,
+	P_GPU_CC_PLL0_2X_CLK,
+	P_CRC_DIV_PLL0_OUT_AUX2,
+	P_GPU_CC_PLL0_OUT_MAIN,
+	P_GPU_CC_PLL1_OUT_AUX,
+	P_CRC_DIV_PLL1_OUT_AUX2,
+	P_GPU_CC_PLL1_OUT_MAIN,
+};
+
+static const struct pll_vco gpu_cc_pll0_vco[] = {
+	{ 1000000000, 2100000000, 0 },
+};
+
+static struct pll_vco gpu_cc_pll1_vco[] = {
+	{ 500000000,  1000000000, 2 },
+};
+
+/* 1020MHz configuration VCO - 0 */
+static struct alpha_pll_config gpu_cc_pll0_config = {
+	.l = 0x35,
+	.config_ctl_val = 0x4001055b,
+	.test_ctl_hi_val = 0x1,
+	.test_ctl_hi_mask = 0x1,
+	.alpha_hi = 0x20,
+	.alpha = 0x00,
+	.alpha_en_mask = BIT(24),
+	.vco_val = 0x0,
+	.vco_mask = GENMASK(21, 20),
+	.aux2_output_mask = BIT(2),
+};
+
+static struct clk_alpha_pll gpu_cc_pll0 = {
+	.offset = 0x0,
+	.vco_table = gpu_cc_pll0_vco,
+	.num_vco = ARRAY_SIZE(gpu_cc_pll0_vco),
+	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT],
+	.clkr = {
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_pll0",
+			.parent_data = &(const struct clk_parent_data) {
+				.index = DT_BI_TCXO,
+			},
+			.num_parents = 1,
+			.ops = &clk_alpha_pll_slew_ops,
+		},
+	},
+};
+
+/* 930MHz configuration VCO - 2 */
+static struct alpha_pll_config gpu_cc_pll1_config = {
+	.l = 0x30,
+	.config_ctl_val = 0x4001055b,
+	.test_ctl_hi_val = 0x1,
+	.test_ctl_hi_mask = 0x1,
+	.alpha_hi = 0x70,
+	.alpha = 0x00,
+	.alpha_en_mask = BIT(24),
+	.vco_val = BIT(21),
+	.vco_mask = GENMASK(21, 20),
+	.aux2_output_mask = BIT(2),
+};
+
+static struct clk_alpha_pll gpu_cc_pll1 = {
+	.offset = 0x100,
+	.vco_table = gpu_cc_pll1_vco,
+	.num_vco = ARRAY_SIZE(gpu_cc_pll1_vco),
+	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_DEFAULT],
+	.clkr = {
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_pll1",
+			.parent_data = &(const struct clk_parent_data) {
+				.index = DT_BI_TCXO,
+			},
+			.num_parents = 1,
+			.ops = &clk_alpha_pll_slew_ops,
+		},
+	}
+};
+
+/* Clock Ramp Controller */
+static struct clk_fixed_factor crc_div_pll0 = {
+	.mult = 1,
+	.div = 2,
+	.hw.init = &(struct clk_init_data){
+		.name = "crc_div_pll0",
+			.parent_data = &(const struct clk_parent_data){
+				.hw = &gpu_cc_pll0.clkr.hw,
+			},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_fixed_factor_ops,
+	},
+};
+
+/* Clock Ramp Controller */
+static struct clk_fixed_factor crc_div_pll1 = {
+	.mult = 1,
+	.div = 2,
+	.hw.init = &(struct clk_init_data){
+		.name = "crc_div_pll1",
+			.parent_data = &(const struct clk_parent_data){
+				.hw = &gpu_cc_pll1.clkr.hw,
+			},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_fixed_factor_ops,
+	},
+};
+
+static const struct parent_map gpu_cc_parent_map_0[] = {
+	{ P_BI_TCXO, 0 },
+	{ P_GPU_CC_PLL0_OUT_MAIN, 1 },
+	{ P_GPU_CC_PLL1_OUT_MAIN, 3 },
+	{ P_GPLL0_OUT_MAIN, 5 },
+	{ P_GPLL0_OUT_MAIN_DIV, 6 },
+};
+
+static const struct clk_parent_data gpu_cc_parent_data_0[] = {
+	{ .index = DT_BI_TCXO },
+	{ .hw = &gpu_cc_pll0.clkr.hw },
+	{ .hw = &gpu_cc_pll1.clkr.hw },
+	{ .index = DT_GPLL0_OUT_MAIN },
+	{ .index = DT_GPLL0_OUT_MAIN_DIV },
+};
+
+static const struct parent_map gpu_cc_parent_map_1[] = {
+	{ P_BI_TCXO, 0 },
+	{ P_GPU_CC_PLL0_2X_CLK, 1 },
+	{ P_CRC_DIV_PLL0_OUT_AUX2, 2 },
+	{ P_GPU_CC_PLL1_OUT_AUX, 3 },
+	{ P_CRC_DIV_PLL1_OUT_AUX2, 4 },
+	{ P_GPLL0_OUT_MAIN, 5 },
+};
+
+static const struct clk_parent_data gpu_cc_parent_data_1[] = {
+	{ .index = DT_BI_TCXO },
+	{ .hw = &gpu_cc_pll0.clkr.hw },
+	{ .hw = &crc_div_pll0.hw },
+	{ .hw = &gpu_cc_pll1.clkr.hw },
+	{ .hw = &crc_div_pll1.hw },
+	{ .index = DT_GPLL0_OUT_MAIN },
+};
+
+static const struct freq_tbl ftbl_gpu_cc_gmu_clk_src[] = {
+	F(200000000, P_GPLL0_OUT_MAIN, 3, 0, 0),
+	{ }
+};
+
+static struct clk_rcg2 gpu_cc_gmu_clk_src = {
+	.cmd_rcgr = 0x1120,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = gpu_cc_parent_map_0,
+	.freq_tbl = ftbl_gpu_cc_gmu_clk_src,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "gpu_cc_gmu_clk_src",
+		.parent_data = gpu_cc_parent_data_0,
+		.num_parents = ARRAY_SIZE(gpu_cc_parent_data_0),
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
+static const struct freq_tbl ftbl_gpu_cc_gx_gfx3d_clk_src[] = {
+	F(290000000, P_CRC_DIV_PLL1_OUT_AUX2, 1, 0, 0),
+	F(350000000, P_CRC_DIV_PLL1_OUT_AUX2, 1, 0, 0),
+	F(435000000, P_CRC_DIV_PLL1_OUT_AUX2, 1, 0, 0),
+	F(500000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
+	F(550000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
+	F(650000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
+	F(700000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
+	F(745000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
+	F(845000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
+	F(895000000, P_CRC_DIV_PLL0_OUT_AUX2, 1, 0, 0),
+	{ }
+};
+
+static struct clk_rcg2 gpu_cc_gx_gfx3d_clk_src = {
+	.cmd_rcgr = 0x101c,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = gpu_cc_parent_map_1,
+	.freq_tbl = ftbl_gpu_cc_gx_gfx3d_clk_src,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "gpu_cc_gx_gfx3d_clk_src",
+		.parent_data = gpu_cc_parent_data_1,
+		.num_parents = ARRAY_SIZE(gpu_cc_parent_data_1),
+		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
+static struct clk_branch gpu_cc_crc_ahb_clk = {
+	.halt_reg = 0x107c,
+	.halt_check = BRANCH_HALT_VOTED,
+	.clkr = {
+		.enable_reg = 0x107c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_crc_ahb_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_cx_gfx3d_clk = {
+	.halt_reg = 0x10a4,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x10a4,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_cx_gfx3d_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&gpu_cc_gx_gfx3d_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_cx_gfx3d_slv_clk = {
+	.halt_reg = 0x10a8,
+	.halt_check = BRANCH_HALT_DELAY,
+	.clkr = {
+		.enable_reg = 0x10a8,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_cx_gfx3d_slv_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&gpu_cc_gx_gfx3d_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_cx_gmu_clk = {
+	.halt_reg = 0x1098,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x1098,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_cx_gmu_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&gpu_cc_gmu_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_cx_snoc_dvm_clk = {
+	.halt_reg = 0x108c,
+	.halt_check = BRANCH_HALT_VOTED,
+	.clkr = {
+		.enable_reg = 0x108c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_cx_snoc_dvm_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_cxo_aon_clk = {
+	.halt_reg = 0x1004,
+	.halt_check = BRANCH_HALT_VOTED,
+	.clkr = {
+		.enable_reg = 0x1004,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "gpu_cc_cxo_aon_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_cxo_clk = {
+	.halt_reg = 0x109c,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x109c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_cxo_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_gx_gfx3d_clk = {
+	.halt_reg = 0x1054,
+	.halt_check = BRANCH_HALT_SKIP,
+	.clkr = {
+		.enable_reg = 0x1054,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_gx_gfx3d_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&gpu_cc_gx_gfx3d_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_gx_gmu_clk = {
+	.halt_reg = 0x1064,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x1064,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_gx_gmu_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&gpu_cc_gmu_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_hlos1_vote_gpu_smmu_clk = {
+	.halt_reg = 0x5000,
+	.halt_check = BRANCH_VOTED,
+	.clkr = {
+		.enable_reg = 0x5000,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_hlos1_vote_gpu_smmu_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gpu_cc_sleep_clk = {
+	.halt_reg = 0x1090,
+	.halt_check = BRANCH_HALT_VOTED,
+	.clkr = {
+		.enable_reg = 0x1090,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "gpu_cc_sleep_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_hw *gpu_cc_qcs615_hws[] = {
+	[CRC_DIV_PLL0] = &crc_div_pll0.hw,
+	[CRC_DIV_PLL1] = &crc_div_pll1.hw,
+};
+
+static struct gdsc cx_gdsc = {
+	.gdscr = 0x106c,
+	.gds_hw_ctrl = 0x1540,
+	.en_rest_wait_val = 0x2,
+	.en_few_wait_val = 0x2,
+	.clk_dis_wait_val = 0x8,
+	.pd = {
+		.name = "cx_gdsc",
+	},
+	.pwrsts = PWRSTS_OFF_ON,
+	.flags = POLL_CFG_GDSCR,
+};
+
+static struct gdsc gx_gdsc = {
+	.gdscr = 0x100c,
+	.en_rest_wait_val = 0x2,
+	.en_few_wait_val = 0x2,
+	.clk_dis_wait_val = 0x2,
+	.pd = {
+		.name = "gx_gdsc",
+	},
+	.pwrsts = PWRSTS_OFF_ON,
+	.flags = POLL_CFG_GDSCR,
+};
+
+static struct clk_regmap *gpu_cc_qcs615_clocks[] = {
+	[GPU_CC_CRC_AHB_CLK] = &gpu_cc_crc_ahb_clk.clkr,
+	[GPU_CC_CX_GFX3D_CLK] = &gpu_cc_cx_gfx3d_clk.clkr,
+	[GPU_CC_CX_GFX3D_SLV_CLK] = &gpu_cc_cx_gfx3d_slv_clk.clkr,
+	[GPU_CC_CX_GMU_CLK] = &gpu_cc_cx_gmu_clk.clkr,
+	[GPU_CC_CX_SNOC_DVM_CLK] = &gpu_cc_cx_snoc_dvm_clk.clkr,
+	[GPU_CC_CXO_AON_CLK] = &gpu_cc_cxo_aon_clk.clkr,
+	[GPU_CC_CXO_CLK] = &gpu_cc_cxo_clk.clkr,
+	[GPU_CC_GMU_CLK_SRC] = &gpu_cc_gmu_clk_src.clkr,
+	[GPU_CC_GX_GFX3D_CLK] = &gpu_cc_gx_gfx3d_clk.clkr,
+	[GPU_CC_GX_GFX3D_CLK_SRC] = &gpu_cc_gx_gfx3d_clk_src.clkr,
+	[GPU_CC_GX_GMU_CLK] = &gpu_cc_gx_gmu_clk.clkr,
+	[GPU_CC_HLOS1_VOTE_GPU_SMMU_CLK] = &gpu_cc_hlos1_vote_gpu_smmu_clk.clkr,
+	[GPU_CC_PLL0] = &gpu_cc_pll0.clkr,
+	[GPU_CC_PLL1] = &gpu_cc_pll1.clkr,
+	[GPU_CC_SLEEP_CLK] = &gpu_cc_sleep_clk.clkr,
+};
+
+static struct gdsc *gpu_cc_qcs615_gdscs[] = {
+	[CX_GDSC] = &cx_gdsc,
+	[GX_GDSC] = &gx_gdsc,
+};
+
+static const struct qcom_reset_map gpu_cc_qcs615_resets[] = {
+	[GPU_CC_CX_BCR] = { 0x1068 },
+	[GPU_CC_GFX3D_AON_BCR] = { 0x10a0 },
+	[GPU_CC_GMU_BCR] = { 0x111c },
+	[GPU_CC_GX_BCR] = { 0x1008 },
+	[GPU_CC_XO_BCR] = { 0x1000 },
+};
+
+static const struct regmap_config gpu_cc_qcs615_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.max_register = 0x7008,
+	.fast_io = true,
+};
+
+static const struct qcom_cc_desc gpu_cc_qcs615_desc = {
+	.config = &gpu_cc_qcs615_regmap_config,
+	.clks = gpu_cc_qcs615_clocks,
+	.num_clks = ARRAY_SIZE(gpu_cc_qcs615_clocks),
+	.clk_hws = gpu_cc_qcs615_hws,
+	.num_clk_hws = ARRAY_SIZE(gpu_cc_qcs615_hws),
+	.resets = gpu_cc_qcs615_resets,
+	.num_resets = ARRAY_SIZE(gpu_cc_qcs615_resets),
+	.gdscs = gpu_cc_qcs615_gdscs,
+	.num_gdscs = ARRAY_SIZE(gpu_cc_qcs615_gdscs),
+};
+
+static const struct of_device_id gpu_cc_qcs615_match_table[] = {
+	{ .compatible = "qcom,qcs615-gpucc" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, gpu_cc_qcs615_match_table);
+
+static void configure_crc(struct regmap *regmap)
+{
+	/* Recommended WAKEUP/SLEEP settings for the gpu_cc_cx_gmu_clk */
+	regmap_update_bits(regmap, gpu_cc_cx_gmu_clk.clkr.enable_reg, 0xff0, 0xff0);
+
+	/*
+	 * After POR, Clock Ramp Controller(CRC) will be in bypass mode.
+	 * Software needs to do the following operation to enable the CRC
+	 * for GFX3D clock and divide the input clock by div by 2.
+	 */
+	regmap_update_bits(regmap, 0x1028, 0x00015011, 0x00015011);
+	regmap_update_bits(regmap, 0x1024, 0x00800000, 0x00800000);
+}
+
+static int gpu_cc_qcs615_probe(struct platform_device *pdev)
+{
+	struct regmap *regmap;
+
+	regmap = qcom_cc_map(pdev, &gpu_cc_qcs615_desc);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	clk_alpha_pll_configure(&gpu_cc_pll0, regmap, &gpu_cc_pll0_config);
+	clk_alpha_pll_configure(&gpu_cc_pll1, regmap, &gpu_cc_pll1_config);
+
+	/* Keep some clocks always enabled */
+	qcom_branch_set_clk_en(regmap, 0x1078); /* GPU_CC_AHB_CLK */
+
+	configure_crc(regmap);
+
+	return qcom_cc_really_probe(&pdev->dev, &gpu_cc_qcs615_desc, regmap);
+}
+
+static struct platform_driver gpu_cc_qcs615_driver = {
+	.probe = gpu_cc_qcs615_probe,
+	.driver = {
+		.name = "gpucc-qcs615",
+		.of_match_table = gpu_cc_qcs615_match_table,
+	},
+};
+
+module_platform_driver(gpu_cc_qcs615_driver);
+
+MODULE_DESCRIPTION("QTI GPUCC QCS615 Driver");
+MODULE_LICENSE("GPL");

-- 
2.48.1