[PATCH v4 3/4] clk: qcom: Add MSM8916 gpu clocks

[Georgi Djakov <georgi.djakov@linaro.org>]

Add support for the msm8916 BIMC (Bus Integrated Memory Controller)
clocks that are needed for GPU.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
---
 drivers/clk/qcom/gcc-msm8916.c               |   61 ++++++++++++++++++++++++++
 include/dt-bindings/clock/qcom,gcc-msm8916.h |    3 ++
 2 files changed, 64 insertions(+)

diff --git a/drivers/clk/qcom/gcc-msm8916.c b/drivers/clk/qcom/gcc-msm8916.c
index ad9316751eb2..bd87a3e2cbeb 100644
--- a/drivers/clk/qcom/gcc-msm8916.c
+++ b/drivers/clk/qcom/gcc-msm8916.c
@@ -1083,6 +1083,30 @@ static struct clk_rcg2 apss_tcu_clk_src = {
 	},
 };
 
+static const struct freq_tbl ftbl_gcc_bimc_gpu_clk[] = {
+	F(19200000, P_XO, 1, 0, 0),
+	F(100000000, P_GPLL0, 8, 0, 0),
+	F(200000000, P_GPLL0, 4, 0, 0),
+	F(266500000, P_BIMC, 4, 0, 0),
+	F(400000000, P_GPLL0, 2, 0, 0),
+	F(533000000, P_BIMC, 2, 0, 0),
+	{ }
+};
+
+static struct clk_rcg2 bimc_gpu_clk_src = {
+	.cmd_rcgr = 0x31028,
+	.hid_width = 5,
+	.parent_map = gcc_xo_gpll0_bimc_map,
+	.freq_tbl = ftbl_gcc_bimc_gpu_clk,
+	.clkr.hw.init = &(struct clk_init_data){
+		.name = "bimc_gpu_clk_src",
+		.parent_names = gcc_xo_gpll0_bimc,
+		.num_parents = 3,
+		.flags = CLK_GET_RATE_NOCACHE,
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
 static const struct freq_tbl ftbl_gcc_usb_hs_system_clk[] = {
 	F(80000000, P_GPLL0, 10, 0, 0),
 	{ }
@@ -2409,6 +2433,40 @@ static struct clk_branch gcc_gtcu_ahb_clk = {
 	},
 };
 
+static struct clk_branch gcc_bimc_gfx_clk = {
+	.halt_reg = 0x31024,
+	.clkr = {
+		.enable_reg = 0x31024,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "gcc_bimc_gfx_clk",
+			.parent_names = (const char *[]){
+				"bimc_gpu_clk_src",
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch gcc_bimc_gpu_clk = {
+	.halt_reg = 0x31040,
+	.clkr = {
+		.enable_reg = 0x31040,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "gcc_bimc_gpu_clk",
+			.parent_names = (const char *[]){
+				"bimc_gpu_clk_src",
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
 static struct clk_branch gcc_jpeg_tbu_clk = {
 	.halt_reg = 0x12034,
 	.clkr = {
@@ -2778,6 +2836,9 @@ static struct clk_regmap *gcc_msm8916_clocks[] = {
 	[BIMC_DDR_CLK_SRC] = &bimc_ddr_clk_src.clkr,
 	[GCC_APSS_TCU_CLK] = &gcc_apss_tcu_clk.clkr,
 	[GCC_GFX_TCU_CLK] = &gcc_gfx_tcu_clk.clkr,
+	[BIMC_GPU_CLK_SRC] = &bimc_gpu_clk_src.clkr,
+	[GCC_BIMC_GFX_CLK] = &gcc_bimc_gfx_clk.clkr,
+	[GCC_BIMC_GPU_CLK] = &gcc_bimc_gpu_clk.clkr,
 };
 
 static struct gdsc *gcc_msm8916_gdscs[] = {
diff --git a/include/dt-bindings/clock/qcom,gcc-msm8916.h b/include/dt-bindings/clock/qcom,gcc-msm8916.h
index 9169ae656c77..d21501bb3d52 100644
--- a/include/dt-bindings/clock/qcom,gcc-msm8916.h
+++ b/include/dt-bindings/clock/qcom,gcc-msm8916.h
@@ -155,6 +155,9 @@
 #define BIMC_DDR_CLK_SRC			138
 #define GCC_APSS_TCU_CLK			139
 #define GCC_GFX_TCU_CLK				140
+#define BIMC_GPU_CLK_SRC			141
+#define GCC_BIMC_GFX_CLK			142
+#define GCC_BIMC_GPU_CLK			143
 
 /* Indexes for GDSCs */
 #define BIMC_GDSC				0