clk: qcom: Support msm8974pro global clock control hardware

A new PLL (gpll4) is added on msm8974 PRO devices to support a
faster sdc1 clock rate. Add support for this and the two new sdcc
cal clocks.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

3 files changed, 130 insertions, 6 deletions

diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc.txt b/Documentation/devicetree/bindings/clock/qcom,gcc.txt
index 7b7104e8cb1e..9cfcb4f2bc97 100644
--- a/Documentation/devicetree/bindings/clock/qcom,gcc.txt
+++ b/Documentation/devicetree/bindings/clock/qcom,gcc.txt
@@ -8,6 +8,8 @@ Required properties :
                         "qcom,gcc-msm8660"
                         "qcom,gcc-msm8960"
                         "qcom,gcc-msm8974"
+                        "qcom,gcc-msm8974pro"
+                        "qcom,gcc-msm8974pro-ac"
 
 - reg : shall contain base register location and length
 - #clock-cells : shall contain 1
diff --git a/drivers/clk/qcom/gcc-msm8974.c b/drivers/clk/qcom/gcc-msm8974.c
index 7a420fcdb89e..7af7c18d2144 100644
--- a/drivers/clk/qcom/gcc-msm8974.c
+++ b/drivers/clk/qcom/gcc-msm8974.c
@@ -35,6 +35,7 @@
 #define P_XO    0
 #define P_GPLL0 1
 #define P_GPLL1 1
+#define P_GPLL4 2
 
 static const u8 gcc_xo_gpll0_map[] = {
         [P_XO]          = 0,
@@ -46,6 +47,18 @@ static const char *gcc_xo_gpll0[] = {
         "gpll0_vote",
 };
 
+static const u8 gcc_xo_gpll0_gpll4_map[] = {
+        [P_XO]          = 0,
+        [P_GPLL0]       = 1,
+        [P_GPLL4]       = 5,
+};
+
+static const char *gcc_xo_gpll0_gpll4[] = {
+        "xo",
+        "gpll0_vote",
+        "gpll4_vote",
+};
+
 #define F(f, s, h, m, n) { (f), (s), (2 * (h) - 1), (m), (n) }
 
 static struct clk_pll gpll0 = {
@@ -138,6 +151,33 @@ static struct clk_regmap gpll1_vote = {
         },
 };
 
+static struct clk_pll gpll4 = {
+        .l_reg = 0x1dc4,
+        .m_reg = 0x1dc8,
+        .n_reg = 0x1dcc,
+        .config_reg = 0x1dd4,
+        .mode_reg = 0x1dc0,
+        .status_reg = 0x1ddc,
+        .status_bit = 17,
+        .clkr.hw.init = &(struct clk_init_data){
+                .name = "gpll4",
+                .parent_names = (const char *[]){ "xo" },
+                .num_parents = 1,
+                .ops = &clk_pll_ops,
+        },
+};
+
+static struct clk_regmap gpll4_vote = {
+        .enable_reg = 0x1480,
+        .enable_mask = BIT(4),
+        .hw.init = &(struct clk_init_data){
+                .name = "gpll4_vote",
+                .parent_names = (const char *[]){ "gpll4" },
+                .num_parents = 1,
+                .ops = &clk_pll_vote_ops,
+        },
+};
+
 static const struct freq_tbl ftbl_gcc_usb30_master_clk[] = {
         F(125000000, P_GPLL0, 1, 5, 24),
         { }
@@ -812,18 +852,33 @@ static const struct freq_tbl ftbl_gcc_sdcc1_4_apps_clk[] = {
         { }
 };
 
+static const struct freq_tbl ftbl_gcc_sdcc1_apps_clk_pro[] = {
+        F(144000, P_XO, 16, 3, 25),
+        F(400000, P_XO, 12, 1, 4),
+        F(20000000, P_GPLL0, 15, 1, 2),
+        F(25000000, P_GPLL0, 12, 1, 2),
+        F(50000000, P_GPLL0, 12, 0, 0),
+        F(100000000, P_GPLL0, 6, 0, 0),
+        F(192000000, P_GPLL4, 4, 0, 0),
+        F(200000000, P_GPLL0, 3, 0, 0),
+        F(384000000, P_GPLL4, 2, 0, 0),
+        { }
+};
+
+static struct clk_init_data sdcc1_apps_clk_src_init = {
+        .name = "sdcc1_apps_clk_src",
+        .parent_names = gcc_xo_gpll0,
+        .num_parents = 2,
+        .ops = &clk_rcg2_ops,
+};
+
 static struct clk_rcg2 sdcc1_apps_clk_src = {
         .cmd_rcgr = 0x04d0,
         .mnd_width = 8,
         .hid_width = 5,
         .parent_map = gcc_xo_gpll0_map,
         .freq_tbl = ftbl_gcc_sdcc1_4_apps_clk,
-        .clkr.hw.init = &(struct clk_init_data){
-                .name = "sdcc1_apps_clk_src",
-                .parent_names = gcc_xo_gpll0,
-                .num_parents = 2,
-                .ops = &clk_rcg2_ops,
-        },
+        .clkr.hw.init = &sdcc1_apps_clk_src_init,
 };
 
 static struct clk_rcg2 sdcc2_apps_clk_src = {
@@ -1995,6 +2050,38 @@ static struct clk_branch gcc_sdcc1_apps_clk = {
         },
 };
 
+static struct clk_branch gcc_sdcc1_cdccal_ff_clk = {
+        .halt_reg = 0x04e8,
+        .clkr = {
+                .enable_reg = 0x04e8,
+                .enable_mask = BIT(0),
+                .hw.init = &(struct clk_init_data){
+                        .name = "gcc_sdcc1_cdccal_ff_clk",
+                        .parent_names = (const char *[]){
+                                "xo"
+                        },
+                        .num_parents = 1,
+                        .ops = &clk_branch2_ops,
+                },
+        },
+};
+
+static struct clk_branch gcc_sdcc1_cdccal_sleep_clk = {
+        .halt_reg = 0x04e4,
+        .clkr = {
+                .enable_reg = 0x04e4,
+                .enable_mask = BIT(0),
+                .hw.init = &(struct clk_init_data){
+                        .name = "gcc_sdcc1_cdccal_sleep_clk",
+                        .parent_names = (const char *[]){
+                                "sleep_clk_src"
+                        },
+                        .num_parents = 1,
+                        .ops = &clk_branch2_ops,
+                },
+        },
+};
+
 static struct clk_branch gcc_sdcc2_ahb_clk = {
         .halt_reg = 0x0508,
         .clkr = {
@@ -2484,6 +2571,10 @@ static struct clk_regmap *gcc_msm8974_clocks[] = {
         [GCC_USB_HSIC_IO_CAL_SLEEP_CLK] = &gcc_usb_hsic_io_cal_sleep_clk.clkr,
         [GCC_USB_HSIC_SYSTEM_CLK] = &gcc_usb_hsic_system_clk.clkr,
         [GCC_MMSS_GPLL0_CLK_SRC] = &gcc_mmss_gpll0_clk_src,
+        [GPLL4] = NULL,
+        [GPLL4_VOTE] = NULL,
+        [GCC_SDCC1_CDCCAL_SLEEP_CLK] = NULL,
+        [GCC_SDCC1_CDCCAL_FF_CLK] = NULL,
 };
 
 static const struct qcom_reset_map gcc_msm8974_resets[] = {
@@ -2585,14 +2676,41 @@ static const struct qcom_cc_desc gcc_msm8974_desc = {
 
 static const struct of_device_id gcc_msm8974_match_table[] = {
         { .compatible = "qcom,gcc-msm8974" },
+        { .compatible = "qcom,gcc-msm8974pro" , .data = (void *)1UL },
+        { .compatible = "qcom,gcc-msm8974pro-ac", .data = (void *)1UL },
         { }
 };
 MODULE_DEVICE_TABLE(of, gcc_msm8974_match_table);
 
+static void msm8974_pro_clock_override(void)
+{
+        sdcc1_apps_clk_src_init.parent_names = gcc_xo_gpll0_gpll4;
+        sdcc1_apps_clk_src_init.num_parents = 3;
+        sdcc1_apps_clk_src.freq_tbl = ftbl_gcc_sdcc1_apps_clk_pro;
+        sdcc1_apps_clk_src.parent_map = gcc_xo_gpll0_gpll4_map;
+
+        gcc_msm8974_clocks[GPLL4] = &gpll4.clkr;
+        gcc_msm8974_clocks[GPLL4_VOTE] = &gpll4_vote;
+        gcc_msm8974_clocks[GCC_SDCC1_CDCCAL_SLEEP_CLK] =
+                &gcc_sdcc1_cdccal_sleep_clk.clkr;
+        gcc_msm8974_clocks[GCC_SDCC1_CDCCAL_FF_CLK] =
+                &gcc_sdcc1_cdccal_ff_clk.clkr;
+}
+
 static int gcc_msm8974_probe(struct platform_device *pdev)
 {
         struct clk *clk;
         struct device *dev = &pdev->dev;
+        bool pro;
+        const struct of_device_id *id;
+
+        id = of_match_device(gcc_msm8974_match_table, dev);
+        if (!id)
+                return -ENODEV;
+        pro = !!(id->data);
+
+        if (pro)
+                msm8974_pro_clock_override();
 
         /* Temporary until RPM clocks supported */
         clk = clk_register_fixed_rate(dev, "xo", NULL, CLK_IS_ROOT, 19200000);
diff --git a/include/dt-bindings/clock/qcom,gcc-msm8974.h b/include/dt-bindings/clock/qcom,gcc-msm8974.h
index 223ca174d9d3..51e51c860fe6 100644
--- a/include/dt-bindings/clock/qcom,gcc-msm8974.h
+++ b/include/dt-bindings/clock/qcom,gcc-msm8974.h
@@ -316,5 +316,9 @@
 #define GCC_CE2_CLK_SLEEP_ENA                                   299
 #define GCC_CE2_AXI_CLK_SLEEP_ENA                               300
 #define GCC_CE2_AHB_CLK_SLEEP_ENA                               301
+#define GPLL4                                                   302
+#define GPLL4_VOTE                                              303
+#define GCC_SDCC1_CDCCAL_SLEEP_CLK                              304
+#define GCC_SDCC1_CDCCAL_FF_CLK                                 305
 
 #endif