clk: keystone: syscon-clk: Add support for AM64 specific epwm-tbclk

AM64 has 9 instances of EPWM modules. And each instance has a clk to
Timer-Base sub-module that can be controlled by Control module. Update
the driver with all the 9 instance of clocks associated to
ti,am64-epwm-tbclk.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210528045743.16537-3-lokeshvutla@ti.com
Reviewed-by: Tero Kristo <kristo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: lokeshvutla

drivers/clk/keystone/syscon-clk.c

@@ -149,11 +149,28 @@ static const struct ti_syscon_gate_clk_data am654_clk_data[] = {
 	{ /* Sentinel */ },
 };
 
+static const struct ti_syscon_gate_clk_data am64_clk_data[] = {
+	TI_SYSCON_CLK_GATE("epwm_tbclk0", 0x0, 0),
+	TI_SYSCON_CLK_GATE("epwm_tbclk1", 0x0, 1),
+	TI_SYSCON_CLK_GATE("epwm_tbclk2", 0x0, 2),
+	TI_SYSCON_CLK_GATE("epwm_tbclk3", 0x0, 3),
+	TI_SYSCON_CLK_GATE("epwm_tbclk4", 0x0, 4),
+	TI_SYSCON_CLK_GATE("epwm_tbclk5", 0x0, 5),
+	TI_SYSCON_CLK_GATE("epwm_tbclk6", 0x0, 6),
+	TI_SYSCON_CLK_GATE("epwm_tbclk7", 0x0, 7),
+	TI_SYSCON_CLK_GATE("epwm_tbclk8", 0x0, 8),
+	{ /* Sentinel */ },
+};
+
 static const struct of_device_id ti_syscon_gate_clk_ids[] = {
 	{
 		.compatible = "ti,am654-ehrpwm-tbclk",
 		.data = &am654_clk_data,
 	},
+	{
+		.compatible = "ti,am64-epwm-tbclk",
+		.data = &am64_clk_data,
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ti_syscon_gate_clk_ids);