clk: st: Support for A9 MUX clocks

The patch supports the A9-mux clocks used by ClockGenA9

A9-mux clock : Multiplexer inside ClockGenA9. A9 clock can be driven by
either PLL or External clock (with an optional divide-by-2). This is
implemented as 3-parent clock : PLL, Ext-clk OR Ext-clk/2
Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

drivers/clk/st/clkgen-mux.c

@@ -570,6 +570,17 @@ static struct clkgen_mux_data clkgen_mux_c_vcc_sd_416 = {
 	.lock = &clkgenf_lock,
 };
 
+static struct clkgen_mux_data stih415_a9_mux_data = {
+	.offset = 0,
+	.shift = 1,
+	.width = 2,
+};
+static struct clkgen_mux_data stih416_a9_mux_data = {
+	.offset = 0,
+	.shift = 0,
+	.width = 2,
+};
+
 static struct of_device_id mux_of_match[] = {
 	{
 		.compatible = "st,stih416-clkgenc-vcc-hd",
@@ -591,6 +602,14 @@ static struct of_device_id mux_of_match[] = {
 		.compatible = "st,stih416-clkgenf-vcc-sd",
 		.data = &clkgen_mux_c_vcc_sd_416,
 	},
+	{
+		.compatible = "st,stih415-clkgen-a9-mux",
+		.data = &stih415_a9_mux_data,
+	},
+	{
+		.compatible = "st,stih416-clkgen-a9-mux",
+		.data = &stih416_a9_mux_data,
+	},
 	{}
 };