clk: sunxi: rename compatible strings

During the introduction of the Allwinner SoC platforms, sunxi was
initially meant as a generic name for all the variants of the Allwinner
SoC.

It was ok at the time of the support of only the A10 and A13 that
look pretty much the same; but it's beginning to be troublesome with
the future addition of the Allwinner A31 (sun6i) that is quite
different, and would introduce some weird logic, where sunxi would
actually mean in some case sun4i and sun5i but without sun6i...

Moreover, it makes the compatible strings naming scheme not consistent
with other architectures, where usually for this kind of compability, we
just use the oldest SoC name that has this IP, so let's do just this.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

Documentation/devicetree/bindings/clock/sunxi.txt

@@ -6,14 +6,14 @@ This binding uses the common clock binding[1].
 
 Required properties:
 - compatible : shall be one of the following:
-	"allwinner,sunxi-osc-clk" - for a gatable oscillator
+	"allwinner,sun4i-osc-clk" - for a gatable oscillator
-	"allwinner,sunxi-pll1-clk" - for the main PLL clock
+	"allwinner,sun4i-pll1-clk" - for the main PLL clock
-	"allwinner,sunxi-cpu-clk" - for the CPU multiplexer clock
+	"allwinner,sun4i-cpu-clk" - for the CPU multiplexer clock
-	"allwinner,sunxi-axi-clk" - for the sunxi AXI clock
+	"allwinner,sun4i-axi-clk" - for the AXI clock
-	"allwinner,sunxi-ahb-clk" - for the sunxi AHB clock
+	"allwinner,sun4i-ahb-clk" - for the AHB clock
-	"allwinner,sunxi-apb0-clk" - for the sunxi APB0 clock
+	"allwinner,sun4i-apb0-clk" - for the APB0 clock
-	"allwinner,sunxi-apb1-clk" - for the sunxi APB1 clock
+	"allwinner,sun4i-apb1-clk" - for the APB1 clock
-	"allwinner,sunxi-apb1-mux-clk" - for the sunxi APB1 clock muxing
+	"allwinner,sun4i-apb1-mux-clk" - for the APB1 clock muxing
 
 Required properties for all clocks:
 - reg : shall be the control register address for the clock.
@@ -24,21 +24,21 @@ For example:
 
 osc24M: osc24M@01c20050 {
 	#clock-cells = <0>;
-	compatible = "allwinner,sunxi-osc-clk";
+	compatible = "allwinner,sun4i-osc-clk";
 	reg = <0x01c20050 0x4>;
 	clocks = <&osc24M_fixed>;
 };
 
 pll1: pll1@01c20000 {
 	#clock-cells = <0>;
-	compatible = "allwinner,sunxi-pll1-clk";
+	compatible = "allwinner,sun4i-pll1-clk";
 	reg = <0x01c20000 0x4>;
 	clocks = <&osc24M>;
 };
 
 cpu: cpu@01c20054 {
 	#clock-cells = <0>;
-	compatible = "allwinner,sunxi-cpu-clk";
+	compatible = "allwinner,sun4i-cpu-clk";
 	reg = <0x01c20054 0x4>;
 	clocks = <&osc32k>, <&osc24M>, <&pll1>;
 };

drivers/clk/sunxi/clk-sunxi.c

@@ -305,29 +305,29 @@ static void __init sunxi_divider_clk_setup(struct device_node *node,
 /* Matches for of_clk_init */
 static const __initconst struct of_device_id clk_match[] = {
 	{.compatible = "fixed-clock", .data = of_fixed_clk_setup,},
-	{.compatible = "allwinner,sunxi-osc-clk", .data = sunxi_osc_clk_setup,},
+	{.compatible = "allwinner,sun4i-osc-clk", .data = sunxi_osc_clk_setup,},
 	{}
 };
 
 /* Matches for factors clocks */
 static const __initconst struct of_device_id clk_factors_match[] = {
-	{.compatible = "allwinner,sunxi-pll1-clk", .data = &pll1_data,},
+	{.compatible = "allwinner,sun4i-pll1-clk", .data = &pll1_data,},
-	{.compatible = "allwinner,sunxi-apb1-clk", .data = &apb1_data,},
+	{.compatible = "allwinner,sun4i-apb1-clk", .data = &apb1_data,},
 	{}
 };
 
 /* Matches for divider clocks */
 static const __initconst struct of_device_id clk_div_match[] = {
-	{.compatible = "allwinner,sunxi-axi-clk", .data = &axi_data,},
+	{.compatible = "allwinner,sun4i-axi-clk", .data = &axi_data,},
-	{.compatible = "allwinner,sunxi-ahb-clk", .data = &ahb_data,},
+	{.compatible = "allwinner,sun4i-ahb-clk", .data = &ahb_data,},
-	{.compatible = "allwinner,sunxi-apb0-clk", .data = &apb0_data,},
+	{.compatible = "allwinner,sun4i-apb0-clk", .data = &apb0_data,},
 	{}
 };
 
 /* Matches for mux clocks */
 static const __initconst struct of_device_id clk_mux_match[] = {
-	{.compatible = "allwinner,sunxi-cpu-clk", .data = &cpu_data,},
+	{.compatible = "allwinner,sun4i-cpu-clk", .data = &cpu_data,},
-	{.compatible = "allwinner,sunxi-apb1-mux-clk", .data = &apb1_mux_data,},
+	{.compatible = "allwinner,sun4i-apb1-mux-clk", .data = &apb1_mux_data,},
 	{}
 };