clk: uniphier: Add SoC-glue clock source selector support for Pro4

Add SoC-glue clock source selector for ahci controller on UniPhier SoCs.
Currently this supports Pro4 only.

Signed-off-by: Kunihiko Hayashi <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/uniphier/clk-uniphier-core.c

···
 		.compatible = "socionext,uniphier-nx1-peri-clock",
 		.data = uniphier_pro4_peri_clk_data,
 	},
+	/* SoC-glue clock */
+	{
+		.compatible = "socionext,uniphier-pro4-sg-clock",
+		.data = uniphier_pro4_sg_clk_data,
+	},
 	{ /* sentinel */ }
 };
 

drivers/clk/uniphier/clk-uniphier-sys.c

···
 			     "cpll/32"),
 	{ /* sentinel */ }
 };
+
+const struct uniphier_clk_data uniphier_pro4_sg_clk_data[] = {
+	UNIPHIER_CLK_DIV("gpll", 4),
+	{
+		.name = "sata-ref",
+		.type = UNIPHIER_CLK_TYPE_MUX,
+		.idx = 0,
+		.data.mux = {
+			.parent_names = { "gpll/4", "ref", },
+			.num_parents = 2,
+			.reg = 0x1a28,
+			.masks = { 0x1, 0x1, },
+			.vals  = { 0x0, 0x1, },
+		},
+	},
+	{ /* sentinel */ }
+};

drivers/clk/uniphier/clk-uniphier.h

···
 extern const struct uniphier_clk_data uniphier_pro5_sd_clk_data[];
 extern const struct uniphier_clk_data uniphier_ld4_peri_clk_data[];
 extern const struct uniphier_clk_data uniphier_pro4_peri_clk_data[];
+extern const struct uniphier_clk_data uniphier_pro4_sg_clk_data[];
 
 #endif /* __CLK_UNIPHIER_H__ */