clk: samsung: exynos5420: Add clocks for CMU_CDREX domain

This patch adds the mux/divider clocks for CMU_CDREX (DRAM Express
Controller) which generates the clocks for DRAM and NoC (Network on Chip)
bus.  There is differnet source of MUX_MX_MSPLL_CCORE between exynos5420
and exynos5422, so each MUX_MX_MSPLL_CCORE uses the different parent source
group.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>

drivers/clk/samsung/clk-exynos5420.c

@@ -131,6 +131,9 @@
 #define TOP_SPARE2		0x10b08
 #define BPLL_LOCK		0x20010
 #define BPLL_CON0		0x20110
+#define SRC_CDREX		0x20200
+#define DIV_CDREX0		0x20500
+#define DIV_CDREX1		0x20504
 #define KPLL_LOCK		0x28000
 #define KPLL_CON0		0x28100
 #define SRC_KFC			0x28200
@@ -244,6 +247,9 @@ static const unsigned long exynos5x_clk_regs[] __initconst = {
 	GATE_TOP_SCLK_FSYS,
 	GATE_TOP_SCLK_PERIC,
 	TOP_SPARE2,
+	SRC_CDREX,
+	DIV_CDREX0,
+	DIV_CDREX1,
 	SRC_KFC,
 	DIV_KFC0,
 };
@@ -448,6 +454,8 @@ PNAME(mout_maudio0_p) = {"fin_pll", "maudio_clk", "mout_sclk_dpll",
 			 "mout_sclk_epll", "mout_sclk_rpll"};
 PNAME(mout_mau_epll_clk_p) = {"mout_sclk_epll", "mout_sclk_dpll",
 				"mout_sclk_mpll", "mout_sclk_spll"};
+PNAME(mout_mclk_cdrex_p) = {"mout_bpll", "mout_mx_mspll_ccore"};
+
 /* List of parents specific to exynos5800 */
 PNAME(mout_epll2_5800_p)	= { "mout_sclk_epll", "ff_dout_epll2" };
 PNAME(mout_group1_5800_p)	= { "mout_sclk_cpll", "mout_sclk_dpll",
@@ -465,6 +473,9 @@ PNAME(mout_group6_5800_p)	= { "mout_sclk_ipll", "mout_sclk_dpll",
 PNAME(mout_group7_5800_p)	= { "mout_sclk_cpll", "mout_sclk_dpll",
 					"mout_sclk_mpll", "mout_sclk_spll",
 					"mout_epll2", "mout_sclk_ipll" };
+PNAME(mout_mx_mspll_ccore_p)	= {"sclk_bpll", "mout_sclk_dpll",
+					"mout_sclk_mpll", "ff_dout_spll2",
+					"mout_sclk_spll", "mout_sclk_epll"};
 PNAME(mout_mau_epll_clk_5800_p)	= { "mout_sclk_epll", "mout_sclk_dpll",
 					"mout_sclk_mpll",
 					"ff_dout_spll2" };
@@ -523,6 +534,8 @@ static const struct samsung_mux_clock exynos5800_mux_clks[] __initconst = {
 	MUX(0, "mout_aclk300_disp1", mout_group5_5800_p, SRC_TOP2, 24, 2),
 	MUX(0, "mout_aclk300_gscl", mout_group5_5800_p, SRC_TOP2, 28, 2),
 
+	MUX(CLK_MOUT_MX_MSPLL_CCORE, "mout_mx_mspll_ccore",
+			mout_mx_mspll_ccore_p, SRC_TOP7, 16, 2),
 	MUX(0, "mout_mau_epll_clk", mout_mau_epll_clk_5800_p, SRC_TOP7,
 			20, 2),
 	MUX(0, "sclk_bpll", mout_bpll_p, SRC_TOP7, 24, 1),
@@ -601,6 +614,8 @@ static const struct samsung_mux_clock exynos5420_mux_clks[] __initconst = {
 	MUX(0, "mout_aclk300_disp1", mout_group1_p, SRC_TOP2, 24, 2),
 	MUX(0, "mout_aclk300_gscl", mout_group1_p, SRC_TOP2, 28, 2),
 
+	MUX(CLK_MOUT_MX_MSPLL_CCORE, "mout_mx_mspll_ccore",
+			mout_group5_5800_p, SRC_TOP7, 16, 2),
 	MUX(0, "mout_mau_epll_clk", mout_mau_epll_clk_p, SRC_TOP7, 20, 2),
 
 	MUX(0, "mout_fimd1", mout_group3_p, SRC_DISP10, 4, 1),
@@ -744,6 +759,12 @@ static const struct samsung_mux_clock exynos5x_mux_clks[] __initconst = {
 
 	MUX(0, "mout_fimd1_final", mout_fimd1_final_p, TOP_SPARE2, 8, 1),
 
+	/* CDREX block */
+	MUX_F(CLK_MOUT_MCLK_CDREX, "mout_mclk_cdrex", mout_mclk_cdrex_p,
+			SRC_CDREX, 4, 1, CLK_SET_RATE_PARENT, 0),
+	MUX_F(CLK_MOUT_BPLL, "mout_bpll", mout_bpll_p, SRC_CDREX, 0, 1,
+			CLK_SET_RATE_PARENT, 0),
+
 	/* MAU Block */
 	MUX(CLK_MOUT_MAUDIO0, "mout_maudio0", mout_maudio0_p, SRC_MAU, 28, 3),
 
@@ -836,6 +857,21 @@ static const struct samsung_div_clock exynos5x_div_clks[] __initconst = {
 	DIV(CLK_DOUT_ACLK400_DISP1, "dout_aclk400_disp1",
 			"mout_aclk400_disp1", DIV_TOP2, 4, 3),
 
+	/* CDREX Block */
+	DIV(CLK_DOUT_PCLK_CDREX, "dout_pclk_cdrex", "dout_aclk_cdrex1",
+			DIV_CDREX0, 28, 3),
+	DIV_F(CLK_DOUT_SCLK_CDREX, "dout_sclk_cdrex", "mout_mclk_cdrex",
+			DIV_CDREX0, 24, 3, CLK_SET_RATE_PARENT, 0),
+	DIV(CLK_DOUT_ACLK_CDREX1, "dout_aclk_cdrex1", "dout_clk2x_phy0",
+			DIV_CDREX0, 16, 3),
+	DIV(CLK_DOUT_CCLK_DREX0, "dout_cclk_drex0", "dout_clk2x_phy0",
+			DIV_CDREX0, 8, 3),
+	DIV(CLK_DOUT_CLK2X_PHY0, "dout_clk2x_phy0", "dout_sclk_cdrex",
+			DIV_CDREX0, 3, 5),
+
+	DIV(CLK_DOUT_PCLK_CORE_MEM, "dout_pclk_core_mem", "mout_mclk_cdrex",
+			DIV_CDREX1, 8, 3),
+
 	/* Audio Block */
 	DIV(0, "dout_maudio0", "mout_maudio0", DIV_MAU, 20, 4),
 	DIV(0, "dout_maupcm0", "dout_maudio0", DIV_MAU, 24, 8),
@@ -1364,6 +1400,7 @@ static void __init exynos5x_clk_init(struct device_node *np,
 	if (_get_rate("fin_pll") == 24 * MHZ) {
 		exynos5x_plls[apll].rate_table = exynos5420_pll2550x_24mhz_tbl;
 		exynos5x_plls[kpll].rate_table = exynos5420_pll2550x_24mhz_tbl;
+		exynos5x_plls[bpll].rate_table = exynos5420_pll2550x_24mhz_tbl;
 	}
 
 	samsung_clk_register_pll(ctx, exynos5x_plls, ARRAY_SIZE(exynos5x_plls),