ARM: dts: Add missing omap4 secure clocks

The secure clocks on omap4 are similar to what we already have for dra7
in dra7_l4sec_clkctrl_regs and documented in the omap4460 TRM "Table
3-1346 L4PER_CM2 Registers Mapping Summary".

The secure clocks are part of the l4_per clock manager. As the l4_per
clock manager has now two clock domains as children, let's also update
the l4_per clockdomain node name to follow the "clock" node naming with
a domain specific compatible property.

Cc: [e-mail]
Cc: Rob Herring <[e-mail]>
Acked-by: Stephen Boyd <[e-mail]>
Signed-off-by: Tony Lindgren <[e-mail]>

arch/arm/boot/dts/omap44xx-clocks.dtsi

···
 		#size-cells = <1>;
 		ranges = <0 0x1400 0x200>;
 
-		l4_per_clkctrl: clk@20 {
-			compatible = "ti,clkctrl";
+		l4_per_clkctrl: clock@20 {
+			compatible = "ti,clkctrl-l4-per", "ti,clkctrl";
 			reg = <0x20 0x144>;
 			#clock-cells = <2>;
 		};
-	};
 
+		l4_secure_clkctrl: clock@1a0 {
+			compatible = "ti,clkctrl-l4-secure", "ti,clkctrl";
+			reg = <0x1a0 0x3c>;
+			#clock-cells = <2>;
+		};
+	};
 };
 
 &prm {

drivers/clk/ti/clk-44xx.c

···
 	{ 0 },
 };
 
+static const struct
+omap_clkctrl_reg_data omap4_l4_secure_clkctrl_regs[] __initconst = {
+	{ OMAP4_AES1_CLKCTRL, NULL, CLKF_SW_SUP, "" },
+	{ OMAP4_AES2_CLKCTRL, NULL, CLKF_SW_SUP, "" },
+	{ OMAP4_DES3DES_CLKCTRL, NULL, CLKF_SW_SUP, "" },
+	{ OMAP4_PKA_CLKCTRL, NULL, CLKF_SW_SUP, "" },
+	{ OMAP4_RNG_CLKCTRL, NULL, CLKF_HW_SUP | CLKF_SOC_NONSEC, "" },
+	{ OMAP4_SHA2MD5_CLKCTRL, NULL, CLKF_SW_SUP, "" },
+	{ OMAP4_CRYPTODMA_CLKCTRL, NULL, CLKF_HW_SUP | CLKF_SOC_NONSEC, "" },
+	{ 0 },
+};
+
 static const struct omap_clkctrl_bit_data omap4_gpio1_bit_data[] __initconst = {
 	{ 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL },
 	{ 0 },
···
 	{ 0x4a009220, omap4_l3_gfx_clkctrl_regs },
 	{ 0x4a009320, omap4_l3_init_clkctrl_regs },
 	{ 0x4a009420, omap4_l4_per_clkctrl_regs },
+	{ 0x4a0095a0, omap4_l4_secure_clkctrl_regs },
 	{ 0x4a307820, omap4_l4_wkup_clkctrl_regs },
 	{ 0x4a307a20, omap4_emu_sys_clkctrl_regs },
 	{ 0 },

include/dt-bindings/clock/omap4.h

···
 #define OMAP4_UART4_CLKCTRL	OMAP4_CLKCTRL_INDEX(0x158)
 #define OMAP4_MMC5_CLKCTRL	OMAP4_CLKCTRL_INDEX(0x160)
 
+/* l4_secure clocks */
+#define OMAP4_L4_SECURE_CLKCTRL_OFFSET	0x1a0
+#define OMAP4_L4_SECURE_CLKCTRL_INDEX(offset)	((offset) - OMAP4_L4_SECURE_CLKCTRL_OFFSET)
+#define OMAP4_AES1_CLKCTRL	OMAP4_L4_SECURE_CLKCTRL_INDEX(0x1a0)
+#define OMAP4_AES2_CLKCTRL	OMAP4_L4_SECURE_CLKCTRL_INDEX(0x1a8)
+#define OMAP4_DES3DES_CLKCTRL	OMAP4_L4_SECURE_CLKCTRL_INDEX(0x1b0)
+#define OMAP4_PKA_CLKCTRL	OMAP4_L4_SECURE_CLKCTRL_INDEX(0x1b8)
+#define OMAP4_RNG_CLKCTRL	OMAP4_L4_SECURE_CLKCTRL_INDEX(0x1c0)
+#define OMAP4_SHA2MD5_CLKCTRL	OMAP4_L4_SECURE_CLKCTRL_INDEX(0x1c8)
+#define OMAP4_CRYPTODMA_CLKCTRL	OMAP4_L4_SECURE_CLKCTRL_INDEX(0x1d8)
+
 /* l4_wkup clocks */
 #define OMAP4_L4_WKUP_CLKCTRL	OMAP4_CLKCTRL_INDEX(0x20)
 #define OMAP4_WD_TIMER2_CLKCTRL	OMAP4_CLKCTRL_INDEX(0x30)