ARM: AM43xx: clocks: Update DPLL details for EPOS EVM

Updating the Multiplier and Dividers values for all DPLLs for EPOS EVM.
Following are the DPLL locking frequencies at OPP NOM:
MPU locks at 600MHz
Core locks at 1000MHz
Per locks at 960MHz
DDR locks at 266MHz

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

arch/arm/cpu/armv7/am33xx/clock.c

@@ -101,9 +101,15 @@ void do_setup_dpll(const struct dpll_regs *dpll_regs,
 static void setup_dplls(void)
 {
 	const struct dpll_params *params;
-	do_setup_dpll(&dpll_core_regs, &dpll_core);
-	do_setup_dpll(&dpll_mpu_regs, &dpll_mpu);
-	do_setup_dpll(&dpll_per_regs, &dpll_per);
+
+	params = get_dpll_core_params();
+	do_setup_dpll(&dpll_core_regs, params);
+
+	params = get_dpll_mpu_params();
+	do_setup_dpll(&dpll_mpu_regs, params);
+
+	params = get_dpll_per_params();
+	do_setup_dpll(&dpll_per_regs, params);
 	writel(0x300, &cmwkup->clkdcoldodpllper);
 
 	params = get_dpll_ddr_params();

arch/arm/cpu/armv7/am33xx/clock_am33xx.c

@@ -62,6 +62,21 @@ const struct dpll_params dpll_core = {
 const struct dpll_params dpll_per = {
 		960, OSC-1, 5, -1, -1, -1, -1};
 
+const struct dpll_params *get_dpll_mpu_params(void)
+{
+	return &dpll_mpu;
+}
+
+const struct dpll_params *get_dpll_core_params(void)
+{
+	return &dpll_core;
+}
+
+const struct dpll_params *get_dpll_per_params(void)
+{
+	return &dpll_per;
+}
+
 void setup_clocks_for_console(void)
 {
 	clrsetbits_le32(&cmwkup->wkclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK,

arch/arm/cpu/armv7/am33xx/clock_am43xx.c

@@ -48,15 +48,9 @@ const struct dpll_regs dpll_ddr_regs = {
 	.cm_idlest_dpll		= CM_WKUP + 0x5A4,
 	.cm_clksel_dpll		= CM_WKUP + 0x5AC,
 	.cm_div_m2_dpll		= CM_WKUP + 0x5B0,
+	.cm_div_m4_dpll		= CM_WKUP + 0x5B8,
 };
 
-const struct dpll_params dpll_mpu = {
-		-1, -1, -1, -1, -1, -1, -1};
-const struct dpll_params dpll_core = {
-		-1, -1, -1, -1, -1, -1, -1};
-const struct dpll_params dpll_per = {
-		-1, -1, -1, -1, -1, -1, -1};
-
 void setup_clocks_for_console(void)
 {
 	/* Do not add any spl_debug prints in this function */

arch/arm/include/asm/arch-am33xx/clock.h

@@ -98,13 +98,12 @@ extern const struct dpll_regs dpll_mpu_regs;
 extern const struct dpll_regs dpll_core_regs;
 extern const struct dpll_regs dpll_per_regs;
 extern const struct dpll_regs dpll_ddr_regs;
-extern const struct dpll_params dpll_mpu;
-extern const struct dpll_params dpll_core;
-extern const struct dpll_params dpll_per;
-extern const struct dpll_params dpll_ddr;
 
 extern struct cm_wkuppll *const cmwkup;
 
+const struct dpll_params *get_dpll_mpu_params(void);
+const struct dpll_params *get_dpll_core_params(void);
+const struct dpll_params *get_dpll_per_params(void);
 const struct dpll_params *get_dpll_ddr_params(void);
 void do_setup_dpll(const struct dpll_regs *, const struct dpll_params *);
 void prcm_init(void);

board/ti/am43xx/board.c

@@ -65,12 +65,44 @@ static int read_eeprom(struct am43xx_board_id *header)
 
 #ifdef CONFIG_SPL_BUILD
 
-const struct dpll_params dpll_ddr = {
-		-1, -1, -1, -1, -1, -1, -1};
+const struct dpll_params epos_evm_dpll_ddr = {
+		266, 24, 1, -1, 1, -1, -1};
+const struct dpll_params epos_evm_dpll_mpu = {
+		600, 24, 1, -1, -1, -1, -1};
+const struct dpll_params epos_evm_dpll_core = {
+		1000, 24, -1, -1, 10, 8, 4};
+const struct dpll_params epos_evm_dpll_per = {
+		960, 24, 5, -1, -1, -1, -1};
 
 const struct dpll_params *get_dpll_ddr_params(void)
 {
-	return &dpll_ddr;
+	if (board_is_eposevm())
+		return &epos_evm_dpll_ddr;
+}
+
+const struct dpll_params *get_dpll_mpu_params(void)
+{
+	if (board_is_eposevm())
+		return &epos_evm_dpll_mpu;
+}
+
+const struct dpll_params *get_dpll_core_params(void)
+{
+	struct am43xx_board_id header;
+
+	enable_i2c0_pin_mux();
+	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+	if (read_eeprom(&header) < 0)
+		puts("Could not get board ID.\n");
+
+	if (board_is_eposevm())
+		return &epos_evm_dpll_core;
+}
+
+const struct dpll_params *get_dpll_per_params(void)
+{
+	if (board_is_eposevm())
+		return &epos_evm_dpll_per;
 }
 
 void set_uart_mux_conf(void)

board/ti/am43xx/board.h

@@ -46,4 +46,5 @@ static inline int board_is_gpevm(void)
 
 void enable_uart0_pin_mux(void);
 void enable_board_pin_mux(void);
+void enable_i2c0_pin_mux(void);
 #endif

board/ti/am43xx/mux.c

@@ -45,3 +45,8 @@ void enable_board_pin_mux(void)
 	configure_module_pin_mux(mmc0_pin_mux);
 	configure_module_pin_mux(i2c0_pin_mux);
 }
+
+void enable_i2c0_pin_mux(void)
+{
+	configure_module_pin_mux(i2c0_pin_mux);
+}