board: ti: am335x: Fix scale_vcore for beaglebones

commit 06507988 ("board: am335x: Introduce scale_vcores")
updated voltages of each board based on efuse. It updated
beagle bone specific voltages under the condition board_is_bone().
But this is true only for BeagleBoneWhite. Due to which voltages
are not configured for BBB, BBW as wrong device is being probed.

So create a common function board_is_beaglebonex() which includes
am335x based beagle family. Use this for updating voltages.

Also remove extra if condition for selecting voltages which is
done later using a switch case and match usb current limit as
before the commit 06507988.

Fixes: 06507988 ("board: am335x: Introduce scale_vcores")
Reported-by: Emmanuel Vadot <manu@bidouilliste.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

board/ti/am335x/board.c

@@ -344,14 +344,6 @@ static void scale_vcores_bone(int freq)
 	if (board_is_bone_lt())
 		freq = MPUPLL_M_1000;
 
-	if (freq == MPUPLL_M_1000) {
-		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
-		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
-	} else {
-		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
-		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
-	}
-
 	switch (freq) {
 	case MPUPLL_M_1000:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
@@ -359,15 +351,16 @@ static void scale_vcores_bone(int freq)
 		break;
 	case MPUPLL_M_800:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
-		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
+		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
 		break;
 	case MPUPLL_M_720:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1200MV;
-		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
+		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
 		break;
 	case MPUPLL_M_600:
 	case MPUPLL_M_500:
 	case MPUPLL_M_300:
+	default:
 		mpu_vdd = TPS65217_DCDC_VOLT_SEL_1100MV;
 		usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
 		break;
@@ -470,7 +463,7 @@ void scale_vcores(void)
 	gpi2c_init();
 	freq = am335x_get_efuse_mpu_max_freq(cdev);
 
-	if (board_is_bone())
+	if (board_is_beaglebonex())
 		scale_vcores_bone(freq);
 	else
 		scale_vcores_generic(freq);

board/ti/am335x/board.h

@@ -39,6 +39,11 @@ static inline int board_is_bbg1(void)
 	return board_is_bone_lt() && !strncmp(board_ti_get_rev(), "BBG1", 4);
 }
 
+static inline int board_is_beaglebonex(void)
+{
+	return board_is_bone() || board_is_bone_lt() || board_is_bbg1();
+}
+
 static inline int board_is_evm_sk(void)
 {
 	return board_ti_is("A335X_SK");