dm: cpu: bmips: add BCM6318 support

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

drivers/cpu/bmips_cpu.c

@@ -26,6 +26,10 @@ DECLARE_GLOBAL_DATA_PTR;
 #define REG_BCM6328_OTP			0x62c
 #define BCM6328_TP1_DISABLED		BIT(9)
 
+#define REG_BCM6318_STRAP_OVRDBUS	0x900
+#define OVRDBUS_6318_FREQ_SHIFT		23
+#define OVRDBUS_6318_FREQ_MASK		(0x3 << OVRDBUS_6318_FREQ_SHIFT)
+
 #define REG_BCM6328_MISC_STRAPBUS	0x1a40
 #define STRAPBUS_6328_FCVO_SHIFT	7
 #define STRAPBUS_6328_FCVO_MASK		(0x1f << STRAPBUS_6328_FCVO_SHIFT)
@@ -112,6 +116,28 @@ static ulong bcm3380_get_cpu_freq(struct bmips_cpu_priv *priv)
 	return 333000000;
 }
 
+static ulong bcm6318_get_cpu_freq(struct bmips_cpu_priv *priv)
+{
+	unsigned int mips_pll_fcvo;
+
+	mips_pll_fcvo = readl_be(priv->regs + REG_BCM6318_STRAP_OVRDBUS);
+	mips_pll_fcvo = (mips_pll_fcvo & OVRDBUS_6318_FREQ_MASK)
+			>> OVRDBUS_6318_FREQ_SHIFT;
+
+	switch (mips_pll_fcvo) {
+	case 0:
+		return 166000000;
+	case 1:
+		return 400000000;
+	case 2:
+		return 250000000;
+	case 3:
+		return 333000000;
+	default:
+		return 0;
+	}
+}
+
 static ulong bcm6328_get_cpu_freq(struct bmips_cpu_priv *priv)
 {
 	unsigned int mips_pll_fcvo;
@@ -233,6 +259,12 @@ static const struct bmips_cpu_hw bmips_cpu_bcm3380 = {
 	.get_cpu_count = bcm6358_get_cpu_count,
 };
 
+static const struct bmips_cpu_hw bmips_cpu_bcm6318 = {
+	.get_cpu_desc = bmips_short_cpu_desc,
+	.get_cpu_freq = bcm6318_get_cpu_freq,
+	.get_cpu_count = bcm6345_get_cpu_count,
+};
+
 static const struct bmips_cpu_hw bmips_cpu_bcm6328 = {
 	.get_cpu_desc = bmips_long_cpu_desc,
 	.get_cpu_freq = bcm6328_get_cpu_freq,
@@ -348,6 +380,9 @@ static const struct udevice_id bmips_cpu_ids[] = {
 		.compatible = "brcm,bcm3380-cpu",
 		.data = (ulong)&bmips_cpu_bcm3380,
 	}, {
+		.compatible = "brcm,bcm6318-cpu",
+		.data = (ulong)&bmips_cpu_bcm6318,
+	}, {
 		.compatible = "brcm,bcm6328-cpu",
 		.data = (ulong)&bmips_cpu_bcm6328,
 	}, {