[U-Boot] [PATCH 2/6] dm: cpu: bmips: add BCM6348 support

Álvaro Fernández Rojas
2017-05-12T23:23:23Z

drivers/cpu/bmips_cpu.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)

diff --git a/drivers/cpu/bmips_cpu.c b/drivers/cpu/bmips_cpu.c
index 6087163..03b503a 100644
--- a/drivers/cpu/bmips_cpu.c
+++ b/drivers/cpu/bmips_cpu.c
@@ -30,6 +30,14 @@ DECLARE_GLOBAL_DATA_PTR;
#define STRAPBUS_6328_FCVO_SHIFT 7
#define STRAPBUS_6328_FCVO_MASK (0x1f << STRAPBUS_6328_FCVO_SHIFT)

+#define REG_BCM6348_PERF_MIPSPLLCFG 0x34
+#define MIPSPLLCFG_6348_M1CPU_SHIFT 6
+#define MIPSPLLCFG_6348_M1CPU_MASK (0x7 << MIPSPLLCFG_6348_M1CPU_SHIFT)
+#define MIPSPLLCFG_6348_N2_SHIFT 15
+#define MIPSPLLCFG_6348_N2_MASK (0x1F << MIPSPLLCFG_6348_N2_SHIFT)
+#define MIPSPLLCFG_6348_N1_SHIFT 20
+#define MIPSPLLCFG_6348_N1_MASK (0x7 << MIPSPLLCFG_6348_N1_SHIFT)
+
#define REG_BCM6358_DDR_DMIPSPLLCFG 0x12b8
#define DMIPSPLLCFG_6358_M1_SHIFT 0
#define DMIPSPLLCFG_6358_M1_MASK (0xff << DMIPSPLLCFG_6358_M1_SHIFT)
@@ -115,6 +123,18 @@ static ulong bcm6328_get_cpu_freq(struct bmips_cpu_priv *priv)
}
}

+static ulong bcm6348_get_cpu_freq(struct bmips_cpu_priv *priv)
+{
+ unsigned int tmp, n1, n2, m1;
+
+ tmp = readl_be(priv->regs + REG_BCM6348_PERF_MIPSPLLCFG);
+ n1 = (tmp & MIPSPLLCFG_6348_N1_MASK) >> MIPSPLLCFG_6348_N1_SHIFT;
+ n2 = (tmp & MIPSPLLCFG_6348_N2_MASK) >> MIPSPLLCFG_6348_N2_SHIFT;
+ m1 = (tmp & MIPSPLLCFG_6348_M1CPU_MASK) >> MIPSPLLCFG_6348_M1CPU_SHIFT;
+
+ return (16 * 1000000 * (n1 + 1) * (n2 + 2)) / (m1 + 1);
+}
+
static ulong bcm6358_get_cpu_freq(struct bmips_cpu_priv *priv)
{
unsigned int tmp, n1, n2, m1;
@@ -160,6 +180,11 @@ static int bcm6328_get_cpu_count(struct bmips_cpu_priv *priv)
return 2;
}

+static int bcm6345_get_cpu_count(struct bmips_cpu_priv *priv)
+{
+ return 1;
+}
+
static int bcm6358_get_cpu_count(struct bmips_cpu_priv *priv)
{
return 2;
@@ -171,6 +196,12 @@ static const struct bmips_cpu_hw bmips_cpu_bcm6328 = {
.get_cpu_count = bcm6328_get_cpu_count,
};

+static const struct bmips_cpu_hw bmips_cpu_bcm6348 = {
+ .get_cpu_desc = bmips_short_cpu_desc,
+ .get_cpu_freq = bcm6348_get_cpu_freq,
+ .get_cpu_count = bcm6345_get_cpu_count,
+};
+
static const struct bmips_cpu_hw bmips_cpu_bcm6358 = {
.get_cpu_desc = bmips_short_cpu_desc,
.get_cpu_freq = bcm6358_get_cpu_freq,
@@ -262,6 +293,9 @@ static const struct udevice_id bmips_cpu_ids[] = {
.compatible = "brcm,bcm6328-cpu",
.data = (ulong)&bmips_cpu_bcm6328,
}, {
+ .compatible = "brcm,bcm6348-cpu",
+ .data = (ulong)&bmips_cpu_bcm6348,
+ }, {
.compatible = "brcm,bcm6358-cpu",
.data = (ulong)&bmips_cpu_bcm6358,
}, {
--
2.1.4