dm: cpu: bmips: add BCM6348 support

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/cpu/bmips_cpu.c b/drivers/cpu/bmips_cpu.c
index 608716309209900cbe8f0c3df2e9b1d828ace1ef..23810817bfec64b94679675037284c0407c928b9 100644 (file)
--- 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,
@@ -261,6 +292,9 @@ 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,