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| author | Philippe Reynes <philippe.reynes@softathome.com> | 2018-07-16 19:06:14 +0200 |
|---|---|---|
| committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2018-08-08 13:38:17 +0200 |
| commit | 341032d3f156858124de5abec6ec174a2cce1bf3 (patch) | |
| tree | b0094ca4bfeee1743e92333dde88bee7c64fe3a8 /drivers/cpu | |
| parent | 3e4a68d32bd54e53758f6825a9752eb1a7099e66 (diff) | |
bcm6838: add initial support
This adds the initial support of the Broadcom BCM6838 SoC familly,
only cpu, dram, uart and leds are supported.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Diffstat (limited to 'drivers/cpu')
| -rw-r--r-- | drivers/cpu/bmips_cpu.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/cpu/bmips_cpu.c b/drivers/cpu/bmips_cpu.c index 78560b0fb4..fc047473f5 100644 --- a/drivers/cpu/bmips_cpu.c +++ b/drivers/cpu/bmips_cpu.c @@ -66,6 +66,10 @@ #define STRAPBUS_63268_FCVO_SHIFT 21 #define STRAPBUS_63268_FCVO_MASK (0xf << STRAPBUS_63268_FCVO_SHIFT) +#define REG_BCM6838_OTP_BRCMBITS0 0x440 +#define VIPER_6838_FREQ_SHIFT 18 +#define VIPER_6838_FREQ_MASK (0x7 << VIPER_6838_FREQ_SHIFT) + struct bmips_cpu_priv; struct bmips_cpu_hw { @@ -272,6 +276,26 @@ static ulong bcm63268_get_cpu_freq(struct bmips_cpu_priv *priv) } } +static ulong bcm6838_get_cpu_freq(struct bmips_cpu_priv *priv) +{ + unsigned int mips_viper_freq; + + mips_viper_freq = readl_be(priv->regs + REG_BCM6838_OTP_BRCMBITS0); + mips_viper_freq = (mips_viper_freq & VIPER_6838_FREQ_MASK) + >> VIPER_6838_FREQ_SHIFT; + + switch (mips_viper_freq) { + case 0x0: + return 600000000; + case 0x1: + return 400000000; + case 0x2: + return 240000000; + default: + return 0; + } +} + static int bcm6328_get_cpu_count(struct bmips_cpu_priv *priv) { u32 val = readl_be(priv->regs + REG_BCM6328_OTP); @@ -346,6 +370,12 @@ static const struct bmips_cpu_hw bmips_cpu_bcm63268 = { .get_cpu_count = bcm6358_get_cpu_count, }; +static const struct bmips_cpu_hw bmips_cpu_bcm6838 = { + .get_cpu_desc = bmips_short_cpu_desc, + .get_cpu_freq = bcm6838_get_cpu_freq, + .get_cpu_count = bcm6358_get_cpu_count, +}; + /* Generic CPU Ops */ static int bmips_cpu_get_desc(struct udevice *dev, char *buf, int size) { @@ -444,6 +474,9 @@ static const struct udevice_id bmips_cpu_ids[] = { }, { .compatible = "brcm,bcm63268-cpu", .data = (ulong)&bmips_cpu_bcm63268, + }, { + .compatible = "brcm,bcm6838-cpu", + .data = (ulong)&bmips_cpu_bcm6838, }, { /* sentinel */ } }; |