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clk: mvebu: Add clk support for the orion5x SoC mv88f5181 

Referring to the u-boot sources for the Netgear WNR854T, add support
for the mv88f5181.

[gregory.clement@free-electrons.com: fix commit title]
Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
steinar/wifi_calib_4_9_kernel
Jamie Lentin 2016-05-19 22:38:23 +01:00 committed by Gregory CLEMENT
parent 29b4817d40
commit 57d0ee077a
2 changed files with 71 additions and 0 deletions
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1
Documentation/devicetree/bindings/clock/mvebu-core-clock.txt
View File

@ -52,6 +52,7 @@ Required properties:
"marvell,dove-core-clock" - for Dove SoC core clocks
"marvell,kirkwood-core-clock" - for Kirkwood SoC (except mv88f6180)
"marvell,mv88f6180-core-clock" - for Kirkwood MV88f6180 SoC
"marvell,mv88f5181-core-clock" - for Orion MV88F5181 SoC
"marvell,mv88f5182-core-clock" - for Orion MV88F5182 SoC
"marvell,mv88f5281-core-clock" - for Orion MV88F5281 SoC
"marvell,mv88f6183-core-clock" - for Orion MV88F6183 SoC

70
drivers/clk/mvebu/orion.c
View File

@ -20,6 +20,76 @@ static const struct coreclk_ratio orion_coreclk_ratios[] __initconst = {
{ .id = 0, .name = "ddrclk", }
};
/*
* Orion 5181
*/
#define SAR_MV88F5181_TCLK_FREQ 8
#define SAR_MV88F5181_TCLK_FREQ_MASK 0x3
static u32 __init mv88f5181_get_tclk_freq(void __iomem *sar)
{
u32 opt = (readl(sar) >> SAR_MV88F5181_TCLK_FREQ) &
SAR_MV88F5181_TCLK_FREQ_MASK;
if (opt == 0)
return 133333333;
else if (opt == 1)
return 150000000;
else if (opt == 2)
return 166666667;
else
return 0;
}
#define SAR_MV88F5181_CPU_FREQ 4
#define SAR_MV88F5181_CPU_FREQ_MASK 0xf
static u32 __init mv88f5181_get_cpu_freq(void __iomem *sar)
{
u32 opt = (readl(sar) >> SAR_MV88F5181_CPU_FREQ) &
SAR_MV88F5181_CPU_FREQ_MASK;
if (opt == 0)
return 333333333;
else if (opt == 1 || opt == 2)
return 400000000;
else if (opt == 3)
return 500000000;
else
return 0;
}
static void __init mv88f5181_get_clk_ratio(void __iomem *sar, int id,
int *mult, int *div)
{
u32 opt = (readl(sar) >> SAR_MV88F5181_CPU_FREQ) &
SAR_MV88F5181_CPU_FREQ_MASK;
if (opt == 0 || opt == 1) {
*mult = 1;
*div = 2;
} else if (opt == 2 || opt == 3) {
*mult = 1;
*div = 3;
} else {
*mult = 0;
*div = 1;
}
}
static const struct coreclk_soc_desc mv88f5181_coreclks = {
.get_tclk_freq = mv88f5181_get_tclk_freq,
.get_cpu_freq = mv88f5181_get_cpu_freq,
.get_clk_ratio = mv88f5181_get_clk_ratio,
.ratios = orion_coreclk_ratios,
.num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
};
static void __init mv88f5181_clk_init(struct device_node *np)
{
return mvebu_coreclk_setup(np, &mv88f5181_coreclks);
}
CLK_OF_DECLARE(mv88f5181_clk, "marvell,mv88f5181-core-clock", mv88f5181_clk_init);
/*
* Orion 5182
*/