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arc: axs103_smp: Fix CPU frequency to 100MHz for dual-core 

The most recent release of AXS103 [v1.1] is proven to work
at 100 MHz in dual-core mode so this change uses mentioned feature.
For that we:
 * Update axc003_idu.dtsi with mention of really-used CPU clock freq
 * Remove clock override in AXS platform code for dual-core HW

Note we're still leaving a hack for clock "downgrade" on early boot
for quad-core hardware.

Also note this change will break functionality of AXS103 v1.0 hardware.
That means all users of AXS103 __must__ upgrade their boards with the
most recent firmware.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
hifive-unleashed-5.1
Alexey Brodkin 2016-05-16 12:57:43 +03:00 committed by Vineet Gupta
parent 445a642142
commit 776d7f1694
2 changed files with 1 additions and 3 deletions
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2
arch/arc/boot/dts/axc003_idu.dtsi
View File

@ -28,7 +28,7 @@
core_clk: core_clk {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <90000000>;
clock-frequency = <100000000>;
};
core_intc: archs-intc@cpu {

2
arch/arc/plat-axs10x/axs10x.c
View File

@ -410,8 +410,6 @@ static void __init axs103_early_init(void)
unsigned int num_cores = (read_aux_reg(ARC_REG_MCIP_BCR) >> 16) & 0x3F;
if (num_cores > 2)
freq = 50;
else if (num_cores == 2)
freq = 75;
#endif
switch (freq) {