From 776d7f1694a7d678291354a05f0243965708306a Mon Sep 17 00:00:00 2001
From: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Date: Mon, 16 May 2016 12:57:43 +0300
Subject: [PATCH] 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>
---
arch/arc/boot/dts/axc003_idu.dtsi | 2 +-
arch/arc/plat-axs10x/axs10x.c | 2 --
2 files changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/arc/boot/dts/axc003_idu.dtsi b/arch/arc/boot/dts/axc003_idu.dtsi
index 8955881db794e..ed1674b16e827 100644
--- a/arch/arc/boot/dts/axc003_idu.dtsi
+++ b/arch/arc/boot/dts/axc003_idu.dtsi
@@ -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 {
diff --git a/arch/arc/plat-axs10x/axs10x.c b/arch/arc/plat-axs10x/axs10x.c
index 9701c93f315d5..86548701023c2 100644
--- a/arch/arc/plat-axs10x/axs10x.c
+++ b/arch/arc/plat-axs10x/axs10x.c
@@ -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) {