[PATCH v4 8/8] ARM: dts: mt6580: enable basic SMP bringup for MT6580

Scott Shu scott.shu at mediatek.com
Sun Aug 23 02:01:07 PDT 2015


Add arch timer node to enable arch-timer support. MT6580 firmware
doesn't correctly setup arch-timer frequency and CNTVOFF, add
properties to workaround this.

This set cpu enable-method to enable SMP.

Signed-off-by: Scott Shu <scott.shu at mediatek.com>
---
 arch/arm/boot/dts/mt6580.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/mt6580.dtsi b/arch/arm/boot/dts/mt6580.dtsi
index 40957d3..70531b2 100644
--- a/arch/arm/boot/dts/mt6580.dtsi
+++ b/arch/arm/boot/dts/mt6580.dtsi
@@ -25,26 +25,31 @@
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
+		enable-method = "mediatek,mt6580-smp";
 
 		cpu at 0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x0>;
+			clock-frequency = <1700000000>;
 		};
 		cpu at 1 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x1>;
+			clock-frequency = <1700000000>;
 		};
 		cpu at 2 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x2>;
+			clock-frequency = <1700000000>;
 		};
 		cpu at 3 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x3>;
+			clock-frequency = <1700000000>;
 		};
 
 	};
@@ -67,6 +72,21 @@
 		#clock-cells = <0>;
 	};
 
+	timer {
+		compatible = "arm,armv7-timer";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) |
+					  IRQ_TYPE_LEVEL_LOW)>,
+				<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) |
+					  IRQ_TYPE_LEVEL_LOW)>,
+				<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) |
+					  IRQ_TYPE_LEVEL_LOW)>,
+				<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) |
+					  IRQ_TYPE_LEVEL_LOW)>;
+		clock-frequency = <13000000>;
+		arm,cpu-registers-not-fw-configured;
+	};
+
 	scpsys: scpsys at 10006000 {
 		#power-domain-cells = <1>;
 		compatible = "mediatek,mt6580-scpsys";
-- 
1.9.1

************* Email Confidentiality Notice ********************
The information contained in this e-mail message (including any 
attachments) may be confidential, proprietary, privileged, or otherwise
exempt from disclosure under applicable laws. It is intended to be 
conveyed only to the designated recipient(s). Any use, dissemination, 
distribution, printing, retaining or copying of this e-mail (including its 
attachments) by unintended recipient(s) is strictly prohibited and may 
be unlawful. If you are not an intended recipient of this e-mail, or believe 
that you have received this e-mail in error, please notify the sender 
immediately (by replying to this e-mail), delete any and all copies of 
this e-mail (including any attachments) from your system, and do not
disclose the content of this e-mail to any other person. Thank you!



More information about the Linux-mediatek mailing list