[PATCH v4 02/10] ARM: dts: list the CPU nodes for Exynos5250

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Instead of having to specify the number for CPUs in Exynos5250 in platsmp.c
file, let the number of CPUs be determined by having this information listed
in Exynos5250 device tree file.

Signed-off-by: Chander Kashyap <chander.kashyap@xxxxxxxxxx>
Reviewed-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
---
 arch/arm/boot/dts/exynos5250.dtsi |   16 ++++++++++++++++
 arch/arm/mach-exynos/platsmp.c    |   10 +++++++---
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
index 63ca03d..1aeef98 100644
--- a/arch/arm/boot/dts/exynos5250.dtsi
+++ b/arch/arm/boot/dts/exynos5250.dtsi
@@ -50,6 +50,22 @@
 		pinctrl3 = &pinctrl_3;
 	};
 
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a15";
+			reg = <0>;
+		};
+		cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a15";
+			reg = <1>;
+		};
+	};
+
 	pd_gsc: gsc-power-domain@0x10044000 {
 		compatible = "samsung,exynos4210-pd";
 		reg = <0x10044000 0x20>;
diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 1a4e4e5..85ea4ca 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -180,10 +180,14 @@ static void __init exynos_smp_init_cpus(void)
 	void __iomem *scu_base = scu_base_addr();
 	unsigned int i, ncores;
 
-	if (soc_is_exynos5250())
-		ncores = 2;
-	else
+	if (read_cpuid_part_number() == ARM_CPU_PART_CORTEX_A9)
 		ncores = scu_base ? scu_get_core_count(scu_base) : 1;
+	else
+		/*
+		 * CPU Nodes are passed thru DT and set_cpu_possible
+		 * is set by "arm_dt_init_cpu_maps".
+		 */
+		return;
 
 	/* sanity check */
 	if (ncores > nr_cpu_ids) {
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux SoC Development]     [Linux Rockchip Development]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Linux SCSI]     [Yosemite News]

  Powered by Linux