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Date: Fri, 18 Jul 2014 17:18:03 +0100
From: Mark Rutland <mark.rutland@....com>
To: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc: "linux-samsung-soc@...r.kernel.org"
<linux-samsung-soc@...r.kernel.org>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
Tomasz Figa <t.figa@...sung.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Kukjin Kim <kgene.kim@...sung.com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH] ARM: dts: add CPU nodes for Exynos4 SoCs
On Fri, Jul 18, 2014 at 05:00:02PM +0100, Bartlomiej Zolnierkiewicz wrote:
> Recent patch by Tomasz Figa ("irqchip: gic: Fix core ID calculation
> when topology is read from DT") fixed GIC driver to filter cluster ID
> from values returned by cpu_logical_map() for SoCs having registers
> mapped without per-CPU banking making it is possible to add CPU nodes
> for Exynos4 SoCs. In case of Exynos SoCs these CPU nodes are also
> required by future changes adding initialization of cpuidle states in
> Exynos cpuidle driver through DT.
>
> Tested on Origen board (Exynos4210 SoC) and Trats2 (Exynos4412 SoC).
>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> ---
> Based on next-20140717 branch of linux-next tree +
> - [PATCH 2/6] ARM: EXYNOS: Fix core ID used by platsmp and hotplug code
> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg32811.html
> - [PATCH] irqchip: gic: Fix core ID calculation when topology is read from DT
> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg34277.html
>
> arch/arm/boot/dts/exynos4210.dtsi | 17 +++++++++++++++++
> arch/arm/boot/dts/exynos4212.dtsi | 17 +++++++++++++++++
> arch/arm/boot/dts/exynos4412.dtsi | 29 +++++++++++++++++++++++++++++
> 3 files changed, 63 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos4210.dtsi b/arch/arm/boot/dts/exynos4210.dtsi
> index ee3001f..b99fc83 100644
> --- a/arch/arm/boot/dts/exynos4210.dtsi
> +++ b/arch/arm/boot/dts/exynos4210.dtsi
> @@ -31,6 +31,23 @@
> pinctrl2 = &pinctrl_2;
> };
>
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0x900>;
> + };
Please match the unit-address with the reg (e.g. this should be
cpu@900).
Please do this for all the other CPU nodes.
Thanks,
Mark.
> +
> + cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0x901>;
> + };
> + };
> +
> sysram@...20000 {
> compatible = "mmio-sram";
> reg = <0x02020000 0x20000>;
> diff --git a/arch/arm/boot/dts/exynos4212.dtsi b/arch/arm/boot/dts/exynos4212.dtsi
> index 3c00e6e..484a2da 100644
> --- a/arch/arm/boot/dts/exynos4212.dtsi
> +++ b/arch/arm/boot/dts/exynos4212.dtsi
> @@ -22,6 +22,23 @@
> / {
> compatible = "samsung,exynos4212", "samsung,exynos4";
>
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0xA00>;
> + };
> +
> + cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0xA01>;
> + };
> + };
> +
> combiner: interrupt-controller@...40000 {
> samsung,combiner-nr = <18>;
> };
> diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi
> index c42a3e1..89f4743 100644
> --- a/arch/arm/boot/dts/exynos4412.dtsi
> +++ b/arch/arm/boot/dts/exynos4412.dtsi
> @@ -22,6 +22,35 @@
> / {
> compatible = "samsung,exynos4412", "samsung,exynos4";
>
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0xA00>;
> + };
> +
> + cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0xA01>;
> + };
> +
> + cpu@2 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0xA02>;
> + };
> +
> + cpu@3 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a9";
> + reg = <0xA03>;
> + };
> + };
> +
> combiner: interrupt-controller@...40000 {
> samsung,combiner-nr = <20>;
> };
> --
> 1.8.2.3
>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
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