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| Started by | Yingjoe Chen <yingjoe.chen@mediatek.com> |
|---|---|
| First post | 2015-06-29 05:10 +0200 |
| Last post | 2015-06-29 05:10 +0200 |
| Articles | 1 — 1 participant |
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Re: [RESEND PATCH 1/6] Document: bindings: DT: Add SMP enable method for MT6580 SoC platform Yingjoe Chen <yingjoe.chen@mediatek.com> - 2015-06-29 05:10 +0200
| From | Yingjoe Chen <yingjoe.chen@mediatek.com> |
|---|---|
| Date | 2015-06-29 05:10 +0200 |
| Subject | Re: [RESEND PATCH 1/6] Document: bindings: DT: Add SMP enable method for MT6580 SoC platform |
| Message-ID | <pGxCi-7nd-3@gated-at.bofh.it> |
On Fri, 2015-06-19 at 02:01 +0800, Scott Shu wrote: > For MT6580 SoC platform, the secondary cores are in powered off state > as default, so compared with MT65xx series SoC, one new enable method > is needed. This method using the SPM (System Power Manager) inside > the SCYSYS to control the CPU power. > --- > Documentation/devicetree/bindings/arm/cpus.txt | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt > index ac2903d..fb80b2e 100644 > --- a/Documentation/devicetree/bindings/arm/cpus.txt > +++ b/Documentation/devicetree/bindings/arm/cpus.txt > @@ -194,6 +194,7 @@ nodes to be present and contain the properties described below. > "marvell,armada-380-smp" > "marvell,armada-390-smp" > "marvell,armada-xp-smp" > + "mediatek,mt6580-smp" > "mediatek,mt65xx-smp" > "mediatek,mt81xx-tz-smp" > "qcom,gcc-msm8660" Hi It seems we have 3 different kinds of cpu enable method now, and mt65xx-smp doesn't cover all mt65xx series. So maybe it make sense to change naming before it got merged. Short summary for these methods: mt65xx-smp: For mt65xx socs which wakeup all cores at boot. Tested on mt6589 by Matthias. mt6580-smp: Only first core is alive at boot, so need to wakeup other cores using SPM. AFAIK only for mt6580 now. mt81xx-tz-smp: For soc which wakeup all cores at boot, and have trustzone firmware. Suitable for mt8127, mt8135. I'm not sure about smp for mt6592, maybe Howard or Scott can comment on it. Any suggestion on how we should organize these methods? Joe.C -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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