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Groups > linux.kernel > #1200590 > unrolled thread
| Started by | Russell King - ARM Linux <linux@arm.linux.org.uk> |
|---|---|
| First post | 2015-08-05 11:50 +0200 |
| Last post | 2015-08-07 04:30 +0200 |
| Articles | 2 — 2 participants |
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Re: [PATCH v3 5/8] ARM: mediatek: add smp bringup code for MT6580 Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-05 11:50 +0200
Re: [PATCH v3 5/8] ARM: mediatek: add smp bringup code for MT6580 Scott Shu <scott.shu@mediatek.com> - 2015-08-07 04:30 +0200
| From | Russell King - ARM Linux <linux@arm.linux.org.uk> |
|---|---|
| Date | 2015-08-05 11:50 +0200 |
| Subject | Re: [PATCH v3 5/8] ARM: mediatek: add smp bringup code for MT6580 |
| Message-ID | <pU3uH-5UC-13@gated-at.bofh.it> |
On Tue, Aug 04, 2015 at 09:54:21PM +0800, Scott Shu wrote: > Add support for cpu enable-method "mediatek,mt6580-smp" for booting > secondary CPUs on MT6580. If you have CPU power domain support, and you power up and power down the CPUs, why do you need the boot_lock and pen_release stuff? Isn't keeping the power off on a CPU sufficient to prevent it entering the kernel? -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net. -- 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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| From | Scott Shu <scott.shu@mediatek.com> |
|---|---|
| Date | 2015-08-07 04:30 +0200 |
| Message-ID | <pUFzX-2y2-9@gated-at.bofh.it> |
| In reply to | #1200590 |
On Wed, 2015-08-05 at 10:44 +0100, Russell King - ARM Linux wrote: > On Tue, Aug 04, 2015 at 09:54:21PM +0800, Scott Shu wrote: > > Add support for cpu enable-method "mediatek,mt6580-smp" for booting > > secondary CPUs on MT6580. > > If you have CPU power domain support, and you power up and power down the > CPUs, why do you need the boot_lock and pen_release stuff? Isn't keeping > the power off on a CPU sufficient to prevent it entering the kernel? > Thanks Russell. Yes, the system works well after removing boot_lock and pen_release. Will be fixed in next version. Scott -- 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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