Messages in this thread | | | Date | Thu, 31 Mar 2016 13:34:07 -0400 | From | Tejun Heo <> | Subject | Re: [PATCH v2 2/3] ata: ahci-platform: Add ports-implemented DT bindings. |
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On Thu, Mar 31, 2016 at 06:31:39PM +0100, Srinivas Kandagatla wrote: > On some SOCs PORTS_IMPL register value is never programmed by the > firmware and left at zero value. Which means that no sata ports are > available for software. AHCI driver used to cope up with this by > fabricating the port_map if the PORTS_IMPL register is read zero, > but recent patch broke this workaround as zero value was valid for > NVMe disks. > > This patch adds ports-implemented DT bindings as workaround for this issue > in a way that DT can can override the PORTS_IMPL register in cases where > the firmware did not program it already. > > Fixes: 566d1827df2e ("libata: disable forced PORTS_IMPL for >= AHCI 1.3) > Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
For 1 and 2,
Acked-by: Tejun Heo <tj@kernel.org>
I can route all three through libata/for-4.6-fixes once the platform side is acked. If it's better to route these through the platform tree, please feel free to do so.
Thanks.
-- tejun
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