diff mbox series

[09/10] dt-bindings: fsi: Add optional property no-scan-on-init

Message ID 20180212051549.8575-10-joel@jms.id.au
State New
Headers show
Series FSI enhancements for v4.17 | expand

Commit Message

Joel Stanley Feb. 12, 2018, 5:15 a.m. UTC 
From: Christopher Bostic <cbostic@linux.vnet.ibm.com>


Add an optional FSI master property 'no-scan-on-init.  This
can be specified to indicate that a master should not be
automatically scanned at init time.  This is required in cases
where a scan could interfere with another FSI master on the same
bus.

Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>

Acked-by: Jeremy Kerr <jk@ozlabs.org>

Signed-off-by: Joel Stanley <joel@jms.id.au>

---
 Documentation/devicetree/bindings/fsi/fsi.txt | 7 +++++++
 1 file changed, 7 insertions(+)

-- 
2.15.1

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

Comments

Rob Herring (Arm) Feb. 12, 2018, 2:36 p.m. UTC | #1 
On Mon, Feb 12, 2018 at 03:45:48PM +1030, Joel Stanley wrote:
> From: Christopher Bostic <cbostic@linux.vnet.ibm.com>

> 

> Add an optional FSI master property 'no-scan-on-init.  This

> can be specified to indicate that a master should not be

> automatically scanned at init time.  This is required in cases

> where a scan could interfere with another FSI master on the same

> bus.

> 

> Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>

> Acked-by: Jeremy Kerr <jk@ozlabs.org>

> Signed-off-by: Joel Stanley <joel@jms.id.au>

> ---

>  Documentation/devicetree/bindings/fsi/fsi.txt | 7 +++++++

>  1 file changed, 7 insertions(+)


Please add acks/reviews when posting new versions.

Rob
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Joel Stanley Feb. 13, 2018, 2:49 a.m. UTC | #2 
On Tue, Feb 13, 2018 at 1:06 AM, Rob Herring <robh@kernel.org> wrote:
> On Mon, Feb 12, 2018 at 03:45:48PM +1030, Joel Stanley wrote:

>> From: Christopher Bostic <cbostic@linux.vnet.ibm.com>

>>

>> Add an optional FSI master property 'no-scan-on-init.  This

>> can be specified to indicate that a master should not be

>> automatically scanned at init time.  This is required in cases

>> where a scan could interfere with another FSI master on the same

>> bus.

>>

>> Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>

>> Acked-by: Jeremy Kerr <jk@ozlabs.org>

>> Signed-off-by: Joel Stanley <joel@jms.id.au>

>> ---

>>  Documentation/devicetree/bindings/fsi/fsi.txt | 7 +++++++

>>  1 file changed, 7 insertions(+)

>

> Please add acks/reviews when posting new versions.


Sorry Rob, I forgot about your ack. Thanks for reminding me.

Cheers,

Joel
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/fsi/fsi.txt b/Documentation/devicetree/bindings/fsi/fsi.txt
index 4eaf488d4015..ab516c673a4b 100644
--- a/Documentation/devicetree/bindings/fsi/fsi.txt
+++ b/Documentation/devicetree/bindings/fsi/fsi.txt
@@ -56,6 +56,13 @@  addresses (link index and slave ID), and no size:
     #address-cells = <2>;
     #size-cells = <0>;
 
+An optional boolean property can be added to indicate that a particular master
+should not scan for connected devices at initialization time.  This is
+necessary in cases where a scan could cause arbitration issues with other
+masters that may be present on the bus.
+
+    no-scan-on-init;
+
 FSI slaves
 ----------