From: Joel Stanley <joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org>
To: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Christopher Bostic
<cbostic-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Jeremy Kerr <jk-mnsaURCQ41sdnm+yROfE0A@public.gmane.org>,
Eddie James
<eajames-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH 1/2] dt-bindings: fsi: Add optional property no-scan-on-init
Date: Tue, 30 Jan 2018 16:21:15 +1030 [thread overview]
Message-ID: <20180130055116.17411-2-joel@jms.id.au> (raw)
In-Reply-To: <20180130055116.17411-1-joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org>
From: Christopher Bostic <cbostic-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
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-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Acked-by: Jeremy Kerr <jk-mnsaURCQ41sdnm+yROfE0A@public.gmane.org>
Signed-off-by: Joel Stanley <joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org>
---
Documentation/devicetree/bindings/fsi/fsi.txt | 7 +++++++
1 file changed, 7 insertions(+)
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
----------
--
2.15.1
--
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next prev parent reply other threads:[~2018-01-30 5:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-30 5:51 [PATCH 0/2] fsi: add property to avoid scanning at boot Joel Stanley
[not found] ` <20180130055116.17411-1-joel-U3u1mxZcP9KHXe+LvDLADg@public.gmane.org>
2018-01-30 5:51 ` Joel Stanley [this message]
2018-02-05 6:07 ` [PATCH 1/2] dt-bindings: fsi: Add optional property no-scan-on-init Rob Herring
2018-02-05 6:08 ` Joel Stanley
2018-01-30 5:51 ` [PATCH 2/2] fsi: core: Add check for master " Joel Stanley
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