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From: Vitor Soares <Vitor.Soares@synopsys.com>
To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-i3c@lists.infradead.org
Cc: mark.rutland@arm.com, Joao.Pinto@synopsys.com,
	bbrezillon@kernel.org, Vitor Soares <Vitor.Soares@synopsys.com>,
	pgaj@cadence.com, robh+dt@kernel.org
Subject: [PATCH v2 3/5] dt-bindings: i3c: Make 'assigned-address' valid if static address == 0
Date: Tue,  3 Sep 2019 12:35:52 +0200
Message-ID: <c0505ef73add4512ce1ee2a71b1c8bc8f771151b.1567437955.git.vitor.soares@synopsys.com> (raw)
In-Reply-To: <cover.1567437955.git.vitor.soares@synopsys.com>

The I3C devices without a static address can require a specific dynamic
address for priority reasons.

Let's update the binding document to make the 'assigned-address' property
valid if static address == 0 and add an example with this use case.

Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
---
 Documentation/devicetree/bindings/i3c/i3c.txt | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/i3c/i3c.txt b/Documentation/devicetree/bindings/i3c/i3c.txt
index ab729a0..c851e75 100644
--- a/Documentation/devicetree/bindings/i3c/i3c.txt
+++ b/Documentation/devicetree/bindings/i3c/i3c.txt
@@ -98,9 +98,7 @@ Required properties
 
 Optional properties
 -------------------
-- assigned-address: dynamic address to be assigned to this device. This
-		    property is only valid if the I3C device has a static
-		    address (first cell of the reg property != 0).
+- assigned-address: dynamic address to be assigned to this device.
 
 
 Example:
@@ -129,6 +127,15 @@ Example:
 
 		/*
 		 * I3C device without a static I2C address but requiring
+		 * specific dynamic address.
+		 */
+		sensor@0,39200154004 {
+			reg = <0x0 0x6072 0x303904d2>;
+			assigned-address = <0xb>;
+		};
+
+		/*
+		 * I3C device without a static I2C address but requiring
 		 * resources described in the DT.
 		 */
 		sensor@0,39200154004 {
-- 
2.7.4


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  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-03 10:35 [PATCH v2 0/5] i3c: remove device if failed on pre_assign_dyn_addr() Vitor Soares
2019-09-03 10:35 ` [PATCH v2 1/5] i3c: master: detach and free device if pre_assign_dyn_addr() fails Vitor Soares
2019-09-03 10:52   ` Boris Brezillon
2019-09-03 11:10     ` Vitor Soares
2019-09-03 11:13   ` Przemyslaw Gaj
2019-09-03 11:57     ` Vitor Soares
2019-09-04  4:47       ` Przemyslaw Gaj
2019-09-04  9:06         ` Vitor Soares
2019-09-03 10:35 ` [PATCH v2 2/5] i3c: master: make sure ->boardinfo is initialized in add_i3c_dev_locked() Vitor Soares
2019-09-03 10:35 ` Vitor Soares [this message]
2019-09-03 17:40   ` [PATCH v2 3/5] dt-bindings: i3c: Make 'assigned-address' valid if static address == 0 Rob Herring
2019-09-03 10:35 ` [PATCH v2 4/5] dt-bindings: i3c: add a note for no guarantee of 'assigned-address' use Vitor Soares
2019-09-03 17:41   ` Rob Herring
2019-09-03 10:35 ` [PATCH v2 5/5] i3c: master: dw: reattach device on first available location of address table Vitor Soares

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