From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: [PATCH 1/4] dt-bindings: reserved-memory: Introduce memory-region{s,-names} Date: Fri, 3 Apr 2020 20:56:37 +0200 Message-ID: <20200403185640.118569-2-thierry.reding@gmail.com> References: <20200403185640.118569-1-thierry.reding@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20200403185640.118569-1-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Rob Herring , Frank Rowand Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-tegra@vger.kernel.org From: Thierry Reding In order to make the reserved-memory bindings more consistent with other existing bindings, add a memory-region-names property that contains an array of strings that name the entries of the memory-region property and allows these regions to be looked up by name. Also add the memory-regions property as an alias for the existing memory-region property. This is again for consistency with other similar bindings and makes it clearer that this property can take multiple pairs. Signed-off-by: Thierry Reding --- .../bindings/reserved-memory/reserved-memory.txt | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt b/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt index bac4afa3b197..823e619cfca3 100644 --- a/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt +++ b/Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt @@ -76,7 +76,11 @@ Device node references to reserved memory Regions in the /reserved-memory node may be referenced by other device nodes by adding a memory-region property to the device node. -memory-region (optional) - phandle, specifier pairs to children of /reserved-memory +memory-regions (optional) - phandle, specifier pairs to children of /reserved-memory +memory-region-names (optional) - a list of names, one for each corresponding + entry in the memory-regions property + +memory-region (optional) - alias for memory-regions Example ------- @@ -120,17 +124,17 @@ one for multimedia processing (named multimedia-memory@77000000, 64MiB). /* ... */ fb0: video@12300000 { - memory-region = <&display_reserved>; + memory-regions = <&display_reserved>; /* ... */ }; scaler: scaler@12500000 { - memory-region = <&multimedia_reserved>; + memory-regions = <&multimedia_reserved>; /* ... */ }; codec: codec@12600000 { - memory-region = <&multimedia_reserved>; + memory-regions = <&multimedia_reserved>; /* ... */ }; }; -- 2.24.1