Thread (20 messages) flat view 20 messages, 6 authors, 2026-07-31

Re: [PATCH v2 1/4] dt-bindings: remoteproc: imx_rproc: document optional "memory-region-names"

From: Frank Li <hidden>
Date: 2026-06-11 14:24:22
Also in: imx, linux-devicetree, linux-remoteproc, lkml

On Thu, Jun 11, 2026 at 03:47:00PM +0200, Krzysztof Kozlowski wrote:
On 10/06/2026 16:29, Frank Li wrote:
quoted
For example:

rsc_table: rsc-table@90000000
{	ret  = <0x90000000>;
	no-map;
}

m4 {
	...
	memory-region = <&rsc_table>;
}

If you change node name "rsc-table" to "memory", driver will failure
because it parse node name "rsc-table", which phandle point to. but no
binding to restrict node name to "rsc-table". So rsc-table became hidden
ABI.
Then you need to fix the driver to not parse the node names. Node names
are not supposed to be ABI.
Yes, that is this patch set's purpose. Just need below steps to do smooth
migration.
1. allow memory-region-name as options for binding
2. update driver to parse memory-region-names
3. update all dts to add memory-region-names
4. remove old Node name code and change binding to force memory-region-names

Frank
Best regards,
Krzysztof
  
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