diff options
| author | Marek Vasut <[email protected]> | 2026-01-03 01:17:31 +0100 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2026-01-13 09:42:44 -0600 |
| commit | 6014f87b03d2c54e34aa574dcec375804c030860 (patch) | |
| tree | 49c39edf5f145291114342cc5560a802243e06c4 /drivers | |
| parent | 0b97991fa0e706ca4d9ba274ba9d06f43e4ee9ad (diff) | |
misc: Add fixed-layout support
The "fixed-layout" nvmem controller subnode used to be optional wrapper
around nvmem controller cells subnodes. The "fixed-layout" node is now
mandatory in most cases, but in order to support both recent and legacy
DTs, both variants have to be supported.
Implement support for the "fixed-layout" node in the most trivial manner,
check whether the nvmem cell supernode is compatible with "fixed-layout"
and if it is, proceed one level above it to find the nvmem controller.
Signed-off-by: Marek Vasut <[email protected]>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/nvmem.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/misc/nvmem.c b/drivers/misc/nvmem.c index d0cb0a35b81..33e80858565 100644 --- a/drivers/misc/nvmem.c +++ b/drivers/misc/nvmem.c @@ -102,6 +102,7 @@ int nvmem_cell_get_by_index(struct udevice *dev, int index, fdt_size_t size = FDT_SIZE_T_NONE; int ret; struct ofnode_phandle_args args; + ofnode par; dev_dbg(dev, "%s: index=%d\n", __func__, index); @@ -110,7 +111,11 @@ int nvmem_cell_get_by_index(struct udevice *dev, int index, if (ret) return ret; - ret = nvmem_get_device(ofnode_get_parent(args.node), cell); + par = ofnode_get_parent(args.node); + if (ofnode_device_is_compatible(par, "fixed-layout")) + par = ofnode_get_parent(par); + + ret = nvmem_get_device(par, cell); if (ret) return ret; |