openwrt/target/linux/generic/backport-5.15/805-v5.19-0005-nvmem-brcm_nvram-find-Device-Tree-nodes-for-NVMEM-ce.patch

From 207775f7e17b8fd0426a2ac4a5b81e4e1d71849e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <[email protected]>
Date: Fri, 29 Apr 2022 17:26:47 +0100
Subject: [PATCH] nvmem: brcm_nvram: find Device Tree nodes for NVMEM cells
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DT binding for Broadcom's NVRAM supports specifying NVMEM cells as NVMEM
device (provider) subnodes. Look for such subnodes when collecing NVMEM
cells. This allows NVMEM consumers to use NVRAM variables.

Signed-off-by: Rafał Miłecki <[email protected]>
Signed-off-by: Srinivas Kandagatla <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 drivers/nvmem/brcm_nvram.c | 2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/nvmem/brcm_nvram.c
+++ b/drivers/nvmem/brcm_nvram.c
@@ -8,6 +8,7 @@
 #include <linux/module.h>
 #include <linux/nvmem-consumer.h>
 #include <linux/nvmem-provider.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
@@ -72,6 +73,7 @@ static int brcm_nvram_add_cells(struct b
 			return -ENOMEM;
 		priv->cells[idx].offset = value - (char *)data;
 		priv->cells[idx].bytes = strlen(value);
+		priv->cells[idx].np = of_get_child_by_name(dev->of_node, priv->cells[idx].name);
 	}
 
 	return 0;