build/patch/kernel/archive/sunxi-6.2/patches.megous/of-property-fw_devlink-Support-allwinner-sram-links.patch

60 lines
1.7 KiB
Diff

From fae1a0059ad821a938cac72d8dada817ea247667 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Jirman?= <megi@xff.cz>
Date: Sat, 15 May 2021 21:43:44 +0200
Subject: [PATCH 181/391] of: property: fw_devlink: Support allwinner,sram
links
allwinner,sram property points to a node representing section of SRAM,
which is implemented by its ancestor (syscon), so we link to the
parent of parent of the actual SRAM section node that the link points
to.
Signed-off-by: Ondrej Jirman <megi@xff.cz>
---
drivers/of/property.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/of/property.c b/drivers/of/property.c
index 134cfc980..111189507 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -1383,6 +1383,27 @@ static struct device_node *parse_interrupts(struct device_node *np,
return of_irq_parse_one(np, index, &sup_args) ? NULL : sup_args.np;
}
+static struct device_node *parse_allwinner_sram(struct device_node *np,
+ const char *prop_name, int index)
+{
+ struct device_node *sram_node;
+
+ if (!IS_ENABLED(CONFIG_SUNXI_SRAM))
+ return NULL;
+
+ if (strcmp(prop_name, "allwinner,sram"))
+ return NULL;
+
+ if (index > 0)
+ return NULL;
+
+ sram_node = of_parse_phandle(np, prop_name, 0);
+ sram_node = of_get_parent(sram_node);
+ sram_node = of_get_parent(sram_node);
+
+ return sram_node;
+}
+
static const struct supplier_bindings of_supplier_bindings[] = {
{ .parse_prop = parse_clocks, },
{ .parse_prop = parse_interconnects, },
@@ -1417,6 +1438,7 @@ static const struct supplier_bindings of_supplier_bindings[] = {
{ .parse_prop = parse_regulators, },
{ .parse_prop = parse_gpio, },
{ .parse_prop = parse_gpios, },
+ { .parse_prop = parse_allwinner_sram, },
{}
};
--
2.35.3