[PATCH u-boot-mvebu v3 07/18] arm: mvebu: turris_omnia: Disable Atmel SHA node if not present

Marek Behún
2024-03-27T16:25:22Z

If the FEAT_CRYPTO feature bit is present in MCU features, the board
crypto is implemented by MCU and the Atmel SHA chip is not present.
Disable Atmel SHA device-tree node in that case.

Signed-off-by: Marek Behún <kabel@kernel.org>
---
board/CZ.NIC/turris_omnia/turris_omnia.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/board/CZ.NIC/turris_omnia/turris_omnia.c b/board/CZ.NIC/turris_omnia/turris_omnia.c
index b2f0088e5e..3b7a71bdad 100644
--- a/board/CZ.NIC/turris_omnia/turris_omnia.c
+++ b/board/CZ.NIC/turris_omnia/turris_omnia.c
@@ -1007,6 +1007,25 @@ static int fixup_mcu_gpio_in_eth_wan_node(void *blob)
return 0;
}

+static void fixup_atsha_node(void *blob)
+{
+ int node;
+
+ if (!omnia_mcu_has_feature(FEAT_CRYPTO))
+ return;
+
+ node = fdt_node_offset_by_compatible(blob, -1, "atmel,atsha204a");
+ if (node < 0) {
+ printf("Cannot find ATSHA204A node!\n");
+ return;
+ }
+
+ if (fdt_status_disabled(blob, node) < 0)
+ printf("Cannot disable ATSHA204A node!\n");
+ else
+ debug("Disabled ATSHA204A node\n");
+}
+
#endif

#if IS_ENABLED(CONFIG_OF_BOARD_FIXUP)
@@ -1020,6 +1039,8 @@ int board_fix_fdt(void *blob)
fixup_msata_port_nodes(blob);
fixup_wwan_port_nodes(blob);

+ fixup_atsha_node(blob);
+
return 0;
}
#endif
@@ -1211,6 +1232,8 @@ int ft_board_setup(void *blob, struct bd_info *bd)
fixup_msata_port_nodes(blob);
fixup_wwan_port_nodes(blob);

+ fixup_atsha_node(blob);
+
return 0;
}
#endif
--
2.43.2