[PATCH v2 1/2] ARM: i.MX8MP: skov: add fallback for unsupported HW

[Oleksij Rempel]

Add fallback support for currently not supported HW. Instead of
completely fail, it is better to use some kind of basic devicetree with
reduced functionality.

Signed-off-by: Oleksij Rempel <o.rem...@pengutronix.de>
---
 arch/arm/boards/skov-imx8mp/board.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boards/skov-imx8mp/board.c 
b/arch/arm/boards/skov-imx8mp/board.c
index 3b6eb7b080..41122ea1e4 100644
--- a/arch/arm/boards/skov-imx8mp/board.c
+++ b/arch/arm/boards/skov-imx8mp/board.c
@@ -85,6 +85,10 @@ static const struct board_description imx8mp_variants[] = {
        },
 };
 
+static const struct board_description imx8mp_basic_viariant = {
+       .dts_compatible = "skov,imx8mp-skov-basic",
+};
+
 static int skov_imx8mp_fixup(struct device_node *root, void *data)
 {
        struct device_node *chosen = of_create_node(root, "/chosen");
@@ -171,12 +175,12 @@ static int skov_imx8mp_init_variant(struct 
skov_imx8mp_priv *priv)
        priv->variant_id = v;
 
        if (v >= ARRAY_SIZE(imx8mp_variants)) {
-               dev_err(dev, "Invalid variant %u\n", v);
-               return -EINVAL;
+               dev_warn(dev, "Unsuported variant %u. Fall back to basic 
variant\n", v);
+               variant = &imx8mp_basic_viariant;
+       } else {
+               variant = &imx8mp_variants[v];
        }
 
-       variant = &imx8mp_variants[v];
-
        if (variant->flags & SKOV_IMX8MP_HAS_HDMI) {
                ret = skov_imx8mp_get_hdmi(dev);
                if (ret < 0)
-- 
2.39.2